LoMA is OK with Futaba, not Multiplex

[William 0]

I built three "Lost Model Alarm" units and they are very good.

I have tested with different buzzers and sounds are obviously not the same but they are perfect but only with Rx Futaba ( negative shift), when I put them in the Multiplex (positive shift) it keeps sounding like a missing Tx signal.

What should I do to ? Something in the circuit or in the program?

Thanks to RC-CAM to help me and my friends (that told me about RC-CAM) here in Brazil.

William

Sao Paulo- BRAZIL

[Mr.RC-Cam 126]

LoMA won't work with some Multiplex systems because of its odd framerate. There is a note about this in the project page (reprinted below):

Note: LoMA works with nearly all PPM and PCM receivers. It is NOT compatible with R/C systems that utilize slow servo framerates (like some Multiplex R/C systems use).

[William 0]

Now I replaced the Rx for GWS (positive shift). The Tx is the same, Multiplex.

The control functions are OK but the Loma is still with problem.

I supose that the Tx send the signal in this odd framerate condition that you explained so it is transparent for the Rx but not for the Loma, is that correct?

Thanks for the help and explanation.

William

[Mr.RC-Cam 126]

Have you tried turning off the Tx's unused channels? I have no idea if this would help, but it is worth a try.

[Mr.RC-Cam 126]

The hex attached file is a special version that has been adapted to allow slow PPM frame rates. It may solve your problem.

lma_v13_mpx.zip

[William 0]

I was out of town last two weeks and had no time to try.

I will do and report results,

Thanks for the help

William