Monthly Archives: June 2020

Arduino: OLED Display (SSD1306)

The ones I got were 126×64 displays powered by SSD1306 chips. They run over I2C so they are pretty easy to wire up: DEVICE NANO GND Ground VCC +5V SCL A5 SDA A4 You do have to make sure you … Continue reading

Posted in Arduino | Tagged | Comments Off on Arduino: OLED Display (SSD1306)

Arduino: Relays

Opens and closes a circuit that’s “air-gapped” from the Arduino, allowing you to open/close circuits of much higher voltages (like 120V). Not sure how how good of an idea that is, considering the quality of these boards. DEVICE NANO DC+ … Continue reading

Posted in Arduino | Tagged | Comments Off on Arduino: Relays

Arduino: Capacitive Touch Switch (TTP223B)

It operates as any other momentary switch (in that it “closes” when you are touching it, and “opens” when you let go. As opposed to “toggling” between “on” and “off.”) DEVICE NANO VCC +5V GND Ground SIG D2 On these … Continue reading

Posted in Arduino | Tagged | Comments Off on Arduino: Capacitive Touch Switch (TTP223B)

Returning to Arduinos

I recently bought some Arduino Nano clones. The clones are vastly cheaper, but they are clearly not as well made, and sometimes you might end up with slightly different versions of things. The official Arduinos also help fund the Arduino … Continue reading

Posted in Arduino | Tagged | Comments Off on Returning to Arduinos