Tag Archive: PCB

Ultrasonic Cleaner Reverse-Engineering (Codyson CD-7810)

My Ultrasonic Cleaner that served me well for a couple of years, suddenly decided to quietly leave this world… And so I reverse-engineered it’s schematic!

USB Audio Multiplexer

On my desktop PC I have a speakers and a headphones. Usually I use headphones, but when I need to switch to speakers I need to physically plug in speakers instead of headphones to my PC’s soundcard. I wanted to solve this problem for a long time, but never get around of that until recently …

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ATtiny2313 – Based Thermostat Project Update #2

First fully working revision of firmware is finished, which takes all 2k of ATtiny2313′s memory. I wrote it in C, and I wanted to implement some other functionality, but unfortunately I’m out of space(of course if I would want to, I can put there ATtiny4313, which is identical to ATtiny2313, but has 4k of memory). …

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ATtiny2313 – Based Thermostat Project (part 3)

ATtiny2313 – Based thermostat project update. I wrote a small test firmware for it to test if everything is wired up the right way and to test it’s current consumption. And it turns out that there were some mistakes.. Also it’s current consumption is well below 150mA that I was expecting.

ATtiny2313 – Based Thermostat Project (part 2)

So I’ve came back to my ATtiny2313 – based thermostat project, that I’ve started to work on some time ago. And today I have assembled a first prototype (actually I only need a couple of these). If you haven’t seen video I’ve made on this project, you can watch it here: Part1 Video. It’s based …

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DIY PIC16F883 Development Board

Few month ago I wanted to try to write software for Microchip PIC16F883 microcontroller and I couldn’t find simple development board for it. And so I made my own.

LM317 Adjustable Power Supply Followup

In this followup video I’ll show some problems that I encountered with my power supply from the previous tutorial video and will show you how I fixed those. It shows that even with the simplest project where “nothing can go wrong” you can’t predict every problem that could happen.

How to make PCB’s using Toner Transfer method.