LibrePilot Forum
Development => Hardware => Topic started by: lowz on January 31, 2016, 02:56:18 pm
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After following the guide on how to pair two op link boards, I am still not able to get them to pair. I Have tried using both as coordinator.
Im using the revo board and a op link mini.
op link mini as the coordinator and connected to computer.
The orange tx diode flashes wildly after startup
rx diode does not flash, but in the system tab -> GCSTelemetryStatus RxBytes is counting.
OPLinkStatus RXseq is not counting
Resets is counting.
Any pointers? any more info needed?
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Hi,
Post Oplink tab screenshot with oplm1 and oplm2
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I see here that the non-coordinator does not seem to send or recieve anything. I tried switching roles on them, the behavior was the same on both cards.
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Try with baudrate set to 57600
Set bigger range maybe 25 - 50 for channels ?
Edit: Tried using the same setup like you and it works here.
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no difference unfortunately.
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I also tried updating the boot loader on the revo board. And installing new firmware on both of them.
extrnal battery or 5V trough usb for the external card makes no difference.
Is not sending any packages (TX seq no = 0) expected behavour for the non-coordinator board? Or does it say so because it sends telemetry trough USB instead when connected?
And the amount of resets? is that normal?
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The coordinator do Tx every time with channel hopping.
The no-coordinator wait on first channel, when a coordinator is received and matches the CoordID field, it do Tx (Coordinator do Rx blink) and jump to next channel same time as coordinator.
The reset on Revo looks like nothing is received from coordinator.
If you have a UHF receiver you can check if Oplink coordinator really do Tx.
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I don't have access to a UHF reciver atm. Is there any other way to debug the handshake?
They switch behavour when assigning the revo role as coordinator.
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If you set the Revo as Coordinator you should see the non-coordinator Rx led blinking+Brief Tx led blinking.
Also find another Oplink so you can detect which side do not work.
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Does it log anything?
Is there any more equipment i need to really start to find out what is going on in the board, will order it aswell if im going to get a new oplink.
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With a new oplink you can test the first oplink and your revo, and finally find which side don't work.
Did you inspect the RFM22b module ? Maybe post some macro pictures ?
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Hello,
Maybe there are any news from you guys in this topic? I have the same binding issue and can not figure out how to make it work.
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There was another similar thread a few days ago and the solution was he forgot to hook up an antenna on one of the boards. The thread is at https://forum.librepilot.org/index.php?topic=1015.msg7322#msg7322
We all overlook the obvious sometimes.
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LOL ;D I love being the example. But yes damn antennas! I left it unplugged.
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Thanks for reference. The problem is a bit different. The telemetry works perfect (I get data from revo to oplink which is connected to pc). However, I am not able to make PPM Vehicle Control Link to work. Everything is connected to frsky taranis as here: http://opwiki.readthedocs.org/en/latest/user_manual/oplink/control.html but not working. Any ideas what could be wrong? :)
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Post screenshots of booth sides
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Sure. Here the one which is selected as coordinator is oplink connected to frsky taranis.
The problem occurs during the Input channel configuration, when I replicate movements on the controller. It seems like it doesn't send any signal.
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OPLink connected to taranis : Set flexiport to PPM, the one used for PPM input
On Revo : Check the PPM check box
If the link is already active, nothing more to do. Reboot all and go to Transmitter wizard.
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Do you mean to check PPM only? In this way the telemetry will be disabled, right?
And when in Transmitter wizard.. should the Revo or OPLink be connected via usb?
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No, there is "PPM only" and "PPM" while revo is connected.
You need "PPM" checked !
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Thanks, dude! This made it work! Brilliant :)
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How is the control when sent through the Oplink. I am currently using a Frsky Module. Why did you choose to go with the Oplink. Are there any pros or cons to going with an Oplink over a regular TX/RX or vis versa?