Video Tutorial: BME820 Environmental Sensor and MQTT under Micropython
February 20, 2018
This week we’re starting to make our Micropython powered Wemos D1 truly useful with a sensor and data collection. We’ll wire up a BME280 sensor which measures temperature, humidity and air pressure. After we know it works, we’ll use Wifi and MQTT to send the data to a website for viewing.
Video Tutorial: Writing code onto Micropython Wemos D1 using Ampy
February 5, 2018
Last week we covered how to flash Micropython onto an ESP8266 (Wemos D1 Mini) but we had to type our code into the REPL by hand. That’s not terribly useful for a real world project, so this week we learn how to upload code and make it run on boot. We’ll be using a tool called Ampy, by Adafruit, since the Micropython world is a little immature.
Connecting a HID Prox Pro II RFID reader to Arduino
November 23, 2016
Arduino based RFID reader projects are a dime a dozen. It’s great and wonderful how plentiful and easy they are. Checking out Adafruit or Sparkfun one can find dozens of cheap components that are almost ready to go. The common factor is that they are all 13.56Mhz or Mifare compatible. Nominally this means cheap (And plentiful) components and fobs, but it also means that the systems aren’t compatible with most professional RFID badge systems. What if you want to hook up a “professional” grade system like a HID Prox-compatible reader? Turns out it isn’t that hard either.