[Trent M. Wyatt]’s CPUVolt library provides a fast way to measure voltage using no external components, and no I/O pin. It only applies to certain microcontrollers, but he provides example …read more (https://hackaday.com/2023/12/21/arduino-measures-remaining-battery-power-with-zero-components-no-i-o-pin/)

Tesla’s Plug Moves Another Step Closer To Dominance
https://hackaday.com/2023/12/21/teslas-plug-moves-another-step-closer-to-dominance/

Fast charging station for electric cars equipped with a quick charger
" data-medium-file="https://hackaday.com/wp-content/uploads/2022/11/car_chargers_AdobeStock_449890707.jpeg?w=400" data-large-file="https://hackaday.com/wp-content/uploads/2022/11/car_chargers_AdobeStock_449890707.jpeg?w=800">Charging an EV currently means making sure you find a station with the right plug. SAE International has now published what could be the end to the mishmash of standards …read more (https://hackaday.com/2023/12/21/teslas-plug-moves-another-step-closer-to-dominance/)

How Do You Test If An EEPROM Can Hold Data For 100 Years?
https://hackaday.com/2023/12/21/how-do-you-test-if-an-eeprom-can-hold-data-for-100-years/

Data retention is a funny thing. Atmel will gladly tell you that the flash memory in an ATmega32A will retain its data for 100 years at room temperature. Microchip says …read more (https://hackaday.com/2023/12/21/how-do-you-test-if-an-eeprom-can-hold-data-for-100-years/)

Teardown Of FGM-148 Javelin Missile’s Guidance Computer
https://hackaday.com/2023/12/21/teardown-of-fgm-148-javelin-missiles-guidance-computer/

You know it’s a good teardown when [Michel] starts off by saying to not ask him where exactly he got the guidance section of an FGM-148 Javelin from. This shoulder-launched …read more (https://hackaday.com/2023/12/21/teardown-of-fgm-148-javelin-missiles-guidance-computer/)

Displays We Love Hacking: SPI and I2C
https://hackaday.com/2023/12/21/displays-we-love-hacking-spi-and-i2c/

I’ve talked about HD44780 displays before – they’ve been a mainstay of microcontroller projects for literal decades. In the modern hobbyist world, there’s an elephant in the room – the …read more (https://hackaday.com/2023/12/21/displays-we-love-hacking-spi-and-i2c/)

Bed Sensors Do More Than You’d Think
https://hackaday.com/2023/12/21/bed-sensors-do-more-than-youd-think/

Bed sensors do sort of sound like a gimmick — after all, who cares whether someone is occupying the bed? But if you think about it, that information is quite …read more (https://hackaday.com/2023/12/21/bed-sensors-do-more-than-youd-think/)

Making a Guitar Go to Eleven, The Hard Way
https://hackaday.com/2023/12/21/making-a-guitar-go-to-eleven-the-hard-way/

At the end of the day, all it takes to make a guitar go to eleven is a new knob. Making the knob is another thing — that takes a …read more (https://hackaday.com/2023/12/21/making-a-guitar-go-to-eleven-the-hard-way/)

VU Meter Built With Neat Graphical VFD Display
https://hackaday.com/2023/12/21/vu-meter-built-with-neat-graphical-vfd-display/