| A compact ATtiny85-based circuit that adds intelligent power management — push-on/hold-off control, graceful shutdown, USB detection, batter...
| A compact ATtiny85-based circuit that adds intelligent power management — push-on/hold-off control, graceful shutdown, USB detection, batter...
| A little help when programming Raspberry Pi Pico and compatible RP2040 and RP2350 boards.
| A simple circuit that avoids unwanted noise when turning the amplifier on and off, without microcontrollers and self-powered.
| A small portable device featuring timer, clock, and calendar functions, equipped with a simple and functional interface and a truly long bat...
| Here is a possible solution to power portable devices based on Raspberry Pi. The goal of this project is to propose a power supply system us...
| Here is a possible solution to power portable devices based on Raspberry Pi. The goal of this project is to propose a power supply system us...
| The success and popularity of Raspberry Pi boards is certainly well-deserved, but over time many users have noticed and complained about the...
| The fingerprint-readout function is widely used in high-tech devices such as notebooks, advanced keyboards, and automated access control, bu...
| Simple but effective all-analog fading LED circuit.
| A simple but expandable and customizable microcontroller-free relays selector and driver circuit based on SCRs.