2023-02-10

Fun with BLE and a hot tub

I have found some rather nice little BLE temperature sensors with 5 year life, and waterproof.

Obviously the first thing to do it put one in the hot tub :-)

Of course I need something to receive this, and these are actually nice and send a proper temperature reading in the BLE advertisement every few seconds. So time to make some code for ESP32.

The problem is water and radio to not work well, so I actually need to put it close to the hot tub.


So this is the ESP32 gateway - it is one of the smallest boards I have made, and designed to go directly in to a USB socket.

And now I have a garden BLE/WiFi gateway :-)

at
Labels: , , ,

No comments:

Post a Comment

Comments are moderated purely to filter out obvious spam, but it means they may not show immediately.

Subscribe to: Post Comments (Atom)

The power of eSIMs

I was always skeptical of eSIMs. The idea you have a mobile identity in a physical SIM that you control seems a sensible approach. An eSIM i...

  • It's official, ADSL works over wet string
    Broadband services are a wonderful innovation of our time, using multiple frequency  bands  (hence the name) to carry signals over wires (us...
  • Air conditioning at home (planning permission!)
    For many years I used a small stand-alone air-conditioning unit in my study (the box room in the house) and I even had a hole in the wall fo...
  • EICAR test QR
    It seems there is something of a standard test string for anti virus ( wikipedia has more on this). The idea is that systems that look fo...