ESP32: When Is A P4 A P4, But Not The P4 You Thought It Was
https://hackaday.com/2026/03/21/esp32-when-is-a-p4-a-p4-but-not-the-p4-you-thought-it-was/

We’re used to electronic parts of the same type staying predictably the same, sometimes over many years. An early Z80 from the mid 1970s can be exchanged with one from …read more (https://hackaday.com/2026/03/21/esp32-when-is-a-p4-a-p4-but-not-the-p4-you-thought-it-was/)

Reviving a Cursed Sun SPARCstation IPX
https://hackaday.com/2026/03/21/reviving-a-cursed-sun-sparcstation-ipx/

The best part about retro computing is the idea that you’ll save some poor system from being scrapped and revive it to a working state, at which point you can …read more (https://hackaday.com/2026/03/21/reviving-a-cursed-sun-sparcstation-ipx/)

Analog Video From an 8-Bit Microcontroller
https://hackaday.com/2026/03/21/analog-video-from-an-8-bit-microcontroller/

Although the CRT has largely disappeared from our everyday lives, there was a decades-long timeframe when this was effectively the only display available. It’s an analog display for an analog …read more (https://hackaday.com/2026/03/21/analog-video-from-an-8-bit-microcontroller/)

An Electric Jellyfish For Androids
https://hackaday.com/2026/03/21/an-electric-jellyfish-for-androids/

We have to admit, we didn’t know that we wanted a desktop electric jellyfish until seeing [likeablob]’s Denki-Kurage, but it’s one of those projects that just fills a need so …read more (https://hackaday.com/2026/03/21/an-electric-jellyfish-for-androids/)

How a Belkin USB Charger Pulls off a 3 Milliwatt Standby Usage
https://hackaday.com/2026/03/22/how-a-belkin-usb-charger-pulls-off-a-3-milliwatt-standby-usage/

A well-known property of wall warts like power bricks and USB chargers is that they always consume some amount of power even when there’s no connected device drawing power from …read more (https://hackaday.com/2026/03/22/how-a-belkin-usb-charger-pulls-off-a-3-milliwatt-standby-usage/)

Building a $50 SDR with 20 MHz Bandwidth
https://hackaday.com/2026/03/22/building-a-50-sdr-with-20-mhz-bandwidth/

Although the RTL-SDR is cheap, accessible, and capable enough for many projects, it does have some important limitations. In particular, its bandwidth is limited to about 3.2 MHz, and the …read more (https://hackaday.com/2026/03/22/building-a-50-sdr-with-20-mhz-bandwidth/)