A simple pcb on which you can connect 4 sensors to the 4 gpio pins, also it has a voltage stabilizer which can take up to 30V (so you can safely power it up from 5,12,24V source)
The board has 4 pin headers (3 pins) with Signal, 3.3v, GND, each signal is connected to a GPIO pin (0,1,2,3) of the esp-01, so they can be used for reading sensors values.
- each pin has a pull up resistor
- 3.3 Voltage stabilizer
- capacitor for voltage fluctuations
- power indicator LED
The board was tested with DHT22, DHT11, DS18B20, but is should work with any digital sensor working on 3.3V.
Here are some repositories you can check out for using with this board.
You can see the fusion360 model here : https://a360.co/2FeM3dN you can download it and test it in your own context if you have to, this is very usefull if you want to use it in a box, or just to see how it looks in real life.
If you want more info feel free to leave me a message !