JR TX Piggy-back module adapter
thingiverse
I just converted this old JR FM Tx that's been collecting dust to 2.4GHz by installing a Spektrum DSM2 module into my E-flite Blade MSR. Since the module is designed for Futaba transmitters, I had to create a small circuit board to adapt the ppm frame and swap out two sticks on the control panel.
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