BETAFPV G473 V2 — 1S Whoop Build Spec
Betaflight 2026.6.0-alpha
MSP API 1.48
Flight controller
| Item | Value |
|---|---|
| Board target | BETAFPVG473_V2 |
| Manufacturer ID | BEFH |
| MCU | STM32G474, 168 MHz (PLLR-HSE) |
| Gyro / accelerometer | ICM42622P (SPI, DMA, locked) |
| OSD | MAX7456, 30 × 13 characters |
| Onboard flash | 16 MB SPI (JEDEC 0x00852018) — used for blackbox |
| Detected buses | SPI × 1, I²C × 0 |
| Power | 1S |
Reported gyro rate in normal operation is ~8 kHz with a cycle time around 123–128 µs and roughly 47% CPU load.
Firmware
Betaflight / STM32G47X (G473) 2026.6.0-alpha
MSP API: 1.48This is an alpha build. Most MSP binary reads do not respond on it — see
Driving Betaflight from Claude Code for the specific
message IDs that time out and why CLI text is the reliable transport here.
What is not on this board
No GPS, no magnetometer, no barometer detected. This matters in two places:
- GPS Rescue is unavailable, so failsafe is a drop-or-land decision only.
- Blackbox logs contain no location data, which is why they are safe to share or discuss openly. A GPS-equipped craft would need home-point coordinates scrubbed before any log left the machine.
Known sensor issue
The current sensor on this board reports implausible values — see the
flight log entry for a 1320 A reading that is an
ADC scaling artifact rather than a real event. Treat amperage columns in the blackbox
data as untrustworthy until ibata_scale and ibata_offset are recalibrated.