tin-box/ble_temp_monitor

Arduino Temperature monitor that uses BLE to share data

BLE_Temp_monitor

Arduino Temperature monitor that uses BLE to share data

WiFi Mesh Temperature Monitor

Introduction

I wrote this to make an array of low cost, low power temperature sensors that can cover a large area by linking together through a WiFi Mesh approach. Nodes connect to nodes with the strongest signal and relay data through the mesh so that each node has the temp and humidity data of all other nodes. If a temperature exceeds a configured limit a buzzer in that Node as well as the Buzzer in Node 0 will sound.

I worked this until I had a working version and then iterated a few versions fixing obvious bugs and then shelved it. Feel free to build on what I have done and extend it for other purposes. Have Fun!

Software/Firmware

See the Setup section below for instructions to get his running. I have built it with both Arduino package as well as VS Code successfully. To configure WiFi access password Node number and related item make changes in the Config.h file.

Setup

Getting started with ESP-IDF on IDE Arduino

1.      Install Arduino IDE

Download and install the Arduino IDE for your PC platform

https://www.arduino.cc/en/software

2.      Configure Arduino preferences with Espressif IDE package

In the “Additional Boards Manager URLs:” box enter https://dl.espressif.com/dl/package_esp32_index.json

3.      Install ESP32 in Arduino Manager

Search for ESP32

Select install

4.      Install Libraries in Arduino library tree

5.      Open Temp sensor source code

Edit Config.h file SENSOR_NUMBER  such that Main node = 0, Sensor1 = 1, Sensor2 = 2 etc.

6.      Select ESP32 board COM port

7.      Compile and Flash software onto ESP32 board

Bill of Materials

Part No	Description	Qty
esp32-1.14lcdttgo-001	1.14 Inch LCD ESP32 WiFi And Bluetooth Module	7
aht10-i2c-001	AHT10 Digital Temperature Sensor Module I2C	7
90db_dc3-24v-001	Active Piezo Buzzer 90 db 2-Wire DC 3-24V	7
usb6ft-001	USB Type-C Cable 6ft type C to A Cable braided - grey	7
pwr1a5v-001	USB Charger Adapter 1A/5V Single Port - black	7
nylon-2mm-5.6mm-001	Push Clip Rivet 2mm x 5.6mm PCB Circuit Panel Nylon Fastener - Black	28
esp32tdbtm-001	ESP32 TDisplay Bottom	7
esp32tdtop-001	ESP32 TDisplay Top_Tall	7