[程序员] 发现 kiro 的 Token 很耐用
低强度使用了一个月 kiro 免费赠送套餐, 500 个积分,还有两天过期,发现还有 200 多积分没有用完
感觉 kiro 的积分很耐用啊
https://imgur.com/a/R2QfPx9
低强度使用了一个月 kiro 免费赠送套餐, 500 个积分,还有两天过期,发现还有 200 多积分没有用完
感觉 kiro 的积分很耐用啊
https://imgur.com/a/R2QfPx9
[分享发现] 商汤 + NTU 做了个不用 Vision Encoder 也不用 VAE 的多模态模型，结果还挺能打
博客： https://huggingface.co/blog/sensenova/neo-unify 叫 NEO-unify ，主要卖点是把多模态里最"理所当然"的两个组件都扔掉了： 1.不用 Vision Encoder （ CLIP/SigLIP 之类的） 2.不用 VAE
直接从原始像素出发，理解和生成两条路径都塞在一个叫 MoT （ Mixture-of-Transformer ）的骨干里。文本用自回归交叉熵，图像生成用 pixel flow matching ，统一训练。 比较有意思的几个地方：
● 图像重建质量上，2B 的模型在 MS COCO 上跑出来 PSNR 31.56 / SSIM 0.85 ，Flux 的 VAE 是 32.65 / 0.91 ，差距没想象中大，而且这是在 90K pretraining step 之后的成绩
● 把理解分支完全冻住，只训练生成分支，图像编辑居然还能用，ImgEdit 得分 3.32
● 声称比 Bagel 数据利用率高——同样的 benchmark ，用更少的 token 训出来更高的性能
模型还没开源，团队在 HF 评论区说正在准备，tech report 也在路上。 感觉这个思路（彻底去掉预训练编码器，让模型自己从像素里学表示）如果真能 scale 起来是挺有意思的，现在的多模态基本都依赖 CLIP 系的先验，这条路如果走通了架构会干净不少。 有没有做过类似 UMM 工作的 v 友，这种方向实际上训起来坑多吗？
拿到了他们的 discord server 邀请码： https://discord.gg/vh5SE45D8b
博客： https://huggingface.co/blog/sensenova/neo-unify 叫 NEO-unify ，主要卖点是把多模态里最"理所当然"的两个组件都扔掉了： 1.不用 Vision Encoder （ CLIP/SigLIP 之类的） 2.不用 VAE
直接从原始像素出发，理解和生成两条路径都塞在一个叫 MoT （ Mixture-of-Transformer ）的骨干里。文本用自回归交叉熵，图像生成用 pixel flow matching ，统一训练。 比较有意思的几个地方：
● 图像重建质量上，2B 的模型在 MS COCO 上跑出来 PSNR 31.56 / SSIM 0.85 ，Flux 的 VAE 是 32.65 / 0.91 ，差距没想象中大，而且这是在 90K pretraining step 之后的成绩
● 把理解分支完全冻住，只训练生成分支，图像编辑居然还能用，ImgEdit 得分 3.32
● 声称比 Bagel 数据利用率高——同样的 benchmark ，用更少的 token 训出来更高的性能
模型还没开源，团队在 HF 评论区说正在准备，tech report 也在路上。 感觉这个思路（彻底去掉预训练编码器，让模型自己从像素里学表示）如果真能 scale 起来是挺有意思的，现在的多模态基本都依赖 CLIP 系的先验，这条路如果走通了架构会干净不少。 有没有做过类似 UMM 工作的 v 友，这种方向实际上训起来坑多吗？
拿到了他们的 discord server 邀请码： https://discord.gg/vh5SE45D8b
[推广] Claude API 企业级中转服务 数万+用户的信赖~稳定运营
aicoding.sh 是我们团队运营的 Claude API 企业级中转服务，目前服务用户数万+，企业客户超过 100 家。
服务的核心价值在于解决国内开发者和企业使用 Claude 的实际障碍。技术层面，我们提供国内直连节点，保障企业级网络稳定性。对于使用 Claude Code
的团队，我们提供标准化接入流程和完整的技术支持文档。
价格体系完全透明，按官方价格的 0.19 折到 0.49
折计费，按量消耗，所有用量数据可实时查询。支持国内支付体系，企业客户可以对公转账，符合财务合规要求。
我们理解企业选择第三方服务时对稳定性和持续性的顾虑。服务已稳定运营超过一年，技术架构经过多次迭代优化，有完整的监控和应急响应机制。
新用户加入社群可获得 10 美元测试额度，建议先体验服务质量再决定是否长期使用。
https://aicoding.sh
aicoding.sh 是我们团队运营的 Claude API 企业级中转服务，目前服务用户数万+，企业客户超过 100 家。
服务的核心价值在于解决国内开发者和企业使用 Claude 的实际障碍。技术层面，我们提供国内直连节点，保障企业级网络稳定性。对于使用 Claude Code
的团队，我们提供标准化接入流程和完整的技术支持文档。
价格体系完全透明，按官方价格的 0.19 折到 0.49
折计费，按量消耗，所有用量数据可实时查询。支持国内支付体系，企业客户可以对公转账，符合财务合规要求。
我们理解企业选择第三方服务时对稳定性和持续性的顾虑。服务已稳定运营超过一年，技术架构经过多次迭代优化，有完整的监控和应急响应机制。
新用户加入社群可获得 10 美元测试额度，建议先体验服务质量再决定是否长期使用。
https://aicoding.sh
[问与答] 你们相信 1969 年美国 nasa 登月了吗？
最近美国绕月（中国专家说的是掠月）， 太震撼了。
迄今为止做到了把人类送到离地球最远的地方。
---
希望中国可以一起进步，而不是遥遥领先。禁止相关内容的查看。
最近美国绕月（中国专家说的是掠月）， 太震撼了。
迄今为止做到了把人类送到离地球最远的地方。
---
希望中国可以一起进步，而不是遥遥领先。禁止相关内容的查看。
[问与答] chatgpt、claude 都无法访问， X、google、facebook 访问正常，啥原因啊？
全局代理开启，X 、googlefacebook 正常访问， chatgpt 、claude 都无法访问
全局代理开启，X 、googlefacebook 正常访问， chatgpt 、claude 都无法访问
[酷工作] 高级数据挖掘工程师 上海宜山路
时空数据挖掘：负责⼤规模 GPS 轨迹数据的深加⼯。利⽤ Uber H3 / Geohash 等空间索引 算法，进⾏职住识别、商圈热度分析、⼈群轨迹相似度计算。
训练语料构建 (Corpus)：负责将⾮结构化的⾏为⽇志转化为 ⼤模型可理解的⾃然语⾔⽂ 本。例如：将数据库中的标签转化为⾃然语⾔描述，供 AI 团队进⾏预训练使⽤。
⽤户画像构建：基于 App 安装列表和地理位置特征，构建多维度的⽤户标签体系（ Tagging System ），如“加密货币重度⽤户”、“⾼频商旅⼈⼠”等。
数据资产化：配合架构师，将挖掘出的中间结果沉淀为标准化的数据资产表（ Data Mart ）。Ym9iY3J0Z3ZzQGdtYWlsLmNvbQ==
时空数据挖掘：负责⼤规模 GPS 轨迹数据的深加⼯。利⽤ Uber H3 / Geohash 等空间索引 算法，进⾏职住识别、商圈热度分析、⼈群轨迹相似度计算。
训练语料构建 (Corpus)：负责将⾮结构化的⾏为⽇志转化为 ⼤模型可理解的⾃然语⾔⽂ 本。例如：将数据库中的标签转化为⾃然语⾔描述，供 AI 团队进⾏预训练使⽤。
⽤户画像构建：基于 App 安装列表和地理位置特征，构建多维度的⽤户标签体系（ Tagging System ），如“加密货币重度⽤户”、“⾼频商旅⼈⼠”等。
数据资产化：配合架构师，将挖掘出的中间结果沉淀为标准化的数据资产表（ Data Mart ）。Ym9iY3J0Z3ZzQGdtYWlsLmNvbQ==
[摄影] 分享几张周末出门爬山拍的
这次爬的是位于山梨县大菩萨岭，日本百名山之一，最高海拔 2,057m 从东京出发乘坐公共交通，勉强能做到当日往返，就是早上得 4 点就起床😂 几天前就知道会是个大晴天了，所以有点兴奋没咋睡着 但其实好像实际上还是有点云的，不是完全的蓝天，最后实际拍出来的效果 DSC09552.JPG DSC09746.JPG DSC09738.JPG DSC09741.jpg
应该是正午光线的原因，感觉整体拍出来偏灰，不是那种通透的蓝色，肉眼也是偏灰的 然后为啥名字带了个岭字，确实是中间有一个纵走的山脊，一边能看到富士山，另一边能俯瞰甲府盆地，远眺南阿尔卑斯山脉。
这次爬的是位于山梨县大菩萨岭，日本百名山之一，最高海拔 2,057m 从东京出发乘坐公共交通，勉强能做到当日往返，就是早上得 4 点就起床😂 几天前就知道会是个大晴天了，所以有点兴奋没咋睡着 但其实好像实际上还是有点云的，不是完全的蓝天，最后实际拍出来的效果 DSC09552.JPG DSC09746.JPG DSC09738.JPG DSC09741.jpg
应该是正午光线的原因，感觉整体拍出来偏灰，不是那种通透的蓝色，肉眼也是偏灰的 然后为啥名字带了个岭字，确实是中间有一个纵走的山脊，一边能看到富士山，另一边能俯瞰甲府盆地，远眺南阿尔卑斯山脉。
[VPS] DigVPS 测评 - 新增商户 CloudLeadInno 并奉上香港 CN2 产品详评数据：三网优化、无限流量、新品八折出售中。
规格：
摘要：
硬件：
速率：
IPv4 质量：
ICMP 延迟：
TCP 延迟：
BGP IPv4：
规格：
摘要：
硬件：
速率：
IPv4 质量：
ICMP 延迟：
TCP 延迟：
BGP IPv4：
如对该产品感兴趣，想要持续关注其实时与历史数据表现，欢迎访问我们的站点进行长期跟踪。也可以加入微信群一起讨论。
[分享创造] 当我把实体商品和 prompt 结合在一起，欢迎体验（抽定制实木相框摆台）
起因：因为老婆是个粉丝头子，手下有很多人喜欢做周边收藏，有次向我提需求（她是个产品）说能不能帮他定制卡通版明星的衣服，研究了一番决定做一个可以在线定制实物的网站，通过 prompt 生图的方式下单不同商品
优势：个人认为市面上 AI 生图站点老多，但往往都停留在想到一个好看的场景，把他给画出来--ending ，可玩性没有这么高，但把自己的想法和现实生活中的商品融合在一起，当成你独一无二的孤版收藏品，那会是一件很 cool 的事情
细节：因为必须要保证实物产品的优质质量，所以我们和已经打样并质量通过的厂商联名合作，价格不会是淘宝拼多多那种很便宜的（希望理解），品类会渐进式推荐，第一批商品我们挑选了 T 恤衫（夏天快到了），手机壳、相框摆台、鼠标垫、帆布包、300 片拼图。
案例：纯棉 T 恤衫、我做的一个摆台产品（放在公司桌子上）
prompt: An abstract expressionist oil painting based on image_0.png depicting compassion. The background is a stormy abstract grey. In the center, a warm, glowing, distinct full-bodied abstract soul figure in orange and yellow impasto is holding a large, realistic black umbrella. Under the shelter of the umbrella, a small, wet, realistic stray cat is huddled against the soul's leg. Beautiful blue hydrangea flowers are blooming lushly within the dry, protected space under the umbrella. The contrast between the cold storm outside and the warm, floral sanctuary inside.
抽奖：从本帖发布起 24 小时内，在评论区留下注册后的加密邮箱的朋友中，随机抽中 1 位，送定制相框一份
最后：老师们有没有个人想做的定制产品，后面我打算开键帽品类 官方链接 https://aimake.catmom.top
起因：因为老婆是个粉丝头子，手下有很多人喜欢做周边收藏，有次向我提需求（她是个产品）说能不能帮他定制卡通版明星的衣服，研究了一番决定做一个可以在线定制实物的网站，通过 prompt 生图的方式下单不同商品
优势：个人认为市面上 AI 生图站点老多，但往往都停留在想到一个好看的场景，把他给画出来--ending ，可玩性没有这么高，但把自己的想法和现实生活中的商品融合在一起，当成你独一无二的孤版收藏品，那会是一件很 cool 的事情
细节：因为必须要保证实物产品的优质质量，所以我们和已经打样并质量通过的厂商联名合作，价格不会是淘宝拼多多那种很便宜的（希望理解），品类会渐进式推荐，第一批商品我们挑选了 T 恤衫（夏天快到了），手机壳、相框摆台、鼠标垫、帆布包、300 片拼图。
案例：纯棉 T 恤衫、我做的一个摆台产品（放在公司桌子上）
prompt: An abstract expressionist oil painting based on image_0.png depicting compassion. The background is a stormy abstract grey. In the center, a warm, glowing, distinct full-bodied abstract soul figure in orange and yellow impasto is holding a large, realistic black umbrella. Under the shelter of the umbrella, a small, wet, realistic stray cat is huddled against the soul's leg. Beautiful blue hydrangea flowers are blooming lushly within the dry, protected space under the umbrella. The contrast between the cold storm outside and the warm, floral sanctuary inside.
抽奖：从本帖发布起 24 小时内，在评论区留下注册后的加密邮箱的朋友中，随机抽中 1 位，送定制相框一份
抽奖方法，使用 v 友之前提供的 V2EX 等概率抽奖程序进行抽奖一名，基于截至晚六点总楼层数
最后：老师们有没有个人想做的定制产品，后面我打算开键帽品类 官方链接 https://aimake.catmom.top
[推广] Codex API 企业级中转服务 速度极快 稳定运营
1024token.one 是专注于 OpenAI Codex 企业级接入 的中转服务.
我们致力于解决国内团队在使用 Codex 过程中面临的接入门槛，包括网络访问不稳定、企业采购流程复杂、缺少接入支持等问题。
我们提供： • 国内直连接入，提升访问稳定性与可用性 • 标准化接入流程，降低团队落地成本 • 完善的技术文档与支持服务，方便快速集成 • 透明计费，按官方价格 0.029 ~ 0.04 按量结算 • 实时用量查询，成本清晰可控
新用户注册，输入优惠码 18E7A22A5B1C3F3A 即可领取 20 美元测试额度，欢迎先体验，再决定是否接入。
访问官网： https://1024token.one
1024token.one 是专注于 OpenAI Codex 企业级接入 的中转服务.
我们致力于解决国内团队在使用 Codex 过程中面临的接入门槛，包括网络访问不稳定、企业采购流程复杂、缺少接入支持等问题。
我们提供： • 国内直连接入，提升访问稳定性与可用性 • 标准化接入流程，降低团队落地成本 • 完善的技术文档与支持服务，方便快速集成 • 透明计费，按官方价格 0.029 ~ 0.04 按量结算 • 实时用量查询，成本清晰可控
新用户注册，输入优惠码 18E7A22A5B1C3F3A 即可领取 20 美元测试额度，欢迎先体验，再决定是否接入。
访问官网： https://1024token.one
[生活] 爱上合租妹子 4 - 我们只是朋友，请你把手放在安全区
工作日，西西下班比较迟，9 点，她一般都是睡在她公司宿舍，我们早上道别后就没有再见面，我有点后悔那时应该拍张照片的，甜蜜蜜的感觉，只能周五再见了吧。晚上我回到家，给她发信息，开始了一晚上的聊天之旅。聊完天，感觉，我们不算情侣了
工作日，西西下班比较迟，9 点，她一般都是睡在她公司宿舍，我们早上道别后就没有再见面，我有点后悔那时应该拍张照片的，甜蜜蜜的感觉，只能周五再见了吧。晚上我回到家，给她发信息，开始了一晚上的聊天之旅。聊完天，感觉，我们不算情侣了
[Planet] Planet 的这个日志弹窗是有错误了自动弹出来吗? 弹了几次了, 我还以为是系统的弹窗, 还在那纳闷, 仔细一看竟然是 Planet 的日志弹窗
感觉自动弹出有点不太合适, 哈哈哈哈, 最近半个月只碰到两次弹窗, 影响不大.
感觉自动弹出有点不太合适, 哈哈哈哈, 最近半个月只碰到两次弹窗, 影响不大.
[问与答] cc/codex 下多版本管理工具的问题
以前一直用 mise 来管理多版本开发环境。比如 node 之类的，进入对应项目目录会自动切换版本。
有一次在某个项目下没法启动 cc/codex ，发现是那个项目下的 node 版本太低了，后来看 cc 官方也推荐不再用 npm 来安装，就把这些工具全改成了 brew 安装，mcp 也尽量走 docker 或者 npx 。
最近 token 也不怎么够用，想从 chrome-dev-mcp 切换到 playwright-cli+skills ，发现 readme 只写了 npm -g 安装，这样的话就会装在全局默认的 node 下，是不是会导致切换到某个项目下 node 版本一变，就找不到 cli 了。似乎生态很多东西也还是在用 npm, 是不是也会有同样的问题？
以前一直用 mise 来管理多版本开发环境。比如 node 之类的，进入对应项目目录会自动切换版本。
有一次在某个项目下没法启动 cc/codex ，发现是那个项目下的 node 版本太低了，后来看 cc 官方也推荐不再用 npm 来安装，就把这些工具全改成了 brew 安装，mcp 也尽量走 docker 或者 npx 。
最近 token 也不怎么够用，想从 chrome-dev-mcp 切换到 playwright-cli+skills ，发现 readme 只写了 npm -g 安装，这样的话就会装在全局默认的 node 下，是不是会导致切换到某个项目下 node 版本一变，就找不到 cli 了。似乎生态很多东西也还是在用 npm, 是不是也会有同样的问题？
[分享发现] E220P-400T22S LoRa Module In-depth Analysis: Cost-effective Solution for Industrial Wireless Communication
Introduction
Against the backdrop of rapid growth in the global wireless communication module market, QYResearch shows that the global wireless module market size reached US$6.972 billion in 2025, and is expected to exceed US$10.36 billion by 2032, with a CAGR of 5.9%. Among them, Sub-1GHz industrial-grade communication modules, as core connectivity components for smart metering, industrial sensing, building automation and other scenarios, continue to see rising market demand. Chengdu Ebyte Electronic Technology Co., Ltd., a leading domestic provider of wireless communication solutions, relying on industry-university-research cooperation with universities such as University of Electronic Science and Technology of China and Southwest Jiaotong University, has launched the E220P-400T22S LoRa wireless module, which has become an ideal choice for industrial IoT scenarios with its low power consumption, long range and high reliability features.
Based on official manual parameters, this article comprehensively analyzes the technical features, application scenarios and deployment guidelines of the E220P-400T22S, providing selection references for industrial equipment developers.
Table of Contents
Core Product Features
Detailed Technical Specifications
Hardware Design and Pin Definition
Operating Modes and Function Description
Configuration Method and Register Description
Typical Application Scenarios
Frequently Asked Questions and Solutions
Selection Reference and Peer Comparison
1. Core Product Features
The E220P-400T22S is a new generation LoRa wireless serial port module designed based on the Semtech LLCC68 chip. Compared with the traditional SX1276 solution, it achieves comprehensive improvements in transmission distance, speed and power consumption. The core advantages are as follows:
Feature Category
Specific Parameters
Core Solution
Semtech LLCC68 LoRa chip
Operating Frequency Band
410.125 ~ 493.125MHz (default 433.125MHz)
Transmit Power
Maximum 22dBm, multi-level software adjustable
Communication Range
Up to 7km in ideal environment (5dBi antenna, 2.5m height, 2.4kbps rate)
Power Consumption Performance
Receive current 11mA, sleep current only 2μA
Reliability Design
Built-in PA+LNA, ESD protection, ±1PPM high-precision active crystal oscillator, industrial temperature range of -40℃~+85℃
Advanced Functions
Wake-on-air, carrier sense, communication encryption, RSSI signal strength detection
Interface Compatibility
UART TTL level, supports 3.3V/5V IO voltage, dual antenna options (IPEX/stamp hole)
This module supports parameter saving after power off, with built-in watchdog design, which can automatically restart under abnormal conditions to ensure long-term stable operation.
2. Detailed Technical Specifications
2.1 Absolute Maximum Ratings
Parameter
Minimum
Maximum
Remarks
Supply Voltage
2.3V
5.5V
Exceeding 5.5V will cause permanent damage
Operating Temperature
-40℃
+85℃
Industrial-grade design
Blocking Power
-
10dBm
Very low risk of burn-out for short-distance use
2.2 Operating Parameters
Parameter
Minimum
Typical
Maximum
Remarks
Supply Voltage
3.3V
5.0V
5.5V
≥5.0V ensures optimal output power
Transmit Current
-
110mA
-
@22dBm transmit power
Receive Current
-
11mA
-
Normal receive mode
Sleep Current
-
2μA
-
Software off mode
Receive Sensitivity
-132dBm
-135dBm
-136dBm
@2.4kbps air data rate
Air Data Rate
2.4kbps
2.4kbps
62.5kbps
Configurable via software
Transmit Packet Length
200Byte
-
-
Supports 32/64/128/200Byte sub-packet settings
Buffer Size
400Byte
-
-
Module Dimensions
16*26mm
-
-
SMD package, 1.27mm pin pitch
3. Hardware Design and Pin Definition
3.1 Pin Layout
The E220P-400T22S adopts a 22-pin SMD package. The core pin definitions are as follows:
Pin Number
Name
Direction
Function Description
1/2/3/4/11/13/19/20/22
GND
-
Power ground
5
M0
Input (weak pull-up)
Used with M1 to set operating mode, can be grounded if not used
6
M1
Input (weak pull-up)
Introduction
Against the backdrop of rapid growth in the global wireless communication module market, QYResearch shows that the global wireless module market size reached US$6.972 billion in 2025, and is expected to exceed US$10.36 billion by 2032, with a CAGR of 5.9%. Among them, Sub-1GHz industrial-grade communication modules, as core connectivity components for smart metering, industrial sensing, building automation and other scenarios, continue to see rising market demand. Chengdu Ebyte Electronic Technology Co., Ltd., a leading domestic provider of wireless communication solutions, relying on industry-university-research cooperation with universities such as University of Electronic Science and Technology of China and Southwest Jiaotong University, has launched the E220P-400T22S LoRa wireless module, which has become an ideal choice for industrial IoT scenarios with its low power consumption, long range and high reliability features.
Based on official manual parameters, this article comprehensively analyzes the technical features, application scenarios and deployment guidelines of the E220P-400T22S, providing selection references for industrial equipment developers.
Table of Contents
Core Product Features
Detailed Technical Specifications
Hardware Design and Pin Definition
Operating Modes and Function Description
Configuration Method and Register Description
Typical Application Scenarios
Frequently Asked Questions and Solutions
Selection Reference and Peer Comparison
1. Core Product Features
The E220P-400T22S is a new generation LoRa wireless serial port module designed based on the Semtech LLCC68 chip. Compared with the traditional SX1276 solution, it achieves comprehensive improvements in transmission distance, speed and power consumption. The core advantages are as follows:
Feature Category
Specific Parameters
Core Solution
Semtech LLCC68 LoRa chip
Operating Frequency Band
410.125 ~ 493.125MHz (default 433.125MHz)
Transmit Power
Maximum 22dBm, multi-level software adjustable
Communication Range
Up to 7km in ideal environment (5dBi antenna, 2.5m height, 2.4kbps rate)
Power Consumption Performance
Receive current 11mA, sleep current only 2μA
Reliability Design
Built-in PA+LNA, ESD protection, ±1PPM high-precision active crystal oscillator, industrial temperature range of -40℃~+85℃
Advanced Functions
Wake-on-air, carrier sense, communication encryption, RSSI signal strength detection
Interface Compatibility
UART TTL level, supports 3.3V/5V IO voltage, dual antenna options (IPEX/stamp hole)
This module supports parameter saving after power off, with built-in watchdog design, which can automatically restart under abnormal conditions to ensure long-term stable operation.
2. Detailed Technical Specifications
2.1 Absolute Maximum Ratings
Parameter
Minimum
Maximum
Remarks
Supply Voltage
2.3V
5.5V
Exceeding 5.5V will cause permanent damage
Operating Temperature
-40℃
+85℃
Industrial-grade design
Blocking Power
-
10dBm
Very low risk of burn-out for short-distance use
2.2 Operating Parameters
Parameter
Minimum
Typical
Maximum
Remarks
Supply Voltage
3.3V
5.0V
5.5V
≥5.0V ensures optimal output power
Transmit Current
-
110mA
-
@22dBm transmit power
Receive Current
-
11mA
-
Normal receive mode
Sleep Current
-
2μA
-
Software off mode
Receive Sensitivity
-132dBm
-135dBm
-136dBm
@2.4kbps air data rate
Air Data Rate
2.4kbps
2.4kbps
62.5kbps
Configurable via software
Transmit Packet Length
200Byte
-
-
Supports 32/64/128/200Byte sub-packet settings
Buffer Size
400Byte
-
-
Module Dimensions
16*26mm
-
-
SMD package, 1.27mm pin pitch
3. Hardware Design and Pin Definition
3.1 Pin Layout
The E220P-400T22S adopts a 22-pin SMD package. The core pin definitions are as follows:
Pin Number
Name
Direction
Function Description
1/2/3/4/11/13/19/20/22
GND
-
Power ground
5
M0
Input (weak pull-up)
Used with M1 to set operating mode, can be grounded if not used
6
M1
Input (weak pull-up)
V2EX
[分享发现] E220P-400T22S LoRa Module In-depth Analysis: Cost-effective Solution for Industrial Wireless Communication Introduction Against the backdrop of rapid growth in the global wireless communication module market, QYResearch shows that the global wireless…
Used with M0 to set operating mode, can be grounded if not used
7
RXD
Input
UART receive, connects to TXD pin of external MCU
8
TXD
Output
UART transmit, connects to RXD pin of external MCU
9
AUX
Output
Module operating status indicator, can be used to wake up external MCU, can be left floating if not used
10
VCC
-
Power input, 2.3~5.5V DC
21
ANT
-
Antenna interface, connects to 50Ω impedance antenna
12/14-18
NC
-
No connection pins, no need to connect
3.2 Hardware Design Notes
Power Design: It is recommended to use a DC regulated power supply with as small ripple coefficient as possible, reserve more than 30% power margin, and ensure reliable grounding of the module.
Wiring Specification: High-frequency digital traces, analog traces and power lines should avoid passing under the module. If necessary, lay copper on the contact layer of the module and ground it well.
Electromagnetic Compatibility: The module should be kept away from strong electromagnetic interference sources such as power supplies, transformers and high-frequency wiring, and maintain an appropriate distance from 2.4GHz devices such as USB 3.0.
Antenna Deployment: The antenna should be exposed as much as possible and vertically upward. If installed in a metal case, use an antenna extension cable to lead the antenna out of the case to avoid signal attenuation.
4. Operating Modes and Function Description
4.1 Operating Mode Switching
The module supports 4 operating modes, set by the level combination of M0 and M1 pins:
Mode
M1
M0
Function Description
0 (Normal Transmission Mode)
0
0
UART and wireless channel fully open, transparent transmission mode
1 (WOR Transmit Mode)
0
1
Supports wake-on-air, can send data to wake up devices in WOR receive mode
2 (WOR Receive Mode)
1
0
Wireless transmission off, only receives data, suitable for low-power battery-powered scenarios
3 (Deep Sleep Mode)
1
1
Cannot send/receive data, can enter register configuration mode
Mode switching takes effect 2ms after the AUX pin outputs high level. If the module is processing data, it will automatically switch to the new mode after data processing is completed.
4.2 Core Function Description
4.2.1 Fixed Transmission Mode
In fixed transmission mode, the module identifies the first 3 bytes of serial port received data as target address high byte + target address low byte + target channel, and only sends data to modules with the specified address and channel, realizing point-to-point directed communication.
4.2.2 Broadcast Transmission Mode
When the module address is set to 0xFFFF or 0x0000, as a transmitter, it can broadcast data to all modules under the same channel; as a receiver, it can monitor communication data of all modules under the same channel, suitable for group communication and network monitoring scenarios.
4.2.3 AUX Pin Function
The AUX pin is used to indicate the module operating status:
Low level indicates the module is busy (data transmission in progress, self-check initialization in progress), cannot switch operating mode
High level indicates the module is idle, mode switching and data transmission can be performed
When receiving data, AUX will pull low 2-3ms in advance to wake up the external MCU to prepare for data reception
5. Configuration Method and Register Description
The module needs to enter deep sleep mode (M1=1, M0=1) for parameter configuration, supports 9600bps 8N1 serial communication format. The core command formats are as follows:
Command Type
Send Format
Return Format
Example
Set Register
C0 + start address + length + parameters
C1 + start address + length + parameters
Set channel to 0x09: send C0 05 01 09, return C1 05 01 09
Read Register
C1 + start address + length
C1 + start address + length + parameters
Read channel: send C1 05 01, return C1 05 01 09
Temporary Set Register
C2 + start address + length + parameters
C1 + start address + length + parameters
Parameters are only valid for the current power-on cycle, restore default values after restart
5.1 Core Register Description
Address
Name
Function Description
00H-01H
7
RXD
Input
UART receive, connects to TXD pin of external MCU
8
TXD
Output
UART transmit, connects to RXD pin of external MCU
9
AUX
Output
Module operating status indicator, can be used to wake up external MCU, can be left floating if not used
10
VCC
-
Power input, 2.3~5.5V DC
21
ANT
-
Antenna interface, connects to 50Ω impedance antenna
12/14-18
NC
-
No connection pins, no need to connect
3.2 Hardware Design Notes
Power Design: It is recommended to use a DC regulated power supply with as small ripple coefficient as possible, reserve more than 30% power margin, and ensure reliable grounding of the module.
Wiring Specification: High-frequency digital traces, analog traces and power lines should avoid passing under the module. If necessary, lay copper on the contact layer of the module and ground it well.
Electromagnetic Compatibility: The module should be kept away from strong electromagnetic interference sources such as power supplies, transformers and high-frequency wiring, and maintain an appropriate distance from 2.4GHz devices such as USB 3.0.
Antenna Deployment: The antenna should be exposed as much as possible and vertically upward. If installed in a metal case, use an antenna extension cable to lead the antenna out of the case to avoid signal attenuation.
4. Operating Modes and Function Description
4.1 Operating Mode Switching
The module supports 4 operating modes, set by the level combination of M0 and M1 pins:
Mode
M1
M0
Function Description
0 (Normal Transmission Mode)
0
0
UART and wireless channel fully open, transparent transmission mode
1 (WOR Transmit Mode)
0
1
Supports wake-on-air, can send data to wake up devices in WOR receive mode
2 (WOR Receive Mode)
1
0
Wireless transmission off, only receives data, suitable for low-power battery-powered scenarios
3 (Deep Sleep Mode)
1
1
Cannot send/receive data, can enter register configuration mode
Mode switching takes effect 2ms after the AUX pin outputs high level. If the module is processing data, it will automatically switch to the new mode after data processing is completed.
4.2 Core Function Description
4.2.1 Fixed Transmission Mode
In fixed transmission mode, the module identifies the first 3 bytes of serial port received data as target address high byte + target address low byte + target channel, and only sends data to modules with the specified address and channel, realizing point-to-point directed communication.
4.2.2 Broadcast Transmission Mode
When the module address is set to 0xFFFF or 0x0000, as a transmitter, it can broadcast data to all modules under the same channel; as a receiver, it can monitor communication data of all modules under the same channel, suitable for group communication and network monitoring scenarios.
4.2.3 AUX Pin Function
The AUX pin is used to indicate the module operating status:
Low level indicates the module is busy (data transmission in progress, self-check initialization in progress), cannot switch operating mode
High level indicates the module is idle, mode switching and data transmission can be performed
When receiving data, AUX will pull low 2-3ms in advance to wake up the external MCU to prepare for data reception
5. Configuration Method and Register Description
The module needs to enter deep sleep mode (M1=1, M0=1) for parameter configuration, supports 9600bps 8N1 serial communication format. The core command formats are as follows:
Command Type
Send Format
Return Format
Example
Set Register
C0 + start address + length + parameters
C1 + start address + length + parameters
Set channel to 0x09: send C0 05 01 09, return C1 05 01 09
Read Register
C1 + start address + length
C1 + start address + length + parameters
Read channel: send C1 05 01, return C1 05 01 09
Temporary Set Register
C2 + start address + length + parameters
C1 + start address + length + parameters
Parameters are only valid for the current power-on cycle, restore default values after restart
5.1 Core Register Description
Address
Name
Function Description
00H-01H
V2EX
Used with M0 to set operating mode, can be grounded if not used 7 RXD Input UART receive, connects to TXD pin of external MCU 8 TXD Output UART transmit, connects to RXD pin of external MCU 9 AUX Output Module operating status indicator, can be used to…
ADDH/ADDL
Module address, default 0x0000, supports broadcast/monitoring when set to 0xFFFF
02H
REG0
Configure UART baud rate (1200~115200bps), parity bit, air data rate (2.4~62.5kbps)
03H
REG1
Configure sub-packet length (32/64/128/200Byte), RSSI noise detection switch, transmit power (10~22dBm)
04H
REG2
Channel setting, 0-83 corresponds to 410.125~493.125MHz, step 1MHz
05H
REG3
Configure RSSI byte output, transmission mode (transparent/fixed), LBT monitoring, WOR cycle (500~4000ms)
06H-07H
CRYPT_H/CRYPT_L
Communication encryption key, write-only, cannot be read, ensuring data transmission security
5.2 Factory Default Parameters
Parameter Item
Default Value
Operating Frequency
433.125MHz
Module Address
0x0000
Air Data Rate
2.4kbps
Serial Baud Rate
9600bps, 8N1
Transmit Power
22dBm
Transmission Mode
Transparent transmission
6. Typical Application Scenarios
The industrial-grade design of the E220P-400T22S makes it widely applicable to the following scenarios:
6.1 Smart Metering System
In remote water, electricity, gas and heat metering scenarios, the low-power feature of the module supports battery power supply, 7km communication range can cover large-scale residential areas, and encryption function ensures metering data security, greatly reducing manual meter reading costs.
6.2 Industrial Sensor Network
In factory environments, the module can connect to various temperature, humidity, pressure and liquid level sensors to realize wireless collection of production data. The anti-interference design ensures stable communication in complex electromagnetic environments, providing data support for industrial Internet platforms.
6.3 Building Automation
Used for wireless communication in intelligent lighting, elevator monitoring and fire alarm systems, avoiding complex wiring, supporting multi-node networking, and reducing construction difficulty and cost of building intelligent transformation.
6.4 Agricultural IoT
In field planting and livestock breeding scenarios, the module can connect to soil monitoring and environmental sensing equipment to realize remote data collection and equipment control. The low-power feature is suitable for field battery-powered deployment.
6.5 Intelligent Security System
Used for wireless anti-theft alarm, access control and video monitoring data backhaul. The long-distance communication feature is suitable for large-scale security deployment in parks and factories.
7. Frequently Asked Questions and Solutions
7.1 Short Communication Range
Possible Causes:
Obstacles, same-band interference, or metal objects near the antenna
Air data rate set too high (higher rate leads to shorter transmission distance)
Insufficient power supply voltage, resulting in reduced transmit power
Poor antenna matching or low-quality antenna
Solutions:
Elevate the antenna installation height as much as possible, avoid obstacles and interference sources
Reduce the air data rate, adjust the transmit power to the maximum value
Ensure the power supply voltage is ≥5V, use a regulated power supply
Replace a matched high-gain antenna, use an antenna extension cable when deployed inside a metal case
7.2 Module Easy to Damage
Possible Causes:
Power supply voltage exceeds 5.5V or reverse polarity connection
Unreleased static electricity causing chip breakdown
Operating environment humidity too high or temperature out of range
Solutions:
Add over-voltage and reverse polarity protection circuits, strictly control the power supply voltage
Implement electrostatic protection during installation and operation, ensure good module grounding
Avoid using in environments exceeding the -40℃~+85℃ range
7.3 High Bit Error Rate
Possible Causes:
Same-frequency signal interference nearby
Unstable power supply causing communication abnormalities
Antenna extension cable too long or poor quality
Solutions:
Switch the communication channel to avoid interference frequency bands
Optimize power supply design, add filter capacitors
Shorten the antenna feeder length, use low-loss coaxial cable
Module address, default 0x0000, supports broadcast/monitoring when set to 0xFFFF
02H
REG0
Configure UART baud rate (1200~115200bps), parity bit, air data rate (2.4~62.5kbps)
03H
REG1
Configure sub-packet length (32/64/128/200Byte), RSSI noise detection switch, transmit power (10~22dBm)
04H
REG2
Channel setting, 0-83 corresponds to 410.125~493.125MHz, step 1MHz
05H
REG3
Configure RSSI byte output, transmission mode (transparent/fixed), LBT monitoring, WOR cycle (500~4000ms)
06H-07H
CRYPT_H/CRYPT_L
Communication encryption key, write-only, cannot be read, ensuring data transmission security
5.2 Factory Default Parameters
Parameter Item
Default Value
Operating Frequency
433.125MHz
Module Address
0x0000
Air Data Rate
2.4kbps
Serial Baud Rate
9600bps, 8N1
Transmit Power
22dBm
Transmission Mode
Transparent transmission
6. Typical Application Scenarios
The industrial-grade design of the E220P-400T22S makes it widely applicable to the following scenarios:
6.1 Smart Metering System
In remote water, electricity, gas and heat metering scenarios, the low-power feature of the module supports battery power supply, 7km communication range can cover large-scale residential areas, and encryption function ensures metering data security, greatly reducing manual meter reading costs.
6.2 Industrial Sensor Network
In factory environments, the module can connect to various temperature, humidity, pressure and liquid level sensors to realize wireless collection of production data. The anti-interference design ensures stable communication in complex electromagnetic environments, providing data support for industrial Internet platforms.
6.3 Building Automation
Used for wireless communication in intelligent lighting, elevator monitoring and fire alarm systems, avoiding complex wiring, supporting multi-node networking, and reducing construction difficulty and cost of building intelligent transformation.
6.4 Agricultural IoT
In field planting and livestock breeding scenarios, the module can connect to soil monitoring and environmental sensing equipment to realize remote data collection and equipment control. The low-power feature is suitable for field battery-powered deployment.
6.5 Intelligent Security System
Used for wireless anti-theft alarm, access control and video monitoring data backhaul. The long-distance communication feature is suitable for large-scale security deployment in parks and factories.
7. Frequently Asked Questions and Solutions
7.1 Short Communication Range
Possible Causes:
Obstacles, same-band interference, or metal objects near the antenna
Air data rate set too high (higher rate leads to shorter transmission distance)
Insufficient power supply voltage, resulting in reduced transmit power
Poor antenna matching or low-quality antenna
Solutions:
Elevate the antenna installation height as much as possible, avoid obstacles and interference sources
Reduce the air data rate, adjust the transmit power to the maximum value
Ensure the power supply voltage is ≥5V, use a regulated power supply
Replace a matched high-gain antenna, use an antenna extension cable when deployed inside a metal case
7.2 Module Easy to Damage
Possible Causes:
Power supply voltage exceeds 5.5V or reverse polarity connection
Unreleased static electricity causing chip breakdown
Operating environment humidity too high or temperature out of range
Solutions:
Add over-voltage and reverse polarity protection circuits, strictly control the power supply voltage
Implement electrostatic protection during installation and operation, ensure good module grounding
Avoid using in environments exceeding the -40℃~+85℃ range
7.3 High Bit Error Rate
Possible Causes:
Same-frequency signal interference nearby
Unstable power supply causing communication abnormalities
Antenna extension cable too long or poor quality
Solutions:
Switch the communication channel to avoid interference frequency bands
Optimize power supply design, add filter capacitors
Shorten the antenna feeder length, use low-loss coaxial cable
V2EX
ADDH/ADDL Module address, default 0x0000, supports broadcast/monitoring when set to 0xFFFF 02H REG0 Configure UART baud rate (1200~115200bps), parity bit, air data rate (2.4~62.5kbps) 03H REG1 Configure sub-packet length (32/64/128/200Byte), RSSI noise detection…
8. Selection Reference and Peer Comparison
8.1 Peer Product Parameter Comparison
Product Model
Core Chip
Transmit Power
Maximum Communication Range
Receive Current
Package Size
E220P-400T22S
LLCC68
22dBm
7km
11mA
16*26mm
E220-400T30S
LLCC68
30dBm
10km
12mA
18*28mm
Competitor SX1276 Module
SX1276
20dBm
5km
15mA
17*26mm
8.2 Matching Antenna Recommendations
Ebyte officially provides a variety of matching antennas for selection:
Antenna Model
Type
Gain
Application Scenario
TX433-JZ-5
Rubber Antenna
2.0dBi
Short-distance devices, handheld terminals
TX433-JK-20
Rubber Antenna
3.0dBi
Medium-distance transmission, fixed equipment
TX433-XPH-300
Suction Cup Antenna
6.0dBi
Long-distance transmission, outdoor deployment
About Ebyte
Chengdu Ebyte Electronic Technology Co., Ltd. is a national high-tech enterprise focusing on wireless communication applications. Its products cover the full range of wireless modules including LoRa, Bluetooth, Wi-Fi and 5G, which are widely used in industrial IoT, smart home, smart agriculture and other fields. The company has established technical cooperation with multiple universities around the world, and its products have passed international certifications such as FCC, CE and RoHS, and are exported to more than 160 countries and regions. It can provide customers with customized development and one-stop wireless communication solutions.
Official Website: https://www.cdebyte.com
Technical Support: support@cdebyte.com
Address: Building B5, Mould Park, 199 Xiqu Avenue, High-tech Zone, Chengdu, Sichuan, China
8.1 Peer Product Parameter Comparison
Product Model
Core Chip
Transmit Power
Maximum Communication Range
Receive Current
Package Size
E220P-400T22S
LLCC68
22dBm
7km
11mA
16*26mm
E220-400T30S
LLCC68
30dBm
10km
12mA
18*28mm
Competitor SX1276 Module
SX1276
20dBm
5km
15mA
17*26mm
8.2 Matching Antenna Recommendations
Ebyte officially provides a variety of matching antennas for selection:
Antenna Model
Type
Gain
Application Scenario
TX433-JZ-5
Rubber Antenna
2.0dBi
Short-distance devices, handheld terminals
TX433-JK-20
Rubber Antenna
3.0dBi
Medium-distance transmission, fixed equipment
TX433-XPH-300
Suction Cup Antenna
6.0dBi
Long-distance transmission, outdoor deployment
About Ebyte
Chengdu Ebyte Electronic Technology Co., Ltd. is a national high-tech enterprise focusing on wireless communication applications. Its products cover the full range of wireless modules including LoRa, Bluetooth, Wi-Fi and 5G, which are widely used in industrial IoT, smart home, smart agriculture and other fields. The company has established technical cooperation with multiple universities around the world, and its products have passed international certifications such as FCC, CE and RoHS, and are exported to more than 160 countries and regions. It can provide customers with customized development and one-stop wireless communication solutions.
Official Website: https://www.cdebyte.com
Technical Support: support@cdebyte.com
Address: Building B5, Mould Park, 199 Xiqu Avenue, High-tech Zone, Chengdu, Sichuan, China
[程序员] 10 天被联通限速 3 次。
坐标江苏。上个月第一次玩 pt ，上传 1t 多，然后不出意外被限速了。50mbps 的，只有 5mbps 了。qb 直接被我限制在 800k 。
然后打了联通客服，2 小时就给解除了，狠狠夸了联通。
然而过了 5 天，再次被限速，我期间没做种，相册都没备份，电脑都关机了。又打了客服，然后 2 小时解除了，这次有个区域负责人要求上门拍照以及签协议。我要求给出我违规的证明。没有回复。不了了之，反正速度恢复了。
2 天后又被限速，无语了，我直接让师傅上门拍照，取证。证明没有什么 pcdn 的，然后 10010,12345,工信部。全部投诉。最后客服回电，投诉工信部的事情会尽快解决。
昨天电话和我说网速恢复了，可我一看 ip 还在 116.147,测了一下上传竟然 50mbps 正常了。希望这次坚挺点。
这里有个认知以外的事情，就是我的公网 ip 还是在 116.147 这个黑网段里，但是上传速度现在正常了。看来他们是有手段给宽带账户特殊处理的。难道我进白名单了？🧐
坐标江苏。上个月第一次玩 pt ，上传 1t 多，然后不出意外被限速了。50mbps 的，只有 5mbps 了。qb 直接被我限制在 800k 。
然后打了联通客服，2 小时就给解除了，狠狠夸了联通。
然而过了 5 天，再次被限速，我期间没做种，相册都没备份，电脑都关机了。又打了客服，然后 2 小时解除了，这次有个区域负责人要求上门拍照以及签协议。我要求给出我违规的证明。没有回复。不了了之，反正速度恢复了。
2 天后又被限速，无语了，我直接让师傅上门拍照，取证。证明没有什么 pcdn 的，然后 10010,12345,工信部。全部投诉。最后客服回电，投诉工信部的事情会尽快解决。
昨天电话和我说网速恢复了，可我一看 ip 还在 116.147,测了一下上传竟然 50mbps 正常了。希望这次坚挺点。
这里有个认知以外的事情，就是我的公网 ip 还是在 116.147 这个黑网段里，但是上传速度现在正常了。看来他们是有手段给宽带账户特殊处理的。难道我进白名单了？🧐