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