Paul's DIY electronics blog
Tuesday, May 19, 2015
Building a Simple 1KHz Distortion Analysis Tool (upgraded)
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(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 ...
5 comments:
_HowTo: Triple function button to reboot/halt/reset/restart RPi
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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...
Monday, May 18, 2015
_HowTo: Failsafe(r) use of GPIO pin for critical applications
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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...
_HowTo: Simple UPS for RPi
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Quite some time ago I designed this simple but effective battery operated emergency supply. It is used to prevent short brown-outs and also ...
1 comment:
_HowTo: Detailed description of the popular DHT22 temp & humidity sensor
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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...
Tuning a 0..30V DC 0..3A PSU DIY kit
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Before you read on, you should know that after building two versions of the DIY kit, I was not very impressed about the stability, noise, bu...
128 comments:
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