IoT

A LoRa PingPong for the STM32WLE5 (LoRa-E5 Part 4)

Reading Analog Data in Zephyr with a nrf52840

It turned out to be much harder to read the ADC in Zephyr than I expected. As…

Long Range Embedded Systems

Very recently we’ve had a proliferation of small cpus with Long Range transceivers that fit into a chip socket. I need one for an application so wanted to compare their RF and other capabilities.

Getting the Sainsmart 2in1 Motor Controller Running

The Sainsmart 2in1 is a Mega2560-based motor controller with on-board pluggable motor drivers. As usual the documentation is slim to none and it didn’t really work out of the box as far as I could tell.

The Room Controller : Software

The Photon Software is straightforward.

During setup it tries to figure out a few things. Which board rev — if there is a thermistor on A0 it’s a new V2 board. Which thermistors are connected — disconnected ports will read high due to the pullups…

House: The Conclusion

After waiting literally 20 years for technology to catch up with my smart home design I have what I believe is a good solution.

Note, by the way, that these use no batteries. Power busses run in the basement and attic to each room. Motion sensors are powered from…