SunFounder ESP32 Starter Kit
Name ITEMS IN THIS KIT LINK
ESP32 Starter Kit 320+
You can also buy them separately from the links below.
COMPONENT INTRODUCTION PURCHASE LINK
ESP32 WROOM 32E
ESP32 Camera Extension -
Jumper Wires
Ultrasonic Module
Available Pins
• Available Pins
Here is a list of available pins on the ESP32 board for this project.
For Input IO13, IO14, IO27, IO26, IO25, IO33, IO32, I35, I34, I39, I36, IO4, IO18,
IO19, IO21, IO22, IO23
For Output IO13, IO12, IO14, IO27, IO26, IO25, IO33, IO32, IO15, IO2, IO0, IO4, IO5,
IO18, IO19, IO21, IO22, IO23
Schematic
The ESP32 sends a set of square wave signals to the Trig pin of the ultrasonic sensor every 10 seconds. This prompts
the ultrasonic sensor to emit a 40kHz ultrasound signal outward. If there is an obstacle in front, the ultrasound waves
396 Chapter 3. For MicroPython User
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