Sunday, May 20, 2007

Convert Futaba FF7 to 2.4G




1) The PIC board (Program board that cut the excess Channel to 6 Channel signal, and change Futaba +PPM to -PPM) . You need a PIC burner to do this. Make sure your firmware support the PIC 12F683.

2) 5V power supply to PIC board. It takes <20mA.So if you Tx circuit feeds 5V is ok to steal it from the Tx circuit. My FF7 do not feed 5V (only 3.2V) so I need an extra 5V supply (Any $10 USB charger will do)

3) Since I use 3 cell li-po for my FF7, the DX6 module eats max 11V. So I can 2 diode to reduce voltage from 12.6V to 11V.

Other tips:

隱藏:
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1) Reset all Failsafe in all channel in the original DX6 Tx. THis is because Failsafe information is stored in receiver. Once conversion done, you cannot reset/change the failsafe setting, unless reconnect to the DX6 Tx. This is important if planning to convert Futaba as the channel correspond different ftom JR/DX6. e.g. Channel 1 = Throttle in DX6 will become abnormal movement aileron CCPM in Futaba.

2) Must ground all connection , including the 5V supply, PIC board and DX6 module.

3) The DX6 module will time out in <1 seconds if not PPM signal on initiation, so do not be surprised. Some Futaba model has been mentioned to switch on the Tx before the DX6 module. But I have no problem to start them together.

4) The PIC hex file from rc-man has a new version v1.3, the old version does not work with Futaba.