Paul's DIY electronics blog

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 ...

I finally got around to building my own DC Power Load. My noise problems with the DC Power Supply, as described in another post, force...

(above is the new third and updated generation. Twin-T on top, below it the Victor 1KHz reference oscillator, sitting on top of the heavily ...

When I got started with my Raspberry Pi, I quickly ran into situations where I needed to reset, restart or halt the Pi. I designed the follo...

In an effort to avoid run-away issues with my HVAC system, located on another continend, I wanted to make sure that a crash of the Raspberry...

Quite some time ago I designed this simple but effective battery operated emergency supply. It is used to prevent short brown-outs and also ...

I wrote this post a while back when I wanted to use this sensor for my thermostat application built around a Raspberry Pi. Here is the pos...