X3M-0701 Transmitter project

The X3M-0701 transmitter is a rebuilt Walkera WK-0701 transmitter.

Processor is changed to a version with larger memory
Completely new software
As an option: DC/DC converter to improve transmitt power when using NiMh batteries
Another option: Switch for transmitt power on/off
Jet another option: Throttle hold switch
One more option... Camera switch

The specification

Based on Walkera 0701
RS232 for parameter download
5 point curves on all controls
Able to handle at least Walkera PCM and PPM, and DF4 PPM
90 or 120 degrees swash plate
Model memory for 4 models
4 different flight modes
Option: Throttle hold (needs extra switch)
Option: Extra auto release switch for camera shutter etc.
Option: Beeper for low voltage, flight time indication etc.
Option: DC/DC converter for power stage in the transmitter (for NiMh batteries)

Rebuilding a WK0701 to a X3M 0701 transmitter is a very complicated modification if you not are experienced with electronics and software! (If you are experienced it should be pretty straight forward...)

All modifications are at own risk! My X3M 0701 works great, but i can not gurantee anything!

Project documents:

Documentation, hex file, Excel-configuration files and source code are available for download at the SourceForge download page.

Configuration of parameters

Throttle, pitch, rudder, aileron and elevator curves are easily changed via an excel sheet. You can also set serv directions, color of the walkera sign per flight mode etc.

Last update: 2007-10-28 by Eilert Johansson