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Cheap server room temperature monitoring?
5 projects | reddit.com/r/sysadmin | 10 Feb 2021
If you want to go cheap per-sensor. Here's a tutorial on using an ESP32 (microcontroller w/ wifi) w/ a BME280 (good accuracy Temp/Pressure/Humidity sensor) to push to an MQTT broker. Or if you prefer some sample code in micropython to do the same. The combined cost for both components can be as little as $10 depending on the knock off on amazon. Or ~$30 for legit items from Adafruit.
Using a rechargeable drill battery to power LED strips for closet lighting?
1 project | reddit.com/r/batteries | 17 Jan 2022
Bonus: I'd like to add in an ESP8266 chip like a wemos D1 mini using ESPHome (https://esphome.io/) to connect the whole thing to my Home Assistant, but that's really not necessary.
I got my dongle connected to wifi, how to I do anything with it?
2 projects | reddit.com/r/Esphome | 16 Jan 2022
Non-product Plug-in recommendation?
2 projects | reddit.com/r/homebridge | 15 Jan 2022
In my case, I am using a button wired to an ESP-01S microcontroller board instead of something like a Flic button or Aqara switch. I generated firmware for the ESP-01S using ESPHome.
Coin operated Ceiling train
2 projects | reddit.com/r/modeltrains | 11 Jan 2022
I’ve recently been building a lot of things with little esp32 microcontrollers running tasmota or ESPhome. It’s really easy and can be really point and click with HA integration.
esp32 with RFID reader
1 project | reddit.com/r/esp32 | 11 Jan 2022
See https://esphome.io/ with https://esphome.io/components/binary_sensor/rc522.html being one example.
RaspberryPI4 vs Arduino?
1 project | reddit.com/r/homeautomation | 10 Jan 2022
Others have suggested Home Assistant. That will run on a Raspberry Pi 4 and would be an excellent starting point. For building your own sensors, take a look at https://esphome.io/ - this works with Home Assistant and allows you to build your own sensors (and output devices) using the inexpensive NodeMCU Esp8266 modules.
1 project | reddit.com/r/linuxmemes | 4 Jan 2022
If you want to go custom wireless i really would recomend to take a look at esphome. Some of those tuya abominations are also flashable with custom firmware to make them local.
Open source hot tub controller project
2 projects | reddit.com/r/esp32 | 30 Dec 2021
Also, time to consider integrating it into ESPHome so the hot tub is just one more Home Assistant enabled devices...
Thoughts on moving from hodgepodge SaaS IoT to all Zigbee/Zwave?
3 projects | reddit.com/r/homeautomation | 17 Dec 2021
ESPHome for mostly cheap sensors
5 projects | reddit.com/r/selfhosted | 17 Dec 2021
ESPhome and ESPurna are two alternative firmwares but I don't have any experience with them.
What are some alternatives?
ESP-Now - ESP-Now Examples
tuya-convert - A collection of scripts to flash Tuya IoT devices to alternative firmwares
esp-homekit - Apple HomeKit accessory server library for ESP-OPEN-RTOS
Tasmota - Alternative firmware for ESP8266 with easy configuration using webUI, OTA updates, automation using timers or rules, expandability and entirely local control over MQTT, HTTP, Serial or KNX. Full documentation at
openhab-distro - The binary distribution of openHAB
fingerprint-mqtt - Fingerprint sensor with MQTT support based on Adafruit Fingerprint Sensor Library
esp8266_milight_hub - Replacement for a Milight/LimitlessLED hub hosted on an ESP8266
IRremoteESP8266 - Infrared remote library for ESP8266/ESP32: send and receive infrared signals with multiple protocols. Based on: https://github.com/shirriff/Arduino-IRremote/
hassio-zigbee2mqtt - Hass.io add-on for zigbee2mqtt
ESPresense - An ESP32 based presence detection node for use with the Home Assistant mqtt_room component for localized device presence detection.
ESP8266-HTTP-IR-Blaster - ESP8266 Compatible IR Blaster that accepts HTTP commands for use with services like Amazon Echo
micropython-nanoweb - Full async Micropython web server with small memory footprint.