Sensors and Micro-Controllers Wiki

A wiki to cover various topics of how to set up and run real world sensor projects.

Micro controllers

  • Arduino Mega
  • Arduino Uno
  • Arduino Nano
  • ESP32 (Arduino compatible microcontroller with WiFi + BLE)
  • ESP8266 (Arduino compatible microcontroller with WiFi)


Discrete devices/modules etc. operated by/from programmable devices like microcontrollers, Raspberry Pi’s etc.


  • STM32 - GPS sensor
  • BM280 - temperature, humidity & pressure
  • DHT11 - temperature, humidity
  • HC-SR04 - ultrasonic distance sensors
  • KY-037 microphone
  • Piezoelectric vibration sensor
  • HC-SR501 - radar motion detector
  • IR object detector
  • KY003 hall sensors
  • MPU 9250 9 axis accelerometer and compass
  • Capacitive Soil Moisture Sensor
  • OV2640 camera (as included on the ESP32cam module)

Actuators (and actuator controllers)

Devices that cause physical movement.

  • PCA-9685 servo controller
  • L298 H-bridge motor controller


Methods and kit used for transmission between devices and the outside world

  • Bluetooth Low Energy (BLE)
  • WIFI
  • Lora
  • RF433
    • HC12 rf 433 communication
  • RS485 wired connection
  • Infrared transceivers


  • LM358 opamp


Power sources, power electronics and power management.

  • Li-po Batteries
  • Li-ion Batteries
  • NiCad Batteries
  • Solar
  • Deep sleep and power conservation

Data Backends

(I have some basic/high-level research on IoT data storage options that needs writing up, collated from old stuff and a look around at current options - some free, some paid, some restricted to certain protocols and things in various states of ready to roll vs. needs some dev - it’s pretty much raw links at the moment, with some notes - needs reorganising, checking through and categorising properly)


Data Visualisation/Presentation

There’s a comparison here between ESP32 and ESP8266, two microcontrollers often used in battery-powered network nodes. Could be other useful posts nearby.

Interesting device for power management/deep sleep:

1 Like