CM108 has a set of four GPIOs that can be used via hidraw. These can be read from or write to.
Flir C2 thermal imaging of SA818 radio node
Today I did some thermal measurements with my Flir C2.
Raspberry Pi compatible, SA818 radio node
My new radio node that I designed last month is back from production at jlcpcb. Designed in Romania and built in China 😁. This is my first attempt using jlcpcb for the entire manufacturing chain, from PCB creation to part selection and assembly.
New radio node
Today I finalzied the designed for my new Raspberry Pi Zero-based radio node. Designed around SA818 and CM108B sound codec, will replace my old dead-bug style radio node that I used for so many years.
A Si5351 DIY oscillator project
I have some Si5351 chips that I never used for any projects. I purchased them from Mouser, I believe for an APRS project, long-standing and overdue. That APRS project I started some time ago but I never completed and maybe I should strongly consider to complete. But this is another topic.
AT1846S QFN 32 — Did I solder it correctly ?
RDA1846, the transceiver inside Baofeng UV-5R, Yaesu FT-4XR, SA818 and other radios is no longer manufactured. There are equivalent chips that can be used.