SmartSpin2K is an open hardware and software DIY module that converts BLE signals from a cycling APP (like Zwift, FulGaz, RGT, Sufferfest, etc.) and uses the information they broadcast to increase and decrease resistance on a spin bike by rotating the resistance knob with a stepper motor. SmartSpin2k receives BLE signals from common cycling peripherals such …
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 …
Upgrade DIY Mini DSO to a Real Oscilloscope With Awesome Features Read More »
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 …
BOXOI – an Open Source Miniature 3D Zoetrope DIY Kit Read More »
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, …
DIY ESP8266 ESP-12 Socket – Snap Fit, Breadboard Friendly, No Soldering Read More »
Hardware components: Atmel ATtiny13a CHF 1.25 × 1 Osram SFH409 IR Diode CHF 0.75 × 1 Battery holder CR1220 CHF 0.65 × 1 Coin Cell Battery CR1220 3V × 1 Push Button CHF 0.25 × 1 Resistor 15Ω CHF 0.07 × 1 Micro Slide Switch SK12D07 CHF 0.28 × 1 Hand tools and fabrication machines: …
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 …
For our ECE 4760 final project, we designed and built a pointing device with webcam-color-tracking based movement control. Our implementation allows the user to wear a set of finger-sleeves complete with buttons for clicking and scrolling and a red LED for color-tracking cursor control to interface with a computer as a normal mouse would. Users …
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 …
BrainMap: fNIR imaging of the brain Using Atmega644 Read More »
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 …
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 …
