Category Archives: Coding

For Loop Gotchas

Posted on 2021-08-29 by M. Eric Carr

Be careful when using for loops with unsigned variables… Continue reading →

Posted in BASIC, C, Coding, Fractals | Leave a comment

Wireless Sketch Updates for ESP8266

Posted on 2021-07-18 by M. Eric Carr

Here’s how to use the Arduino IDE to program ESP8266 boards over WiFi. Continue reading →

Posted in Arduino, C, Digital, HOW-TO, Internet, Networking | Tagged , , , , , , , , | Leave a comment

Bearing Raceway Speedometer

Posted on 2021-04-30 by M. Eric Carr

A TTGO board, 3D printed enclosure, and some optoelectronics are turned into a speedometer for steel bearing balls. Continue reading →

Posted in 3D Printing, Arduino, C, Coding, Digital | Leave a comment

TTGO T-Display I2C pin location

Posted on 2021-02-21 by M. Eric Carr

I2C is broken on the TTGO T-Display. Fortunately, there’s an easy fix. Continue reading →

Posted in Arduino, C, Coding, Digital, Troubleshooting | Leave a comment