How To – DIY – Projects

Upgrade DIY Mini DSO to a Real Oscilloscope With Awesome Features

Upgrade DIY Mini DSO to a Real Oscilloscope With Awesome Features

Last time I shared how to make a Mini DSO with MCU. To know how to built it step by step, please refer to my previous instructable: https://www.instructables.com/id/Make-Your-Own-Osc… Since many people are interested in this project, I spent some time upgrading it overall. After upgrading, the Mini DSO is more powerful. Specification: MCU: STC8A8K64S4A12 @27MHz Get …

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BOXOI - an Open Source Miniature 3D Zoetrope DIY Kit

BOXOI – an Open Source Miniature 3D Zoetrope DIY Kit

Project Background: In 2015, I started a kickstarter project of a miniature 3D zoetrope DIY kit. The next year, I started the version 2 of said project by further simplifying the kit and reducing its manufacturing cost. Sadly, both crowdfunding failed, but this is how the 3D zoetrope looks. *Zoetrope: a 19th-century optical toy consisting of …

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DIY ESP8266 ESP-12 Socket - Snap Fit, Breadboard Friendly, No Soldering

DIY ESP8266 ESP-12 Socket – Snap Fit, Breadboard Friendly, No Soldering

I’ve been looking for an ESP8266 (ESP-12) socket for a long time, and the way I see it, It had to have all of these properties: 100% Breadboard Friendly No soldering required Snap Fit and snugly hold the ESP8266 DIY from everyday household items Easy to print Easy to build I found a few solution on Thingiverse.com, …

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How to fix dead atmega and attiny avr chips

Atmega fusebit doctor, as name says it, device for repairing dead Atmega and Attiny family AVRs by writing fabric fusebits. Most common mistakes or problems are a wrong clock source (CKSEL fusebits), disabled SPI programming (SPIEN fuse) or disabled reset pin (RSTDISBL fuse). This simple and cheap circuit will fix you uC in a fraction …

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BrainMap: fNIR imaging of the brain Using Atmega644

Introduction Our project records and extracts event-related features from a 36-point relative blood-oxygen concentration sensor array from the surface of the brain. We chose this project because of a combined interest in brain-computer interfaces. In an attempt to balance cost, complexity, and sensor density, we decided to implement a NIRS-inspired system. After collecting data from …

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GoConn Bicycle Computer Using Atmega 32

Introduction This project is a bicycle computer that includes velocity monitoring, calorie computation, an audio/visual alarm, and a wireless remote. Bicycles are great for transportation as well as exercise. Unfortunately, many bicycles across campus and around the world are stolen everyday. We designed a computer that would deter someone from stealing the bicycle while also …

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DIY Polygraph Mask using ATmega32

Introduction A polygraph (often and incorrectly called a ‘lie detector’) is a machine which plots in real time several human biological signals such as pulse rate, galvanic skin resistance (GSR), blood pressure, and breathing rate. This machine, in conjunction with a certified examiner, is then used to analyze a subject’s stress during interrogation with the …

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