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Waveshare RP2040-Lora adventure

  • Post date 2026-01-28
  • Categories Projects
I have for quite some time now been thinking about measuring the water temperature in Lake Vättern. One step on the way was the temperature sensor in the much smaller lake Rocksjön that's located in Jönköping. That was back in 2013-12 years ago-and I have not done anything since then relating to LoRaWAN and temperature sensing. But this summer, I got [...]

Success with ESP32 Mesh

  • Post date 2026-01-19
  • Categories Projects
As previously mentioned I did som exploration of ESP32 mesh functionality and RGB leds for a project involving the local maker space where i failed to force mesh node status. After I gave up on that idea I managed to create som fun stuffs with the LEDs instead. The code is available here First iteration was to just have the LED blink in a chosen [...]

Problems with Forced Mesh Node Status in ESP-IDF

  • Post date 2026-01-03
  • Categories Random
The local makerspace has a project for an upcoming light parade that will be held in the old ex-industrial area where we have our space. The idea is to have a bunch of ESP32 devices meshed together with RGB LEDs creating synchronized effects across the parade route. To make this work, I needed some nodes to always be root nodes (connected to the [...]