Anonator

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  • Long range fixed wings
OPLink alternatives
« on: April 19, 2018, 04:39:42 am »
Getting good oplink getting harder... Any way we could use these, maintaining PPM control as well.

https://hobbyking.com/en_us/hkpilot-transceiver-telemetry-radio-set-v2-915mhz.html

Re: OPLink alternatives
« Reply #1 on: April 19, 2018, 06:11:58 am »
Yes, but...

They will be set up as an unintelligent serial link and will have to control their own buffers with a bit less than optimal results.  For instance If you just want to send a small amount of data, they will have to time out and send less than a whole buffer full.

In the past, I have used some similar stuff on 433 because it was very cheap.  It worked, but was slower.  I would probably not recommend that you use it for control (just telemetry).

New old stock that apparently came from now defunct OpenPilot store.  I have bought many from here and they are good.  You can buy 4 before USA shipping starts getting expensive.  I don't know about Australia shipping...
https://sasquatchlabs.org/product/genuine-oplink-mini-modem/

karla

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  • 442
Re: OPLink alternatives
« Reply #2 on: April 19, 2018, 10:44:55 am »
+1 Cliff
I just now baught 3 pairs of the OPLMs there.
Its the original batch from Australia and they still got a lot of them but consider to discontinue.
Those guys are doing a great job.
« Last Edit: April 19, 2018, 10:52:07 am by karla »

Re: OPLink alternatives
« Reply #3 on: July 20, 2018, 02:28:29 am »
Seems they are all gone.  Looking for Oplink mini in stock anywhere on CONUS.

Re: OPLink alternatives
« Reply #4 on: July 20, 2018, 02:32:05 am »
Would the HK Transceiver telemetry modules work on the mini revo?  I can't get any power from the mini revo usb to make it work.   do i need a custom cable?

Yes, but...

They will be set up as an unintelligent serial link and will have to control their own buffers with a bit less than optimal results.  For instance If you just want to send a small amount of data, they will have to time out and send less than a whole buffer full.

In the past, I have used some similar stuff on 433 because it was very cheap.  It worked, but was slower.  I would probably not recommend that you use it for control (just telemetry).

New old stock that apparently came from now defunct OpenPilot store.  I have bought many from here and they are good.  You can buy 4 before USA shipping starts getting expensive.  I don't know about Australia shipping...
https://sasquatchlabs.org/product/genuine-oplink-mini-modem/

Re: OPLink alternatives
« Reply #5 on: July 20, 2018, 06:43:13 am »
You need to have a flight battery plugged in to your BEC/ESC for power to come out MainPort or FlexiPort, etc.

I tried Sasquatch Labs and had trouble with the cart.  I sent an email to [email protected],  Will post if I hear back.
« Last Edit: July 20, 2018, 05:34:31 pm by TheOtherCliff »

Re: OPLink alternatives
« Reply #6 on: July 20, 2018, 10:19:38 am »
As an alternative supplier for a good OpLink Mini,  I bought mine from BangGood.  Cheap as chips, and works perfectly with my Revo.

Only thing you will need to do is flash it with the latest firmware from GCS when you connect it to your pc/laptop for the first time.

https://www.banggood.com/OpenPilot-OPLINK-MINI-CC3D-REVO-Universal-Transceiver-TX-RX-Module-Integrating-Remote-Controller-p-1000081.html

jdl

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Re: OPLink alternatives
« Reply #7 on: July 20, 2018, 03:53:07 pm »
I confirm Banggood ones work fine. I have two of them.

I've also bought some from xt-xinte, they look the same and work flawlessly.

https://www.xt-xinte.com/OPLINK-MINI-CC3D-REVO-Universal-Transceiver-TX-RX-Module-Integrating-Remote-Controller-PPM-Input-DIY-FPV-Drone-p136508.html

P.S. The same seller has Revolution FCs that seem to be absolutely identical to ones Banggood sells. I have two Revos from xt-xinte and have no problems with them. No baro issues, and their integrated RFM22B modems work as expected, too.

https://www.xt-xinte.com/OpenPiolot-CC3D-Revolution-Flight-Controller-Revo-Support-Auto-Return-DIY-Mini-250-Quadcopter-Multirotor-Heli-Fixed-Wing-p140119.html
« Last Edit: July 20, 2018, 04:02:25 pm by jdl »

Re: OPLink alternatives
« Reply #8 on: July 20, 2018, 05:51:42 pm »
I asked the owner and sasquatchlabs.org has closed so the links I posted (I will search and mark them closed) won't work.

"closed up shop" "the remaining gear with the AlienWhoop folks"
I checked shop.alienwhoop.us and do not see the OP stuff there (yet at least).

Re: OPLink alternatives
« Reply #9 on: July 20, 2018, 06:09:18 pm »
You need to have a flight battery plugged in to your BEC/ESC for power to come out MainPort or FlexiPort, etc.

I tried Sasquatch Labs and had trouble with the cart.  I sent an email to [email protected],  Will post if I hear back.

battery plugged in...  GPS locked etc.  Is USB for PC only?

Re: OPLink alternatives
« Reply #10 on: July 20, 2018, 06:13:15 pm »
As an alternative supplier for a good OpLink Mini,  I bought mine from BangGood.  Cheap as chips, and works perfectly with my Revo.

Only thing you will need to do is flash it with the latest firmware from GCS when you connect it to your pc/laptop for the first time.

https://www.banggood.com/OpenPilot-OPLINK-MINI-CC3D-REVO-Universal-Transceiver-TX-RX-Module-Integrating-Remote-Controller-p-1000081.html
where can one get the cables? 

Re: OPLink alternatives
« Reply #11 on: July 20, 2018, 09:26:25 pm »
USB power does not come out MainPort or Flexi* so you must plug in flight power to power things from these.

The connector is "jst-sh 1.0" (1.0mm).  Various kinds can be bought in many places.

When connecting OpLink to an FC you need jst-sh on both ends of cable, and Txd/Rxd must be crossed to connect to Rxd/Txd at the other end.  Magnifying glass.  Lift tiny tiny connector flap just enough to slide pin out from Txd and Rxd on one side.  Plug the pins back in the other way.

Re: OPLink alternatives
« Reply #12 on: July 20, 2018, 11:37:11 pm »
USB power does not come out MainPort or Flexi* so you must plug in flight power to power things from these.

The connector is "jst-sh 1.0" (1.0mm).  Various kinds can be bought in many places.

When connecting OpLink to an FC you need jst-sh on both ends of cable, and Txd/Rxd must be crossed to connect to Rxd/Txd at the other end.  Magnifying glass.  Lift tiny tiny connector flap just enough to slide pin out from Txd and Rxd on one side.  Plug the pins back in the other way.

Yes, my problem is I'm not getting any power from USB when flight battery plugged up.  I was going to use the HK transceiver in this manner..  via USB.   It came with a 5 pin connector other than the USB.  Maybe I can put jst on one end.