2012年5月10日 星期四

FlySky GT3b Hack Tech Thread

Many of you probably don't know about all these amazing mods we are doing in the FS-GT3B Thread. Probably because its so LONG, and you don't hear about any of it till page 100. So here's a thread dedicated to all the tech of the mods. Feel free to ask questions as well.

Alright so here's the story, to sum up how this all came about.

Most of this all started when a local RCT member, PSX, decided to take the leap and popped open the gt3b. Originally he simply took the original FW on the GT3B, decoded it and modified it to fix the issues. Lack of trim, expo, etc. But he continued his quest for a better radio and developed his own firmware. Currently this firmware supports a alot of new features....now many other users, including myself, are working on ways to make the radio better.

There are also alot more mods, and services offered for the GT3B, which i'll be posting them in the next few posts. However i do have a small website which i was selling electronics for RC Rock Crawlers, due to my push for a very advance crawling features out of the GT3B, i have taken it under my wing, to make it easy for everyone to have a affordable radio. I sell firmware hack kits, pre-hacked gt3b's, here soon hack kits for all the mods, and easy to understand instructions and tutorials. Most of this is found at www.overkillrc.com . Most of my tutorials are forum posts scattered around over on RCC, but soon will be pdf's available on my website.

i belive this is all the new features the firmware offers in addition to the ones already there...there may be more

- 3-8 channels
- ~15 model memory depending how many channels your firmware is
- Sub trims
- More trim value (up to 99)
- copy models
- fixed expo
- Model reset
- Channel speed
- 4WS Mixing
- Dual ESC Mixing
- Dual ESC steering
- Multi Positions Switches (Up to 8 True positions out of a single push button)
- Key Mapping (any key can control any channel in many different ways)
- Calibration Menu
- Key Test Menu
- Backlight on time
- Inactivity Alarm
- Adjustable Low volatge warning
- Adjustable Maximum End Points (Up to 200% i think)
- Adjustable dead zone for steering and throttle
- Turn keep beeps on/off
- Adjustable long press delay


The Trim and d/r keys can do this

- nothing, it is possible to assign each button individually as key
- trim of channel 1/2
- dualrate of steering/forward/back
- expo of steering/forward/back
- change channel "n" value in range -100...100
- subtrim of channel "n"
- 4 wheel steering mix -100...100%
- DIG throttle mix -100...100%
- Multi-POsition, switches position up/down
- steering speed turn 1...100%
- steering speed return 1...100%


They Can be setup to act like this

- momentary, hold left/right trim key to get end values,
when nothing pressed, servo is at centre
- no long keys, long press is the same as short press
- autorepeat is on
- long press of one of trim keys will reset to
centre/reset value
- long press of trim key will set to coresponding end value

And they can have an adjustable step rate, opposite click reset, reversed, etc.

And the Keys (ch 3 button, back button, end button, and the trims if set individually) 

- nothing
- switch channel "n" value from one end value to opposite end
value.
- reset value of channel "n" to centre
- switch crab (CRB) no-crab (NOC) for 4 wheel steering
- switch DIG mix between -100 and 100 (more useable when using
return to previous val key setting)
- Multi-POsition, switches position up (at END back to 1.)
- Multi-Position Reset, switches position to first one