Content for Project

HV Nixie DC-DC Switching Power Supply using MAX1771

“Nixie tubes need about ~180Vdc to light up and thus on most devices, a DC-DC converter is needed. Here we designed a simple DC-DC switching regulator capable of powering most of Nixie tubes. The board accepts 12Vdc input …

Inside the Am2901: AMD’s 1970s bit-slice processor

“You’re probably familiar with modern processors made by Advanced Micro Devices. But AMD’s processors go back to 1975, when AMD introduced the Am2901. This chip was a type of processor called a bit-slice processor: each chip processed just …

Project  lab-balance

lab-balance

“This project aims to replace the electronics contained within a cheap scale from AliExpress to archive a higher resolution and hackability. Furthermore I need a scale which does not turn off after 30 seconds of use! The goal is not …

Project  LED candles

LED candles

“These candles flicker like a real candles and can be activated with real flame Flame (or heat) detection is based on temperature dependence of the LED’s forward voltage. This voltage is measured (at very low LED current) by internal …

Low cost Carbon Monoxide meter

“Today Carbon Monoxide (CO) meters are available in different forms. Overall, Carbon Monoxide meters sense CO fast and display the amount to the user and trigger alarm if it reaches a critical level. Compare with most of the DIY Carbon …

mains frequency measurement unit

“The circuit board presented here enables the exact mains frequency measurement of the power supply system (50 Hz and 60Hz). It is universally constructed and can be operated with a RaspberryPi 3/4 as well as with a USB-TTL …

Make It So! Star Trek TNG Mini Engineering Computer

“This is a working display based on Star Trek TNG. Uses APIs and sensors for weather, VOCs, power measurement, calendar, fitness, and news. Overview I grew up watching Star Trek: The Next Generation. I’ve always wanted to build a …

Micro:bit - LED Matrix

“In this guide I will go through how to build a LED matrix for the micro:bit out of LED strips. I will be using a 4x4 matrix and a 10x10 matrix as my examples. Since I work at a …

Project  MP3Flower

MP3Flower

“Mp3Flower is an MP3 player for small children from 2 to 5 years old. Mp3Flower is an MP3 player for small children from 2 to 5 years old. I present my work in a little details so that it can …

Playing MP3’s (and other types) on your ESP32 from an SD Card

“How to play MP3’s and other file formats on your ESP32 from an SD Card. All you need to know to make a simple music player. Code shown in video is below.”