Search found 207 matches

by smoker77
Tue Jun 04, 2019 8:59 pm
Forum: FAQ
Topic: how to get x,y coordinates of hedge on the serial port of arduino?
Replies: 29
Views: 15177

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

Hello, You see strange symbols in serial monitor because incoming data are in binary format. Serial monitor waits for ASCII symbols as I remember. For test, you can try to switch 'Protocol for UART/USB output' to 'NMEA0183' state in dashboard, in this mode mobile beacon will send ASCII strings. But ...
by smoker77
Wed May 22, 2019 8:37 pm
Forum: FAQ
Topic: Tracking Multiple Beacons unstable
Replies: 1
Views: 224

Re: Tracking Multiple Beacons unstable

Hello Such low RSSI may mean the beacon works not on its own radio band. Mini-Tx is working on 915 MHz, and the HW4.9 beacon is also adjusted for 915 MHz, but own frequency of this item may be 433 MHz. Please check the sticker on the bottom of the beacon. Radio band (433 MHz or 915 MHz) is printed o...
by smoker77
Mon Apr 29, 2019 7:00 pm
Forum: FAQ
Topic: How to read stationary beacon values using python ?
Replies: 3
Views: 855

Re: How to read stationary beacon values using python ?

Hello,
I think this thread is the following one:
viewtopic.php?f=2&t=18265
by smoker77
Mon Apr 29, 2019 6:51 pm
Forum: FAQ
Topic: No data from hedgehog from in ROS after change to inverse mode
Replies: 6
Views: 735

Re: No data from hedgehog from in ROS after change to inverse mode

Hello, Sorry for the delayed reply. Some notes: 1. You can't simply reprogram your beacons from HW4.9 starter set to inverse firmware. For inverse system you need HW4.9 beacons with different ultrasonic frequencies as stationary beacons, and Mini-RX (or Industrial-Rx) beacons as mobile beacons. But ...
by smoker77
Wed Apr 17, 2019 3:47 pm
Forum: FAQ
Topic: Code for interfacing Arduino with a hedgehog (using UART)
Replies: 3
Views: 1125

Re: Code for interfacing Arduino with a hedgehog (using UART)

Hello, We didn't tested Arduino-based robots in Marvelmind. But we have tested all provided Arduino examples of communication with our devices. Many of our customers are building robots based on Arduino and get data from mobile beacons, please read for example this topic: https://marvelmind.com/foru...
by smoker77
Wed Apr 17, 2019 3:22 pm
Forum: FAQ
Topic: how to get x,y coordinates of hedge on the serial port of arduino?
Replies: 29
Views: 15177

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

Hello jyS2019, According to your screenshot from dashboard, the map is not successfully built. So mobile beacon is not tracking and it doesn't send its location in this case. Please achieve tracking in dashboard - build and freeze the map and ensure the mobile beacon is updating its position. Then y...
by smoker77
Wed Apr 17, 2019 3:09 pm
Forum: FAQ
Topic: Uploading new Firmware to HW4.9 Starter Set fails
Replies: 2
Views: 500

Re: Uploading new Firmware to HW4.9 Starter Set fails

Hello, Thank you for the information about the issue and workaround. Yes, current Linux version of dashboard (v6.08) can fail updating firmware from some older versions. We will fix this issue in next software update. Before this, please use Windows version of dashboard for updating software if Linu...
by smoker77
Wed Apr 17, 2019 2:35 pm
Forum: FAQ
Topic: IMU Data shows that the beacon it's rotating
Replies: 1
Views: 486

Re: IMU Data shows that the beacon it's rotating

Hello, It seems your situation is caused by gyroscope drift. Gyroscope can report some small none-zero angular speed by one or all 3 axes X, Y, Z even if the beacon is not rotating. This drift should be eliminated in software. To eliminate it inside mobile beacon, select mobile beacon in dashboard a...
by smoker77
Wed Mar 27, 2019 4:34 pm
Forum: FAQ
Topic: Output Display Alternative
Replies: 2
Views: 594

Re: Output Display Alternative

Hello Arduino should print on LCD the waypoints as shown on attached photo. One point after another with interval ~1 sec. On the photo is waypoint X=2.77 m, Y= 1.01 m. Yes, you can send any data and view via serial port monitor. Here is topic with discussion about serial port monitor and examples of...
by smoker77
Fri Mar 22, 2019 10:39 pm
Forum: FAQ
Topic: Can't Retrieve Raw Distances
Replies: 11
Views: 1871

Re: Can't Retrieve Raw Distances

Hello,

In current version of software each mobile beacon streams only distances from itself to stationary beacons, but not streams distances from other mobile beacons to stationary ones.
You can get distances from all mobile beacons to stationary from modem.

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