https://github.com/newam/ambientsensor

Ambient Environment Sensor for Home Assistant
https://github.com/newam/ambientsensor

freertos home-assistant home-automation humidity ieee-802-3af luminosity mqtt pressure stm32 temperature

Last synced: 3 months ago
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Ambient Environment Sensor for Home Assistant

• Host: GitHub
• URL: https://github.com/newam/ambientsensor
• Owner: newAM
• License: mit
• Created: 2019-06-01T22:34:08.000Z (about 6 years ago)
• Default Branch: master
• Last Pushed: 2019-06-01T23:01:21.000Z (about 6 years ago)
• Last Synced: 2025-04-13T13:16:04.562Z (3 months ago)
• Topics: freertos, home-assistant, home-automation, humidity, ieee-802-3af, luminosity, mqtt, pressure, stm32, temperature
• Language: C
• Size: 16.2 MB
• Stars: 6
• Watchers: 2
• Forks: 2
• Open Issues: 0
• Metadata Files:
  • Readme: readme.md
  • License: license.md

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README

        
## Ambient Sensor

### What is it?

This project is a ambient environment sensor that gathers the luminosity, temperature, humidity, and pressure.  This data is transmitted in real time to my Home Assistant server via MQTT over Ethernet.

### Why?

I wanted to explore real-time adjustments of lighting, and window coverings to maintain constant light levels in a room, which requires high sample rates (multiple samples per second) for responsive adjustments.

When I started this project there were no high-sample rate luminosity sensors for home automation.  The devices that did exist either had low sample rates (minutes vs milliseconds), or were designed for scientific applications.

![v1_front_800](AmbientSensor_Media/v1_front_800.jpg)

![home_assistant_card](AmbientSensor_Media/home_assistant_card.png)

### Project Contents

* AmbientSensor_Code - firmware source code

* AmbientSensor_HomeAssisant - sample configuration for use with HomeAssistant

* AmbientSensor_KiCAD - schematic and PCB

* AmbientSensor_Peripheral - schematic and PCB for peripheral sensors

* AmbientSensor_Media - photos

### Prototype and Design

See [prototyping.md](prototyping.md) for the prototyping and design process.

### Software Used

* KiCAD 5.0.2

* GNU Make 4.1

* GNU gdb (GNU Tools for Arm Embedded Processors 7-2018-q3-update) 8.1.0.20180315

* GNU gcc (GNU Tools for Arm Embedded Processors 7-2018-q3-update) 7.3.1 20180622

* STM32CubeMX 5.1.0

* OpenOCD 0.10.0