Paul's DIY electronics blog

For my Raspberry Pi automatic power supply design with a UPS function (see another post), I wanted to learn more about the charging and disc...

Based on my one button start-stop design, I modified the circuit so the RPi can be used in autonomous or embedded applications. https://ww...

This post was concocted several years ago to show various ways to make sure applications or the kernel are protected from hang-up issues. ...

In my search to get to an improved power supply for the RPi, I have yet designed another version that is more simple to build and use compa...

I published a post on the Raspberry Pi forum that shows how to do this with only a button, two resistors and 1 capacitor. https://www.rasp...

After having found a simple and reliable solution for a rotary encoder using a PicAXE (see demistifying rotary encoders), I figured that I c...

For a new project, I needed a way to reduce parts and complexity, so it was time to finally bite the bullit and start working on a microcont...

A while back I did some work by another forum member to incorporate an interesting chip with Raspberry Pi's. It really lacks a "PC...

Here is a post I wrote on the Raspberry Pi forum about adding an analog output to the Pi by using a DAC. Here is that link : https://www.r...

Here is a post that I put on the Raspberry Pi forum about using the Pulse Width Modulation feature to create a (static) output voltage. The ...

I wrote a post on the Raspberry Pi forums about adding an analog input to the Pi by using an ADC. The application I used to describe it was ...

Because I need a fan for my power supply project, I started a little project to do that. I don't like noise or hum, so I wanted to use ...

I recently finished a design, based on an idea from sparkyPi, a raspberry Pi forum member, where he was using a rather special purpose chip ...