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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
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
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
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