astuder
commented
5 years ago I played with HC-12 modules a long time ago. Here's the AliExpress link:
https://www.aliexpress.com/wholesale?SearchText=si4463
B1B is a bit unfortunate as most of my firmware reversing with radare is done with the newer C2A/A2A revisions (Si4...2A part numbers). Some of the images of the HC-12 modules show a 2A revision, but probably not guaranteed.
If there's interest, I can make breakout modules with specific chip revs available.
Thought I'd share this in case somebody else googled this project and wanted to try it out with a low overhead, as projects like these tend to add up pretty fast. This was the cheapest I was able to get the parts needed without requiring soldering/crimping.
$2.93 YJ-14005 circuit board assembly with Si4463 868Mhz $1.09 M-F JST GH 1.25mm 5-Pin , 5 Sets $4.02 (~2-4 weeks shipping included)
Ensure if you want pins you get the 868mhz Si4463 assembly. Just about every 868mhz board containing the Si4463 is a YJ-14005. Then with a nail file/sandpaper you can trim the 5 pin female side of the wire assemblies.
You can break off/remove the connector harness on the male side for use on bread boards with 2.54mm pitch holes.
The YJ-14005 board has all the pins you need for spi to the arduino/raspberry pi/ti launchpad. My chip is the Si44631B manufactured in March, 2017
If you want to attempt some type of wrapping, getting the 433Mhz HC-12 boards with through-holes is another option. They cost about $3.50 Also you can use AliBaba/Taobao(banggood) they often can shave off another 10% if you can find what you are looking for, ~but I didn't really see anything when I looked.~
As pointed out below there seems available package with standard 2.54 pitch pins or at least it looks that way in the image, and it is $3.65. It is still the Si4463 B1B version though, but should be much easier to use with breadboard jumper wires. The pins are not labeled but it shouldn't be that difficult to trace.