Project Description

This project demonstrates the basics of interfacing with the SW180 tilt sensor.

What are the HW SW requirements of the ESP32 MJD Starter Kit?

Hardware

• A decent ESP development board. I suggest to buy a popular development board with good technical documentation and a significant user base. Examples: Adafruit HUZZAH32, Espressif ESP32-DevKitC, Pycom WiPy, Wemos D32.
• The peripherals that are used in the project. @tip The README of each component contains a section "Shop Products". @example A Bosch BME280 meteo sensor breakout board.

Software: ESP-IDF v3.2

• A working installation of the Espressif ESP-IDF V3.2 development framework** (detailed instructions @ http://esp-idf.readthedocs.io/en/latest/get-started/index.html).

mkdir ~/esp
cd    ~/esp
git clone -b v3.3 --recursive https://github.com/espressif/esp-idf.git esp-idf-v3.2

• A C language editor or the Eclipse IDE CDT (instructions also @ http://esp-idf.readthedocs.io/en/latest/get-started/index.html).

Instructions

1. GPIO-MUX: the input pin GPIO_NUM_SENSOR is looped back to the output pin GPIO_NUM_LED so this is wired by software, not by cables :)

2. Sensor SW-180 @logic pinvalue=1 no tilt | pinvalue=0 yes tilt

@wiring ​ Connect pin 1 (left) of the sensor to DATA ​ Connect pin 2 (middle) of the sensor to GND ​ Connect pin 3 (right) of the sensor to VCC

@configure ​ Use GPIO_PULLUP_ENABLE in gpio_config() XOR Connect a 10K resistor from DATA pin to POWER pin.

Running the example

• Run make menuconfig and modify for example the GPIO PIN# that you want to use.
• Run make flash monitor to build and upload the example to your board and connect to its serial terminal.

Reference: the ESP32 MJD Starter Kit SDK

Do you also want to create innovative IoT projects that use the ESP32 chip, or ESP32-based modules, of the popular company Espressif? Well, I did and still do. And I hope you do too.

The objective of this well documented Starter Kit is to accelerate the development of your IoT projects for ESP32 hardware using the ESP-IDF framework from Espressif and get inspired what kind of apps you can build for ESP32 using various hardware modules.

Go to https://github.com/pantaluna/esp32-mjd-starter-kit