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Project 3.3V Mod for Ultrasonic Sensors (prepare HC-SR04 for 3.3V Logic on ESP32/ESP8266, Particle Photon, Etc.)

“TL;DR: On the sensor, cut the trace to the Echo pin, then re-connect it using a voltage divider (Echo trace -> 2.7k -> Echo pin -> 4.7k -> GND).If you are anything like me, you have come to know and …

“Arduino-based heaband that uses haptic feedback to navigate blind people. Controlled via Bluetooth using Android app. Ariadne Headband is ongoing project that aims to create haptic navigation for blind people (among others). It uses 4 vibration motors placed in set …

“I already built a nifty handheld controller, and I should be enjoying my retro gaming experiences, but I couldn’t help building something new, so here is a PS2-to-Atari5200 adapter Purpose This adapter allows you to use a PS2 …

“The Roku TV is perfect for watching Netflix but I don’t like the remote. Although the little box is small and easy to use, the infrared range is pretty bad. I almost always reach out for the iOS app …

“I bought a CNC router last spring to do some woodworking and to mill aluminum. I’m also an obsessive electronics tinkerer, and I later realized that I had inadvertently taken my tinkering abilities to another level when I added …

“This is tutorial to make a 12 DOF or four leg (quadruped) robot using SG90 servo with servo driver and it can be controlled using WIFI Web server via smartphone browser Total cost for this project is around US $55 …

“This is a radio controller that has 2 analog channels and the data is out from a MPU6050 gyro module. So, we could control a toy car for example just by rotating the controller. I usually use the NRF24 module …

“This sentry robot will wait quietly for someone to pass by, then it springs to life! A lot of fun anytime or make it especially for Halloween. Using MakeCode drag and drop blocks you will make a scary monster that …

“I made dragonfly. The dragonfly swings head with a gesture sensor and a servo motor.”

“Did you know that there is a sensor inside ESP32? This is the HALL SENSOR. It is located inside the metal part of the board in the Tensilica microcontroller chip. In todays video, Ill introduce the Hall sensor, and create …