Hi Shreekant
The er9x site speaks of some benefits, which i don't think the causal flyer might be interested in, or even comprehends completely.
I chose this mod because I wish to foray into FPV and Telemetry and move to FrSky systems
So going from simple to complex, here is what lurks on the surface
- can turn that idiotic key beeper off, esp when my little one is sleeping.
- can change the low battery alarm setting so it's not beeping all the time
- can store longer names of models (so I can store 'Boomerang' instead of 'Boomer')
- can program any switch/pot to any channel (this is different from mode selection)
- can set d/r throws individually for stick directions.
- the timer can be programmed to start automatically (rather than flipping the Trn switch, esp in my case, where I broke the switch and had to replace with a non spring loaded toggle switch)
- can have a minute beep
- can control backlight (needs a small mod)
- automatically load upto 6 models at startup, for quick switching
- a much more reliable volt reading. The stock firmware reading never matched with my balance charger (and it floated between points), this one matches
- can create custom mixes - this sounds useless but is not, most expensive radios have custom mixing, the mid range ones don't
- mixes can be assigned to switches and changed in flight via switches, or virtual switches (inputs from other channels)
- the Tx can be connected to the PC now and programmed via the PC.
- with little hardware mods, FrSky telemetry, DSM Radios can be supported, and pretty soon voice. Loads of guys have already done these.
- can integrate with ArduPilot with hardware mods
There are many other things one can do, the list indeed goes on. But yes it only depends on what one needs and what not.
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