Tag: esp32

Cdycam 3pcs/1bag PoE Splitter Power Over Ethernet 48V to 12V IEEE802.3af Standard Type 15W Power Supply Module For NonPoe Camera (WHL #119)

Here’s something that lasted just shy of five years – a PoE to 12V converter.

I just checked, I never wrote about these things…so here we go. Last week, the ESP32 in my living room stopped working. It does serve as a sensor station (temperature, humidity) for the DECT heater valve in the living room, and it also runs some LED stripes around the house, some of which are automated via iobroker, and some are activated by infrared sensors. They all can be changed over a simple web interface as well. Turns out: The ESP is fine, but the power supply, a PoE to 12V converter, is dead. […]

7th June 2026 7th June 2026 By Bzzz In No Comment

Sensirion SGP30 and Bosch BME280 air sensors (WHL #64)

Small air sensor modules for today!

The Bosch BME280 has been in use on my ESP modules across the apartment since I discarded the unreliable DHT sensors, DHT22 in my case. It’s a combined temperature-pressure-humidity sensor, contrary to the much cheaper BMP280 or the predecessor BMP180, which lack the humidity part (pretty much vital indoors, while pressure is just a gimmick). They are sold in many similar versions, I’ve always picked the GY-BME280 module in 3.3V flavour (“GYBMEP”), as the sensor can be operated from 1.71V to 3.6V which is handy for different MCUs. […]

4th April 2021 4th April 2021 By Bzzz In No Comment

ESP32 hardware faders (#P27)

Maybe my google-fu is rusty, or there’s simply no full example of this on the Interwebs…that’s pretty strange.

This is about the cherished ESP32 that will feature an extension/replacement of my #P7 series. This was an ESP8266 board that replaced a dumb lighting control, offering sensor logging to a database. I quickly found out that the limited pin count (and quirks) of the ESP8266 would require me to think about e.g. shift register extensions to make the entire project viable – which now got replaced with the large ESP32 that does have all the flexibility that I need. […]

12th July 2020 13th July 2020 By Bzzz In No Comment