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Activity Feed

Marcin Krawczyk replied to Trishant Roy's discussion 3DR Wireless Telemetry: Green Solid LED on both radios
"You should have connecred Rx from radio to Tx on EB and vice versa.
If you're upgrading ground module's firmware - you have also to connect air module to PC and upgrade it's firmware to the same version. And also check if both modules have the same…"
Jun 20, 2017
Marcin Krawczyk replied to Trishant Roy's discussion 3DR Wireless Telemetry: Green Solid LED on both radios
"Try to swap two black wires next to red one.
But first check baudrate."
Jun 20, 2017
Marcin Krawczyk replied to Trishant Roy's discussion 3DR Wireless Telemetry: Green Solid LED on both radios
"Try to swap Rx-Tx lines, check baudrate (57k)."
Jun 20, 2017
Marcin Krawczyk replied to Rob Izatt's discussion Simple RF Data link for GPS data
"Rob, first check uCenter with direct connection to GPS unit, if this will sufficient for you. Than you can use radio link to connect this unit remotely."
May 12, 2017
Marcin Krawczyk replied to Rob Izatt's discussion Simple RF Data link for GPS data
"I've tested it before, both with NMEA and proprietary uBlox binary protocol - all works fine if you'll set correct baud for radio link.
But the question was asked over a half year ago and I'm not sure if is still valid..."
May 9, 2017
Marcin Krawczyk replied to Rob Izatt's discussion Simple RF Data link for GPS data
"Simple but worth considering :-)
PS. Pls, "Martin", not "Marvin" ;-)"
May 9, 2017
Marcin Krawczyk replied to Rob Izatt's discussion Simple RF Data link for GPS data
"He can connect i.e. M8N GPS receiver via radio link to PC running uCenter and control position from ground."
May 9, 2017
Marcin Krawczyk replied to kane vincia's discussion Benewake newest LiDAR in Agricultural UAVs
"Well, EN website version highly recommended..."
Sep 9, 2016
Marcin Krawczyk replied to yugo's discussion Where To Buy Pixhawk
"1. This category is for 3DR Radio (telemetry), not for Pixhawk.2. There's no "geniune" or "fake" PIXHAWK - it's open hardware: https://pixhawk.org/"
Aug 18, 2016
Marcin Krawczyk replied to Ionescu Gabriel Mihai's discussion 3DR Radio problem
"I'm afraid that at least one of them is dameged."
Jul 14, 2016
Marcin Krawczyk replied to Ionescu Gabriel Mihai's discussion 3DR Radio problem
"For the test phase:
- TxPower=20,
- ECC on
- Min freq 414000
- Max freq 454000
- # of Chan 20-30
- Duty cycle 100%

Try this (with antenna attached ONLY - high Tx power)"
Jul 14, 2016
Marcin Krawczyk replied to Anas Megahed's discussion Problem: 3DR Radio modules don't connect at all!
"Yep, I know, that was a little piece of advertisement for good quality stuff ;-)"
Jun 11, 2016
Marcin Krawczyk replied to Anas Megahed's discussion Problem: 3DR Radio modules don't connect at all!
"NET ID has default value and you're using to much channels (max is 20-30 for stable work).
But IMHO this is not the root for your problem. If you're able - check your pair with different modem to find defective."
Jun 11, 2016
Marcin Krawczyk replied to Anas Megahed's discussion Problem: 3DR Radio modules don't connect at all!
"Show me you radio config (screen capture)."
Jun 10, 2016
Marcin Krawczyk replied to Anas Megahed's discussion Problem: 3DR Radio modules don't connect at all!
"Andre, I'm using genuine HM-TRP from HopeRF in my modems, but I'm PL, not CN :-)"
Jun 10, 2016
Marcin Krawczyk replied to Anas Megahed's discussion Problem: 3DR Radio modules don't connect at all!
"No, connect ground module to PC as usual. Then power up air module with APM unconnected and Rx-Tx shorted, so radiolink should loop your transmission."
Jun 10, 2016
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