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PPM input waveform
Started Oct 20, 2011 0 Replies 0 Likes
I am working on an engineering senior project to make a UAV. My job is to get the plane flying, while two teammembers work on the payload. The design criteria for the project required the use of a…Continue
PPM output waveform
Started this discussion. Last reply by Ross Kerley Oct 19, 2011. 2 Replies 0 Likes
I am working on an engineering senior project to make a UAV. My job is to get the plane flying, while two teammembers work on the payload. The design criteria for the project required the use of a…Continue
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Ross Kerley posted a discussionPPM input waveform
I am working on an engineering senior project to make a UAV. My job is to get the plane flying, while two teammembers work on the payload. The design criteria for the project required the use of a TI microcontroller somewhere in the project. I am trying to use an MSP430 as a PPM encoder. I already have it measuring all 8 channels out of my Flysky radio (probably quite inefficiently), and can send that data out of a serial port. However, I have not successfully made a PPM signal that…See More
Ross Kerley replied to Ross Kerley's discussion PPM output waveform"Neither the GUI or CLI report receiving any signals from the radio.
What am I missing waveform?
I haven't attached sensors yet, do they need to be present for it to analyze the PPM stream?"
Ross Kerley replied to Ross Kerley's discussion PPM output waveform"the attached picture is the closest approximation to the PPM waveform that I have made. It has 8 pulses of 1.5ms each, separated by approximately 0.250us. The pulse sets are delimited by a single 3.75ms pulse.
Should that…"
Ross Kerley posted a discussionPPM output waveform
I am working on an engineering senior project to make a UAV. My job is to get the plane flying, while two teammembers work on the payload. The design criteria for the project required the use of a TI microcontroller somewhere in the project. I am trying to replicate some of the functionality of the PPM encoder on an MSP430. I already have it measuring all 8 channels out of my Flysky radio (probably quite inefficiently), and can send that data out of a serial port. However, I have not…See More
Ross Kerley commented on Russell B. Sutton's blog post Polarity Protection for Turnigy 9x Tx"I'm curious now, maybe you have Drain and Source swapped? If you disconnect the Gate altogether, does it still work correctly?"
Ross Kerley commented on Russell B. Sutton's blog post Polarity Protection for Turnigy 9x Tx"My stock FlySky has built-in polarity protection. It merely has a series diode on the positive battery input.
I don't think your circuit will protect it from anything. The body diode of your MOSFET will allow current…"
Ross Kerley commented on Bertrand Duchiron's blog post IOIO a new I/O card only for android"Oh my, this opens up a bunch of easy opportunities for Android programmers. Sign me up!"
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