Monthly Archives: September 2020

Using an Arduino as a TOTP Token

Posted on September 17, 2020 by Edwin

TOTP (time-based One-Time-Passwords) as super neat and widely supported. I will not go into the background or theory, but it is possible to use an Arduino and a RTC module as a TOTP token for your email provider. DISCLAIMER: STORING … Continue reading →

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Arduino: Real-Time Clock Module (DS3231)

Posted on September 16, 2020 by Edwin

Real-Time Clock module running over I2C. You will need to give it a CR2032 battery so it retains the time when the power is removed from the Arduino. DEVICE NANO GND Ground VCC +5V/+3.3V SCL A5 SDA A4 You will … Continue reading →

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Ducky One 2 – Hot Tips

Posted on September 16, 2020 by Edwin

I recently acquired a tiny hipster mechanical keyboard, the “Ducky one 2 Mini RGB”, a “60% mechanical keyboard” (look it up). After spending a couple hours working out the kinks, I am hereby documenting my findings so I can reference … Continue reading →

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Arduino: Digital Current Sensor (INA219)

Posted on September 12, 2020 by Edwin

Chip which will reach current in a circuit and report it to Arduino via I2C. DEVICE NANO LOAD Power Supply VCC 5V GND GND Negative Terminal Negative Terminal SCL A5 SDA A4 VIN- Positive Terminal VIN+ Positive Terminal The default … Continue reading →

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WLED – Macros

Posted on September 8, 2020 by Edwin

I have been using the “WLED” project running on an ESP8266 to power a strip of individually controlled LEDs in my house. It works pretty well, except I don’t like have to use the web interface to turn it on … Continue reading →

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