Prototypes examples – most probably on a breadboard and the required software (parts) for it. Here I break down single parts of bigger projects to reuse them when building a combination of them.
This covers a very configurable and more complex variant of measuring brightness and turning on LEDs.If you are looking for a more basic variant: It all began with a LDR and curiosity. The result is a night light for a ESP8266 like D1 Mini or Raspberry Pi Pico (W) which compensates darkness with many configurable…
This is a continuation of Is it dark yet ? – Measuring brightness with LDR on Pi Pico (W) and ESP8266 (D1 Mini & NodeMCU v3) in MicroPython, but concentrating on a fast and clean code rather than how to use a LDR with MicroControllers in principle. What you need: D1 mini or a similar…
Materials you need for this: LDRs (I am using 5528), breadboard, jumper wires, resistor (I used 56k) and a 5V power supply. The MicroPython code has been written for and tested on Pi Pico, Pi Pico W, D1 Mini and NodeMCU v3 ESP8266 .I bought it at berrybase.de and az-delivery.de (not referral links). The microcontrollers…
a.k.a. longest post title ever 😛 This is the Python code for a NodeMCU v3 running MicroPython 1.19.1. It will measure temperature and humidity at the connected DHT22 with breakout board every 30 seconds, connect to WiFi and publish to a MQTT server.The first code block will be the necessary as simple and clear as…
My first NodeMCU v3 board. Connected a DHT22 (includes PCB with breakout board) to 3V, ground and data pin to D1 (which is Pin 5). Kept Python code for measuring loop as simple as possible. You will find a fitting pinout at RandomNerdTutorials. This code measures the temperature and humidity every 30 seconds and prints…
Jump to: Pico – D1 mini – Pi Zero Raspberry Pico A short Python implementation of a magnetic switch turning on a LED when it is not connected (e.g. window is opened). For simplicity reasons I used the builtin LED on the Pico. You have to use the pull=Pin.PULL_DOWN parameter for the input pin (sensor)….
A small helper at night and a nice little excercise on the Pico: an LED that lights up when it is dark and something moves. I used a HC-SR501 as motion sensor, light sensor with digital output, a yellow LED of my Pico project complete kit (330 Ohm resistor with it) and of course the…