Flysky 9X transmitter/Frsky V8JT module

If you've got a problem then you can ask here and either I or others will likely come to your rescue.

Flysky 9X transmitter/Frsky V8JT module

Postby hajema123 » Tue Jan 03, 2012 10:44 pm

Has anyone heard of an issue with this combination? I've read a blog recently which stated the following:

Ok, the problem is that the 9x drives the ppm signal to the module direct from the atmel processor. This gives a 5V, low impedance signal.
Unfortunately the V8JT assumes a high impedance or open collector drive so it has no overload protection on the ppm input.
The bottom line is that you are driving a 5V signal into a 3.3V processor input and there is a big chance it will fail.

I'm not that technical, but I get the gist, and it ain't good! I also see that Frsky has discontinued this module. I'm concerned mine may fail at any time, and am trying to find out if Frsky are going to sell a module with a fix.

Thanks Mark
Posts: 1
Joined: Tue Jan 03, 2012 10:37 pm

Re: Flysky 9X transmitter/Frsky V8JT module

Postby quarry44 » Wed Jan 04, 2012 12:46 am

The statement made about this was on RC Groups.The solution was also included.
see here:
If your transmitter is operating normally,I don't think you have anything to worry about.This concerned an early issue with jittering servo's.
Posts: 383
Joined: Fri Aug 19, 2011 6:58 am

Return to Help Needed

Who is online

Users browsing this forum: No registered users and 1 guest