Hardware Setup

Hardware setup

List of parts

Hot Air Soldering Gun

USB TTL adapter
NodeMCU or Wemos D1 Mini
ULN2003 Stepper Controller
28BYJ-48 5V Stepper Motor
BH1750 Light Sensor (with Lens)
Jumper cables

Connections for v2.x.x

• I2C bus pins for BH1750 Light Sensor on ESP12E/F boards are GPIO5 - SCL and GPIO4 - SDA. If you are using Wemos D1 mini, I2C pins are SCL - D1 and SDA - D2!

• This sensor also has an option for resetting to factory default. Long pressing for 10 seconds a button connected to GPIO0 and GND will reset the ESP!

Schematic

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