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The FrSky 2.4GHz RXSR-FC (OMNIBUS F4 Nano V7) uses the ICM20608 over SPI to produce stable flight performance. Integrated with the RXSR-FC receiver mounted onboard, and the ICM runs the 32k Gyro loop perfectly. Also onboard is an AB7456 OSD chip for the Betaflight OSD.
An on-board FrSky RXSR-FC receiver and 20mm x 20mm mounting holes make it perfect for a super clean micro quadcopter build. It supports 3-6S LiPo direct input and has 6 hardware UARTs and an I2C port.
SPECIFICATIONS
STM32 F405 MCU, Runs Betaflight firmware (supported from v3.2)
FrSky RXSR-FC receiver
ICM Gyro over SPI Bus
20 x 20 mm mounting holes
Supports LiPo direct plugin (3-6S)
Supports 5V 3A BEC output (Step-down)
STM32 controls OSD chip over SPI in DMA mode (Betaflight OSD)
6 UART ports
FEATURES
Tantalum Capacitors added for noiseless gyro reading
Solder pads added for SmartAudio and Camera Control (next to Video pads)
FPC port for FrSky FC receivers like the R9MM-FC / RXSR-FC receiver
PWM pads on corners
Upgraded BEC, 3A output
Article source: https://article-realm.com/article/Health-Fitness/6761-FrSky-2-4GHz-RXSR-FC-uses-the-ICM20608-over-SPI-to-produce-stable-flight-performance.html
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