JJ Underwood
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jj-underwood.bsky.social
JJ Underwood
@jj-underwood.bsky.social
6 followers 6 following 5 posts
X: https://x.com/jj_underw00d
Medium: https://medium.com/@jj.underwood
GitHub: https://github.com/jj-underwood
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jj-underwood.bsky.social
I built a working replica of HAL 9000 with ESPHome and Home Assistant.

#hal9000 #esphome #homeassistant #iot #smarthome #esp32

medium.com/@jj.underwoo...
Building HAL 9000 Smart Home Device
How I turned a HAL 9000 plastic model into All-in-One Smart Home device with ESPHome and Home Assistant.
medium.com
May 16, 2025 at 4:56 PM
jj-underwood.bsky.social
I tried to build my second version of DIY All-in-One Environment Monitor with ESP32 and my custom PCB board. Although the result was a little bit disappointing, I decided to share my story.

#esphome #homeassistant #easyeda #jlcpcb #pcb #iot #smarthome #diy

medium.com/@jj.underwoo...
DIY All-in-One Environment Monitor V2
My failed trial to upgrade ESPHome based all-in-one environment monitoring.
medium.com
April 8, 2025 at 10:46 PM
jj-underwood.bsky.social
Let’s find a “box” for your next DIY smart home project.

Comparing Enclosures for Smart Home Projects medium.com/@jj.underwoo...
Comparing Enclosures for Smart Home Projects
Finding enclosures for ESP8266/ESP32 and sensors.
medium.com
January 10, 2025 at 7:22 PM
jj-underwood.bsky.social
Complete guide to create ESPHome based all-in-one environment monitor to measure temperature, humidity, pressure, CO2, VOC, NOx, PM, illuminance, UV and human presence all over the house.

#esphome, #homeassistant, #home_assistant, #iot, #adafruit, #sparkfun, #sensirion

medium.com/@jj.underwoo...
DIY Environment Monitor
Complete guide to builde ESPHome based all-in-one sensor node to monitor temperature, humidity, pressure, air quality, presence, light.
medium.com
December 19, 2024 at 10:17 PM
jj-underwood.bsky.social
How to collect data from car to ESPHome based ESP32 board with OBD2 adapter over BLE, send data to AWS with MQTT over cellular network and use data on Home Assistant at home.

#esphome #esp32 #obd2 #car #automotive #aws #iot #homeassistant #home_assistant

medium.com/@jj.underwoo...
Sending Car Data from ESP32 to AWS IoT and Home Assistant
How to collect data from a car to an ESP32 over BLE, send them to AWS IoT over cellular network, and use them on Home Assistant at home.
medium.com
December 18, 2024 at 10:39 PM