"(Yet another) update: after flashing the PPM encoder that DID have the external oscillator (16 Mhz), I was able to have it work with the quad -- first flight was a success. This confirms that the problem I was experiencing with the 2/3 levels was…"

"Update -- I only realized now that I got 2 different boards!... One has the crystal. The other one does not. Foolish me, I assumed that they were identical. So I think that what happened was that I programmed the 8Mhz board with the 16 Mhz hex file.…"

"Chris,
Could you please direct me to that tutorial.. I screwed something up and I can't read the device anymore."

"Maybe I should have specified that I am using a Futaba 6008HS as a receiver..."

"Well.. I ran into another snag. First of all, I had to reassign the channels on the Futaba xmtter -- at elast temporarily -- to get throttle on channel 3. Now the PPM encoder blinks on power on. But... when I look at the channel output on the quad's…"

"Quick update... I managed to figure it out. I updated both board with the firmware. One of the boards is on the quad and blinks. I think I still have some inverted channels... but nothing that I can't handle. Thanks a lot for your help."

"Also, just to make sure... The 16Mhz version has a crystal on the board which appears as a metallic rectangle between the CPU and the row of servos solder pads... Is that right?"

"Ok... I got the AVR ISP II and installed the AVR Studio. I think I am ready for that tutorial :-)"

"Ok... So after trying a number of things, I came to the conclusion that I have to reprogram the PPM encoder. I don't have much experience with the Arduino, but I am a software engineer. What would be the easiest solution in terms of an AVR…"

"Chris,
Thanks a lot for taking the time to illustrate this (especially with a video!)... It confirms what I thought. My LED stays solid even when the transmitter is turned on and the receiver light turns to greeen (there is a status LED on the…"

"Well, honestly, I wish I could worry about the output... The point being that the led is solid blue and if I recall well, it should be blinking when it sees that all the channels are connected and the internal clock is working. I checked that all…"

"I just purchased 2 PPM encoder boards from DYI Drones. And I am experiencing the same condition as was described by others here. The board is conneced to a Futaba 6008HS FASST receiver. All 8 channels are connected and tested working by connecting a…"