Search found 7 matches

by Briser
Mon Jul 29, 2019 11:26 am
Forum: FAQ
Topic: How to use IMU and ultrasonic for precise navigation
Replies: 5
Views: 2302

How to use IMU and ultrasonic for precise navigation

hello!
I have bought a hedgehog with IMU, I want to use IMU and ultrasonic to achieve accurate navigation and combine with Kalman filtering, but I don't know how to do. :|
by Briser
Sun Jul 28, 2019 6:11 am
Forum: FAQ
Topic: how to get x,y coordinates of hedge on the serial port of arduino?
Replies: 40
Views: 23052

Re: how to get x,y coordinates of hedge on the serial port of arduino?

Hello, Please check the ultrasonic coverage. Does your mobile beacon on line of sight with stationary beacons? Please refer to operating manual, especially sections 10.4, 10.5 10.6: https://marvelmind.com/pics/marvelmind_navigation_system_manual.pdf Check ultrasonic signals as shown in section 10.5...
by Briser
Fri Jul 19, 2019 3:19 pm
Forum: FAQ
Topic: how to get x,y coordinates of hedge on the serial port of arduino?
Replies: 40
Views: 23052

Re: how to get x,y coordinates of hedge on the serial port of arduino?

Thanks for your help very much.I have solved this problem.
But when I use the coordinates to control my robot,I find that the coordinate is not stable, it always drift. So how can I improve coordinate stability?
by Briser
Sun Jul 14, 2019 4:03 am
Forum: FAQ
Topic: how to get x,y coordinates of hedge on the serial port of arduino?
Replies: 40
Views: 23052

Re: how to get x,y coordinates of hedge on the serial port of arduino?

Hello. This is not a problem but a feature. Locations of all hedgehogs are available from any hedgehog or from modem. You can separate them by address of hedgehog transmitted in offset 22 of the data packet. Please see section 1.1.2 of the protocol: https://marvelmind.com/pics/marvelmind_beacon_int...
by Briser
Fri Jul 12, 2019 11:32 am
Forum: FAQ
Topic: how to get x,y coordinates of hedge on the serial port of arduino?
Replies: 40
Views: 23052

Re: how to get x,y coordinates of hedge on the serial port of arduino?

Hello!
When I connect a hedgehog to arduino(I want to obtain its coordinate), and I wake up two hedgehogs. But I obtain the two hedgehogs coordinates mixed together from the Serial monitor. So what's the problem? How can I separate them?
by Briser
Fri Jul 12, 2019 4:17 am
Forum: FAQ
Topic: how to get x,y coordinates of hedge on the serial port of arduino?
Replies: 40
Views: 23052

Re: how to get x,y coordinates of hedge on the serial port of arduino?

When I want to obtain coordinate and send it to the arduino, I could only pin the RX0, When I change the pin to RX1,I can't get anything.
by Briser
Thu Jul 11, 2019 12:49 pm
Forum: FAQ
Topic: how to get x,y coordinates of hedge on the serial port of arduino?
Replies: 40
Views: 23052

Re: how to get x,y coordinates of hedge on the serial port of arduino?

Hello
How can I get two coordinates from two hedgehogs at the same time and send them to the arduino?

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