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Month: March 2016

Arduino compass (HMC5883L) with OLED screen

Arduino compass (HMC5883L) with OLED screen

A simple compass, using the HMC5883L chip, on a breadboard with an Arduino Nano and an OLED screen. Compass connection is over I2C, the screen uses SPI. I decided not to use a library for the HMC5883L but keep it

Tom 23/03/201623/03/2016 projects 3 Comments Read more

Arduino spectrum analyser and light organ

Arduino spectrum analyser and light organ

I remember about 20 years ago one of my first electronics projects was a light organ, with light spots of 220V; that sounds quite dangerous in hindsight. I built a 21st century version of that using the modest DSP capability

Tom 23/03/201623/03/2016 projects 21 Comments Read more

RGB control over wifi (with ESP8266 ESP-01)

RGB control over wifi (with ESP8266 ESP-01)

This project is inspired by my friends at DimSumLabs who created a web server to control the lab’s RGB LED lights, using the ESP8266 wifi module and NodeMCU to program it. I made a smaller version, using the familiar Arduino IDE with an

Tom 01/03/201603/10/2016 projects 37 Comments Read more

Remote control by Arduino phone DTMF (with SIM800)

Remote control by Arduino phone DTMF (with SIM800)

The SIM800 module is great for making a simple phone and listening to the radio, but i noticed it also has a DTMF decoder onboard which allows us to control our Arduino remotely! DTMF are the ‘touchtone’ signals you can send over the

Tom 01/03/201601/03/2016 projects 19 Comments Read more

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