Replacement: None. We're no longer building this board. This page is for reference only.

This is our UAV Development Board (UDB4, as in, "UAV Development Board version 4"). The UDB4 comes populated with a dsPIC33FJ256 CPU, an MMA7361 three axis accelerometer, a dual axis IDG500 gyro, and a single axis ISZ500 gyro. The on-board Invensense gyros even have enough vibration tolerance to be used in RC heli applications.

By itself, the board can be used to develop a three axis IMU controller. By addition of an EM406 or D2523T GPS receiver, it can be used to develop a UAV controller for an RC car, plane, helicopter, or boat. It comes with self-testing firmware that can serve as a starting point for you to develop your own control and navigation firmware. There is even fully functional, open source autopilot firmware available. We've removed the reset button in order to prevent in-flight resets (not good). The PCB hasn't changed, however, so if you like, you can still add a reset button. Note: **For programming, we recommend the PICkit3. Check the related products below. **Note: A GPS module is not included. Check the related products below.

Replaces:GPS-10582

• compatible with 20-channel EM-406A SiRF III GPS
• compatible with 50-channel GS407 Helical GPS
• dsPIC33FJ256 Controller (with onboard 3.3V and 5V glue logic)
• dsPIC runs at 120MHz with 8MHz resonator and PLL
• MMA7361 three axis accelerometer
• IDG500 dual axis gyro and ISZ500 single axis gyro
• External 256Kbit EEPROM
• Up to 8 Input, 8 output PWM points
• 6-wire debug header or ICSP header
• 4 separate colored status LEDs
• On board 3.3V and 5V regulators (150mA max)
• Spare USART connection for debugging, flight logging, wireless telemetry, etc.
• 30 spare analog and digital I/O pins for debugging and interfacing to sensors

• Schematic
• Eagle Files
• Datasheet (MMA736)
• Datasheet (IDG500)
• Datasheet (ISZ500)
• MatrixPilot Code
• DIYDrones UDB Page
• DIYDrones UDB Article (how the UDB handles sustained rotations)