X-Racer: How to Flash Firmware?
The X-Racer F303 flight controller was designed for the serious racer. We have followed the idea of simplicity and kept the basic rugged design of servo style pinouts so you do not have to worry about the fragility of plastic connectors in a crash.
This X-Racer flight controller only comes in one version...ACRO! This is not a flight controller that is designed to fit the needs of everyone, it is a flight controller designed to fit the needs of racers and free style flyers.
The X-Racer is backed by the reputation of FPV Model giving you a flight controller that you can trust.
The newest version of the X-RACER F303 is Version 3.1. We have listened to your requests for SPI and we have changed the MPU 6050 over to MPU 6000 in order to give you those faster loop times that you have been asking for. We have tried to keep the changes minimal with this and have left all of the previous changes that many requested the same. This board still comes with the through holes for Vbat, RSSI, and the buzzer. It also comes with the dedicated SBUS and RGB LED connections. X-Racer is designed for racers and acro pilots so we keep the design simple and durable. Have fun with it!
Differences Between V2.1 and V3.1: X-Racer V2.1 uses MPU6050 with I2C & spRacingf3 firmware. V3.1 uses MPU6000 with SPI & X_RACERSPI firmware. We are now selling the V2.1 at a extremely low price of $18.19. Do not let the price fool you, both V3.1 and V2.1 are backed by FPVModels reputation. The price for V2.1 is so cheap that you can pick up a second FC for backup.
Attention: The X-Racer v3.1 is an updated design using a new gyro and it no longer uses the SPRACINGF3 firmware. Firmware for the X-racer V3 "X_RACERSPI" is on Betaflight and it is DSHOT compatible.
The X-Racer flight controller runs on the open source Cleanflight software and its compatible with the Boris B. Betaflight firmware. The hex file to use is spracingf3 hex (V2.1) / X_RACERSPI (V3.1).
Failure to adhere to these warnings will void your warranty and destroy your flight controller.