spectrum_analyzer

Spectrum analysis with RFM12B

The comments to my┬álast blog post got me thinking if I had chosen the right RFM channel at home, obviously if the channel is noisy that directly affects reception and increases the error rates. I use the default 868Mhz setting for the RFM12B/RFM69s at home and┬ádecided to check if the channel is clear from other…

The Tiny Sensor gets a SD card port

I had some space left on the TinySensor v1.0 PCB, plus I left myself few days to think before ordering the first batch, so I decided to throw in a SD card port. I didn’t want it to be anything fancy like the impossible to solder SMT card slots, so I decided to go for…

Single sided ATtiny84 temperature sensor PCB

Following the fiasco with the first version of the PCB, I have decided to create a single sided PCB so that the DIP socket that was causing me trouble is on the top. Here are the results, the PCB works great and the temperature is being sent every 60 seconds using the DS18B20 sketch. Page…