External Radio Module for 433 MHz aka CC1101¶
On which firmware does the module work?
The module works on all firmware, including official firmware or any other alternative firmware.
The module improves flipper operation at 433 MHz. It differs from the standard implementation inside the flipper actually only by the SMA antenna (not RP-SMA!), which is tuned to work at 433 MHz. And the chip is exactly the same, Texas Instruments CC1101.
- Base frequency 433 MHz (Usually in our latitudes use it and antennas are tuned to this band, but you can make yourself other antennas tuned for other bands and it will work on other bands)
- It is connected via GPIO to MCU/Flipper via 4-wire SPI interface (on the left is a short part of 8 pins).
- The chip works over a supply voltage range of 1.8V to 3.6V, however this module works best at 3.3V (this is solved in the modules)
Buy a ready-made module¶
- Individual Antennas & CC1101 Modules based on Genuine EBYTE CC1101 Modules
- Rabbit-Labs™ - Flux Capacitor - Amplified CC1101 is a 5v powered, External CC1101 Module based on the E07-433M20S Chipset, offering up to 100mW of power. Receive and send signals between 425-450MHz
- CC1101 shielded module for 433Mhz by ruckus // section80 in Australia
Do-it-yourself¶
You can build this module yourself, if you have a soldering iron, a solder, and the CC1101 module itself.
- External CC1101 with external SMA antenna. Everyone mostly uses this module, based on Ebyte 10dBm 530m CC1101 Rf 433MHz Fsk.
- Cables, breadboard as a AMS1117-3.3, solder.
To build a working module, follow the pinout as shown in the image below
There are also pinouts for the less popular D-SUN CC1101 and TI-CC1101 chips
Special thanks to @quen0n and this article (https://habr.com/ru/articles/795253/)[https://habr.com/ru/articles/795253/] for the pinout images1