Flysky PPM

[copterrichie]

What a show stopper, just ordered two of the inexpensive Flysky 6 channels RX and founded out, they no longer output PPM on the Battery Pin. WTH! Anyone have a work-around for these RX's or will I have to purchase some other RX? If so, is there one that will work with the Turnigy 9X transmitter without modifications?

Thank you.

[PatrikE]

I use Frsky JR modules in my Turnigy 9X.
Perfect match...

[copterrichie]

But purchasing the Frsky JR module cost money, money that I am not willing to spend right now. Do you know of a work around for the Flysky?

[PatrikE]

Check the heli thread.
Simple PPM connverter

[copterrichie]

Thanks.

[PatrikE]

I demolished mine but couldn't find PPM inside...

[copterrichie]

The sad fact here is, they used to have PPM on the Battery Pin. All of the ones that I purchased up to now, had this. I wrote Flysky an email today but have not received a reply.

[PatrikE]

I read somewhere they made a change some time ago.

To bad It's really cheep recievers..
Would be nice to ba able to reflash them....

[copterrichie]

and it works. Sad, just sad!

[thebgrian]

Copterrichie, did you get and reply from Flysky?
This is sad, those are great little inexpensive Rx-s. Is it a hardware change or firmware?

[copterrichie]

Sorry but NO, I did not hear a word. Apparently others have made this same request so I assume now, they are just ignoring any additional request. I have resolved to building the PPM converter mentioned above, I am awaiting delivery of some 4.7K resistors.

And Yes, it is a shame because the RX worked great with the Failsafe feature of the FC.

[penpen77]

i'm using this http://lea.hamradio.si/~s56wix/pwm2ppm/ (i've always some avrstuff/atmelstuff/ardustuff sleeping somewhere)
Works good, "physicaly smart" (plug easily in RX) and correct behaviour with sequencial and parallel pwm output

[copterrichie]

i'm using this http://lea.hamradio.si/~s56wix/pwm2ppm/ (i've always some avrstuff/atmelstuff/ardustuff sleeping somewhere)
Works good, "physicaly smart" (plug easily in RX) and correct behaviour with sequencial and parallel pwm output

Oh, I like this. with some modifications, failsafe and a host of other features are possible. Thank you.

[noobee]

this one still outputs the cppm signal

http://www.hobbypartz.com/79p-r6b-receiver.html

[copterrichie]

this one still outputs the cppm signal

http://www.hobbypartz.com/79p-r6b-receiver.html

I have bad news, those are the ones I most recently purchased. They no longer output PPM unless I am doing something wrong.

[noobee]

oh no.. :O

sorry to hear that.

[Pyrofer]

Is there ANY receiver with PPM-sum output now???

I have a fs-tm002 TX module and want a receiver with ppm-sum to match.

If anybody has any suggestions please let me know here!

[copterrichie]

It was not so bad, not it is time for lots of ground testing to make sure everything is working as it should be. Thank you PatrikE and everyone commenting on this post.

[copterrichie]

FYI: I had the change the following in the DEF.ino file to get this PPM convert to work. Had to change the detection from RISING to FALLING otherwise, channel one went undetected.

Code: Select all

//#define PPM_PIN_INTERRUPT          attachInterrupt(0, rxInt, RISING); //PIN 0
  #define PPM_PIN_INTERRUPT          attachInterrupt(0, rxInt, FALLING); //PIN 0

I am happy, need to do more testing.

[msev]

Richie how is that rssi mod working for you?

Another thing how could we detect failsafe on this receiver so that multiwii could initiate some function like rth, when it detects failsafe.

[copterrichie]

I have no idea on the RSSI, I gave that quest up as for the Failsafe, it appears to work as is but more testing is required. When I shut off the transmitter, all of the values in the GUI goes to the Failsafe levels.

[msev]

Which channel of all the channels do you use for detecting it? So you have it connected to an analog input on the arduino...Can you point me to the relevant parts of code in multiwii?