https://github.com/jcarrano/flyx5-avionics

https://github.com/jcarrano/flyx5-avionics

arm flight-controller gyroscope hardware pcb stellaris tiva uav

Last synced: 4 months ago
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• Host: GitHub
• URL: https://github.com/jcarrano/flyx5-avionics
• Owner: jcarrano
• Created: 2017-06-19T06:06:27.000Z (almost 9 years ago)
• Default Branch: master
• Last Pushed: 2017-06-22T17:46:36.000Z (almost 9 years ago)
• Last Synced: 2025-02-01T20:11:35.774Z (about 1 year ago)
• Topics: arm, flight-controller, gyroscope, hardware, pcb, stellaris, tiva, uav
• Language: HTML
• Size: 3.36 MB
• Stars: 1
• Watchers: 2
• Forks: 1
• Open Issues: 0
• Metadata Files:
  • Readme: README.md

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README

          
# FlyX5 Hardware #

This is the circuit board for the FlyX5 UAV controller.

See [here](https://github.com/jcarrano/flyx5-pilot) for the firmware that runs on the controller board.

![FlyX5 Revision 0 Board](images/DSC06301.JPG?raw=true "Manufactured board")

## Main board: flx_control ##

* Flight Stabilization and control.

* Tested. Works (except for errata listed below).

Features:

* Compact size: 54.5mm x 45.2mm

* Builtin buck converter: can be powered directly by batteries and provides 5V up to 1A.

* 3 Leds, 3 Buttons (2 programmable + reset).

* Microprocessor: TI Tiva-C (ARM M4F) with hardware floating point support.

* Supports up to 8 ESC. ESC ports can be configured as PWM or SPI.

* Radio-control port: 6 channels PWM input. Can be reconfigured as up to 3 duplex serial ports.

* Dedicated Serial Port.

* 2 Analog sense ports for battery sensing.

* Buzzer (with melodies)

* SD card slot.

* Expansion port (SPI+Power+2GPIO). Matches the pinout of a NRF2404+ module

* Gyro+Accelerometer: Invensense MPU-6500

* Magnetometer: Freescale MAG3110

* Altimeter: Freescale MPL3115A2

* Port for connecting ultrasonic ranger.

![3D rendering of PCB](images/top3d-2.png?raw=true "3D rendering of PCB")

Debugging and tinkering:

* JTAG port (can be programmed (and debugged) with a Tiva-C eval board and OpenOCD, no fancy HW required)

* Way too many testpoints.

### Errata ###

* On the first version, SDA and SCL lines for one I2C bus were reversed.

* The buzzer driver circuit is designed for magnetic buzzers. For piezo buzzers it requires a pull resistor. Newer versions should include a push-pull driver instead.

* The MCU has an errata, which has been worked around both in SW and HW.

## ESC controller board: flx_esc ##

SUPER experimental.

Features:

* Digital control via SPI: no more trimming/calibrating the PWM

* SPI allows reporting current motor speed (along with other parameters) back to control board.

* Uses a crystal for timing: no trimming or calibrating time.

* Processor: Kinetis KE02 (ARM M0+) allows for more advanced calculations (for example square root compensation for directly controlling thrust instead of speed)