IoT

Radon Radon is everywhere, see map Naturally-occurring radioactive gas - causes lung cancer Inert, colorless and odorless Naturally in the atmosphere in trace amounts Outdoors: radon disperses rapidly Most radon exposure occurs inside homes, schools and workplaces Indoors: Radon gas becomes trapped indoors after it enters buildings through cracks and other holes in the foundation Can be controlled and managed with proven, cost-effective techniques Radon monitoring Hardware Airthings Wave Continuous radon monitoring Long term monitoring LEDs color – radon level Battery Operated Bluetooth BLE ESP32 - lolin D32 (can use any ESP32) MQTT Server - Mosquitto Software Python script to read values from Airthings Wave: Wave-Reader Home Assistant Custom Component: sensor....

Instead of sending data to services in the cloud, here we send sensor data to local InfluxDB database. Grafana is used to read data from InfluxDB and alert thresholds are set to send reactive alerts. InfluxDB Download and Installation: official docs Docker Download and Installation: official docs ESP32 connecting to WPA2-Enterprise Hardware ESP32 TTGo T-Energy SSD1306 OLED display BME280 sensor Software Dependencies Listed below are the dpendencies used by Arduino IDE, but use PlatformIO instead!...

Walkthrough of minimal settings for ESP32 to connect to WPA2-Enterprise WiFi at University of Michigan (eduroam) GitHub: debsahu/Esp32_EduWiFi Minimal settings for ESP32 to connect to University of Michigan WiFi (MWireless/eduroam) MSetup Go to MSetup Log in using University of Michigan credentials Select Other Device and log in again if needed Enter Device Name, MAC Address, uniqname will already be selected, Advanced Options > Network Type > Internet Access After above settings are enterd, click on Register my device...

Permanent holiday lights hardware and software setup using NeoPixels/WS2812B LEDs Hardware LEDs: https://amzn.to/2Lu4m3P Aluminum Channels: https://amzn.to/2Knajio 18/2 wire: https://amzn.to/348I1zq 18/3 wire: https://amzn.to/37YNCJM Control Box: https://amzn.to/2KjfakW 5v 60A Power Supply: https://amzn.to/2KmRHiu 25ft extension cord: https://amzn.to/3840RIS Wire nuts: https://amzn.to/3oO1Vrb BME280(optional): https://amzn.to/3p15pHd PCB: https://github.com/toblum/McLighting/tree/master/documentation/pcb Software WELD - GitHub: Aircoookie/WLED WLED User-mod for BME/P 280:

Board Prep WLED Software: GitHub: Aircoookie/WLED PCB: https://github.com/toblum/McLighting/tree/master/documentation/pcb

WLED Software: GitHub: Aircoookie/WLED PCB: https://github.com/toblum/McLighting/tree/master/documentation/pcb

Using ESPHome for connecting ESP8266 to MAX7219 Dot-Matrix Display to show useful information from Home Assistant. This is used by my wife’s channel Canvasyvibes Art Software: ESPHome

Install of Biobidet Bliss BB200 and connecting it to Home-Assistant. Wilbur Sargunaraj Software: ESPHome

Here we use ESP32 microcontroller to analyze real-time audio signals Real-time FFT to get frequencies Use MSGEQ7 chip to get the same data Display frequency bands on LEDs as bars FFT basics: GitHub: debsahu/ESP32_FFT_Audio_LEDs Libraries Needed Software FFT platformio.ini and Hardware FFT platformio.ini is included, use PlatformIO and it will take care of installing the following libraries. Library Link arduinoFFT https://github.com/kosme/arduinoFFT WS2812FX https://github.com/kitesurfer1404/WS2812FX MD_MSGEQ7 https://github.com/debsahu/MD_MSGEQ7 Known Limitations Sampling frequency must be high Sampling time should not interfere with other WiFi functions FFT calculations are CPU intensive Frequency binning needs to be done manually Wiring

Home Assistant Switch for 8 Relays: PCF8574 can be used to extend the GPIO of ESP8266/32 and here we use 8 ports of PCF8574 to control 8 Relay module GitHub: debsahu/PCF8574_8Relay Home Assistant Switch for 8 Relays Code can compile on ESP8266/32 PCF8574 can be used to extend the GPIO of ESP8266/32 8 ports of PCF8574 is connected to 8 Relay module Libraries Needed platformio.ini is included, use PlatformIO and it will take care of installing the following libraries....