Thanks. Can I buy the UM982 from you? I have a Mammotion Luba robot lawn mower that uses this module and it works great. I want to build my own rover using the same RTK and also tap into the existing base station used by the mower.
my email is: dttworld@aol.com
Nah, sry, I’d suggest you to purchase from holybro official website.
I personally would like to do packaging and shipping as little as possible.
Good to know that Luba uses it and it works.
Maybe I have some wrong configuration or anything.
Probably will re-investigate next time for a RTK project.
I’m not very familiar with the UM982, but I wonder if it’s possible to limit the number of constellations? Often, when these types of inaccuracies are reported, it’s due conflicting position estimates from multiple constellations at once. Use, for example, only GPS and Galileo (or whichever two constellations are most visible in your locale).
Oh no, I meant that the UM982 board is very cheap, not the entire module.
Hi Leichen,
This is Lina from Unicore Communications. Glad to know you have been trying with our UM982. Sorry that I didn’t see your question until now.
Please send an email to zhulina@unicorecomm.com and i will invite our FAE to solve your technical questions.
Just to give you confidence, we are actually not new to the market, and major mower customers in China and abroad are using our solution:).
Look forward to your email, Lina
Hi Trinh,
Thank you for your interest in Unicore modules. I just sent an email to you.
Please feel free to ask any questions.
Lina
Did you manage to resolve the inaccuracy with this module?
I didn’t spend more time investigating the issue after finding the dual GPS working.
If any successful story, would love to hear.
My own bench tests of this module have been very promising. I’m behind on a project to employ it fully, but I expect no difficulty based on observation so far.
Good to know it’s working.
Yuri - any tips on getting good results from the UM982?
Hi,
I have a UM982, the positioning part works very well however I am unable to get any heading data.
As you posted that for you works, can you share your parameters to check if I am doing something wrong?
The only one I’ve used (from CUAV) was hidden behind a CAN interface. I don’t know the specific UM982 module settings to enable all features that you desire, which is where I suspect your configuration is failing.
Thank you for the information
Hello, can you say how you have configured your antenna? Can you share your configuration of your UM982.
I ha ve a similair project.
THinks
This is last year. Has anyone used the UM982 in the field and got it to work?? How about the CUAV C-RTK2 HP?
Yes, I have the CUAV C-RTK2 HP up and running. I’m very happy with it and have just started using it to mow my yard. I’m going to post a video ASAP. I’m using an orange cube + and a cytron motor controller.
JT, I love the specs on the CUAV C-RTK2-HP. Yuri has bench tested it and ardupilot apparently supports it, but I have not seen reports in the forums about people who have actually used it in the field. Makes me a little nervous. Can you say more about your experience? How is the heading management with the RM3100 built in and the two antennas? How far apart are your antennas? Mounted fore and aft or laterally? The specs on the CUAV are .2 degrees yaw and .8cm position (RTK fixed). It comes with 2 antennas, cables and the RM3100 built in. I have been trying the LC29 but it appears to have some flaws. How is the support on the CUAV? Interfaced to the Cube how? I2C? Not sure what chip the RTK2-HP uses. Apparently not the Ublox F9P or the UM982?!?
Hello, Leichen,
I just found your thread and am starting up with AP (after using a SODAR-based mower for many years). Could you please identify all of the modules in your equipment cabinet? I recognize the F9Ps, Pixhawk, and the motor driver, but not the others. Thanks!
right side is RC receiver and left side is telemetry receiver