MultiWii 32U4 SE - User Manual

Multiwii_32U4_SEManual
Rev01
1.Introduction
TheMultiwii_32U4_SEisanAll‐In‐OneFlight‐Controller(FC),usableforallsizesof
Multirotor helicopters.Itisequippedwithamicrocontroller,a3‐axisgyroscope
(GYRO),
a3‐axisaccelerometer(ACC),a3‐axismagnetometer(MAG)andabarometer(BARO)..
TheFCwasdevelopedforusewiththemultiWii‐software(www.multiwii.com)from
Alexandre Debus–aka.AlexInParis – anditsupportsallflightconditions.
AnAtmel AVR8‐bitmicrocontroller(MCU),the ATME GA32U4,isusedonthe32U4_SE.
ThisMCUhas6high‐resolutionPWM(ESCsignal)outputs,anon‐chipUSBinterface
(so,noneedforaFTDIadapter)andtheabilitytoreadthesignalsofvariousRXtypes.
A5
A4
A3
A2
A1
A0
D4
D13
D11
D6
D5
D10
D9
D12
TXO
RXI
5V
GND
2~3SLipo
THR ROLL PITCH YAW AUX1 AUX2
Output
GND 3.3V SCL SDA
MiniUSB
3.3V
GND
Signal(RX)
GND RAW
Input

Summary

Introduction to Multiwii 32 U4_SE

Power Supply for Multiwii 32 U4_SE

Connecting a Receiver (RX)

Normal RX Connection

Connect a standard RX using signal and power for throttle, signal only for other channels.

PPM Sum RX Connection

Utilize a PPM sum RX for up to 8 channels using a single patch wire.

Spektrum Satellite Connection

Connect a Spektrum satellite receiver for up to 8 channels via its serial UART interface.

Connecting ESCs and Servos

ESC Connections

Connect up to 8 ESCs to PWM outputs, noting motor positions and spin directions.

Servo Connections

Connect up to 5 servos to PWM outputs for additional control functions.

Copter Installation Guidance

MultiWii Firmware and Upload

Activate 32 U4_SE Sensors

Uncomment '#define FREEIMUv043' in the firmware to activate the 32U4_SE's sensors.

External Sensor Integration

I2 C Sensor and GPS Module Integration

Connect I2C sensors like GPS modules, ensuring they are 3.3V compatible.

Enable Full Pin Utilization

Uncomment '#define A32U4ALLPINS' to access all hardware PWM and I/O pins.

MultiWii 32U4 SE Specifications

General

Microcontroller	ATmega32U4
Operating Voltage	5V
Gyroscope	MPU6050
Accelerometer	MPU6050
Barometer	BMP180
Magnetometer	HMC5883L
Firmware	MultiWii
Analog Input Channels	12
Flash Memory	32 KB
SRAM	2.5 KB
EEPROM	1 KB
Clock Speed	16 MHz
Input Voltage	5V
IMU	MPU-6050