EAGLE A3 aeroplane flight controller internals

The Eagle A3 (PRO) micro flight controller from www.hobbyeagle.com (also available as ‘Hobbyking i86AP flight Stabilization Control Board’) stabilizes your RC plane (ailerons, elevator and rudder) using a MEMS 3-axis gyro (MPU-3050).
Eagle A3 flight controller1

The schematics below shows the EAGLE A3 flight controller wiring and ISP pinout . Useful if you want to reflash your firmware, or if you want to develop your own flight controller code for it…

Eagle A3 flight controller2

… and the Eagle A3 PRO flight controller (one additional input) circuit and ISP pinout:

Eagle A3 PRO flight controller

Atmega Pinout

Pin EAGLE EAGLE_PRO
PB0 LED_RED IN1
PB1 IN2
PB2 IN3
PB3 IN4
PB6 OUT2
PB7 OUT3
PC0 ADC2 ADC0
PC1 ADC1 ADC1
PC2 ADC0 ADC2
PC4 SDA SDA
PC5 SCL SCL
PD0 IN1 JMP1
PD1 IN2 JMP2
PD2 IN3 JMP3
PD3 LED_BLUE
PD4 OUT1 LED_RED
PD5 JMP1 OUT1
PD6 JMP2 OUT2
PD7 JMP3 OUT3

Happy controlling!

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A blog on projects with robotics, computer vision, 3D printing, microcontrollers, car diagnostics, localization & mapping, digital filters, LiDAR and more