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    Intergrating VL53L1x Range Finder with VOXL2

    VOXL 2
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    • J
      Jetson Nano
      last edited by 26 Jul 2024, 10:23

      This is the wiring diagram of the sensor with the USB Expansion Board.
      Screenshot 2024-07-26 at 3.52.05 PM.png

      J 1 Reply Last reply 26 Jul 2024, 17:42 Reply Quote 0
      • J
        Jetson Nano @Jetson Nano
        last edited by 26 Jul 2024, 17:42

        @modaltb Is there any specific SDK we could check for the working of Range-Finder with?

        M 1 Reply Last reply 30 Jul 2024, 15:22 Reply Quote 0
        • M
          modaltb ModalAI Team @Jetson Nano
          last edited by 30 Jul 2024, 15:22

          @Jetson-Nano are you using our M0070 board like this? https://docs.modalai.com/rangefinders/#single-rangefinder-using-m0141-expansion-board

          Or custom? If custom check pin 5, which on our M0070 board is pulled up to 3.3VDC.

          5639b8e2-b569-4c3e-934e-6ab3816e4ab5-image.png

          J 1 Reply Last reply 30 Jul 2024, 15:30 Reply Quote 0
          • J
            Jetson Nano @modaltb
            last edited by 30 Jul 2024, 15:30

            @modaltb I'm using M0141 expansion board.

            M 1 Reply Last reply 30 Jul 2024, 15:32 Reply Quote 0
            • M
              modaltb ModalAI Team @Jetson Nano
              last edited by 30 Jul 2024, 15:32

              @Jetson-Nano what is the VL53L1X on?

              J 1 Reply Last reply 30 Jul 2024, 15:35 Reply Quote 0
              • J
                Jetson Nano @modaltb
                last edited by Jetson Nano 30 Jul 2024, 15:35 30 Jul 2024, 15:35

                @modaltb is connected on J5 port of M0141.

                M 1 Reply Last reply 30 Jul 2024, 15:37 Reply Quote 0
                • M
                  modaltb ModalAI Team @Jetson Nano
                  last edited by 30 Jul 2024, 15:37

                  @Jetson-Nano can you take a picture? for example, we make a M0070 board that has this sensor on it. Are you making your own carrier board for the sensor?

                  0b5bffdb-4c2d-495a-96db-d42e6dd0c8cb-image.png

                  J 1 Reply Last reply 30 Jul 2024, 15:43 Reply Quote 0
                  • J
                    Jetson Nano @modaltb
                    last edited by 30 Jul 2024, 15:43

                    @modaltb This is our setup,

                    IMG_3702.jpg
                    IMG_3703.jpg
                    IMG_3701.jpg

                    V 1 Reply Last reply 30 Jul 2024, 17:41 Reply Quote 0
                    • V
                      Vinny ModalAI Team @Jetson Nano
                      last edited by Vinny 30 Jul 2024, 17:41 30 Jul 2024, 17:41

                      HI @Jetson-Nano
                      We have not seen that module before.
                      Is there a product link you can share so we can investigate for voltage and signal compatibility?

                      Thanks!

                      J 1 Reply Last reply 31 Jul 2024, 04:50 Reply Quote 0
                      • J
                        Jetson Nano @Vinny
                        last edited by 31 Jul 2024, 04:50

                        @Vinny @modaltb Here is the link of the product

                        https://www.ktron.in/product/vl53l1x-laser-ranging-module-tof/

                        Thanks!

                        V 1 Reply Last reply 31 Jul 2024, 17:01 Reply Quote 0
                        • V
                          Vinny ModalAI Team @Jetson Nano
                          last edited by 31 Jul 2024, 17:01

                          Thanks @Jetson-Nano
                          Can you help us find schematics?
                          I do not know what these parts are doing and could be leading to some of your issues...
                          c8740441-8344-4eda-b26d-9762e267bcf4-image.png
                          That site only has the link for the original datasheet.
                          Without more detail, I cannot offer much help aside from speculation.

                          Thanks!

                          J 1 Reply Last reply 2 Aug 2024, 04:48 Reply Quote 0
                          • J
                            Jetson Nano @Vinny
                            last edited by 2 Aug 2024, 04:48

                            @Vinny I was not able to get the schematics. But when I tested this sensor with a Pixhawk flight controller running PX4, I was able to get it working on I2C.

                            V 1 Reply Last reply 2 Aug 2024, 05:05 Reply Quote 0
                            • V
                              Vinny ModalAI Team @Jetson Nano
                              last edited by 2 Aug 2024, 05:05

                              Hi @Jetson-Nano
                              Pixhawk ports are 5V voltage output, we provide 3.3V.

                              77c90398-23c8-4f39-b1d1-324977798bc6-image.png
                              So, that data point does not help me from the HW viewpoint. I am assuming you knew you had 5V VREF from Pixhawk and converted to 3.3V.

                              However, if we had the SCH of that module, that will tell me if they are actually trying to do voltage conversion of the I2C bus down to 1.8V (the default operating mode of these ST ToF units), which most likely is not compatible with our ports.
                              aa868fe7-8fd0-4d78-b7f1-a33c75f8b832-image.png

                              Most hobby electronics shops do not plan for all variations of translators, and most voltage translators do not like being cascaded. With a pixhawk, you are native 3.3V from the micro-controller w/o a level translator, so going through 1 level translator down to either 1.8V or 2.8V is no issue.
                              On VOXL 2 and VOXL 2 Mini, all of our JST ports have been translated up from 1.8V to 3.3V, which can limit the signal level translators we can work with since we end up with cascaded translators and that can be problematic if not designed correctly, especially I2C.
                              So, the SCH for that module is required for me to help further.
                              Sorry, but I can't do much else.

                              J 1 Reply Last reply 2 Aug 2024, 05:10 Reply Quote 0
                              • J
                                Jetson Nano @Vinny
                                last edited by 2 Aug 2024, 05:10

                                @Vinny Is there any other carrier board you recommend, because modalai doesn't have the rangefinder for sale yet?

                                V 1 Reply Last reply 2 Aug 2024, 05:31 Reply Quote 0
                                • V
                                  Vinny ModalAI Team @Jetson Nano
                                  last edited by 2 Aug 2024, 05:31

                                  Hi @Jetson-Nano
                                  Every time we try an OTS product, it is flakey due to level translation issues. So we have done our own internally, but not yet made it available standalone. It is on our roadmap to support these ST ToF modules, not just the VL53L1x, but others as well.

                                  The Starling V2 Front End has one of these, but we have not made that little board a standalone product yet: https://docs.modalai.com/M0173/#downward-range-finder-and-flir-lepton

                                  J 1 Reply Last reply 2 Aug 2024, 05:52 Reply Quote 0
                                  • J
                                    Jetson Nano @Vinny
                                    last edited by 2 Aug 2024, 05:52

                                    @Vinny Thanks!

                                    V 1 Reply Last reply 2 Aug 2024, 05:57 Reply Quote 0
                                    • V
                                      Vinny ModalAI Team @Jetson Nano
                                      last edited by 2 Aug 2024, 05:57

                                      @Jetson-Nano
                                      I'll try my best to tag you once we make the M0157 for sale individually, but it relies specifically on the hardware circuits on M0173 to work.
                                      Again lots of interface nuances with these little ST sensors, and the newer ones are more painful to integrate since they are dual voltage. We are working that aspect now for future efforts. I know this does not help you now, but rest assured we are on it!

                                      J 1 Reply Last reply 2 Aug 2024, 12:56 Reply Quote 0
                                      • J
                                        Jetson Nano @Vinny
                                        last edited by 2 Aug 2024, 12:56

                                        @Vinny I saw that M0173 is available in the modalai website. If I get that board with the new image sensors and use it with voxl 2, can I get the VIO running with three tracking cameras?

                                        V 1 Reply Last reply 2 Aug 2024, 18:21 Reply Quote 0
                                        • V
                                          Vinny ModalAI Team @Jetson Nano
                                          last edited by 2 Aug 2024, 18:21

                                          Hi @Jetson-Nano
                                          Sorry, not my area of expertise.

                                          @modaltb, are you able to offer guidance here?
                                          Thanks!

                                          M 1 Reply Last reply 9 Aug 2024, 14:45 Reply Quote 0
                                          • M
                                            modaltb ModalAI Team @Vinny
                                            last edited by 9 Aug 2024, 14:45

                                            @Jetson-Nano not at this time and not with QVIO. We are working on multi cam VIO but can't provide any details or release dates really at this time.

                                            J 1 Reply Last reply 10 Aug 2024, 05:14 Reply Quote 1
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