Bit Blaster
Dual-band CC1101 sub-GHz radio for the LilyGO T-LoRa Pager.
A TI CC1101 sub-GHz transceiver board that plugs straight into the LilyGO T-LoRa Pager's expansion header, with separate antenna ports for the low and high bands.
Overview
The WX-1 adds a Texas Instruments CC1101 sub-GHz radio to the LilyGO T-LoRa Pager. It mounts on the pager's 2×6 expansion header, runs from the pager's 3.3 V rail, and talks to the pager's ESP32-S3 over SPI.
Two independent RF matching networks feed two SMA connectors: one for the 315/433 MHz bands and one for 868/915 MHz. A 1×4 breakout exposes the radio's GDO0 and GDO2 signals for debugging.
Revision E is the fifth spin of the board. It was rebuilt from a schematic with every CC1101 pin verified against TI's datasheet, and it worked on first power-up when it arrived on the bench.
Build log SUCCESS! The WX-1E works!
Specs
| Radio | TI CC1101 (QFN-20) |
|---|---|
| Bands | 315/433 MHz and 868/915 MHz |
| Antennas | 2 × SMA, one per band |
| Reference clock | 26 MHz crystal |
| Host interface | SPI + GDO0 via the T-LoRa Pager 2×6 expansion header |
| Debug | 1×4 header with GDO0 / GDO2 |
| Power | 3.3 V from the host |
| Compatible host | LilyGO T-LoRa Pager |