Microhard Modems

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  Cannot connect to pDDL1800 on USB Carrier Board on Mac laptop
  • dzbosa  

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  Thanks @Chad-Sweet I'll give that a shot.
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  Microhard pmddl2450 long range testing
  • A Former User  

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  Hi @Aks , You might need to request help from Microhard on those two questions or maybe post a fresh forum topic specific to the MIMO question so our broader team sees it. The only thing I can caution about adding encryption to your data is to understand the difference between baud rate (or link rate) vs data throughput (or data rate). You may be lengthening the number of bits per packet to include the encryption info yet your effective baud rate is unchanged, hence your effective user data throughput can decrease hence making it appear you have lower rate rates despite the radio performing well. Something to think about. Usually the more complex the interface with error bits, check bits, encoding bits, etc, add more "overhead" to the link relative to the user data. Perfect example: USB2 with 480Mbps... most applications can only get ~300-340Mbps from it, despite running at 480.
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  Microhard Carrier Setup
  • tangotoo  

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  @Aks I was told by Microhard Support that this usually indicates a hardware problem that requires repair or replacement, but they also suggested to try reapplying the system firmware. Reapplying the firmware for the modem seems to have worked for my case.
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  Is pMDDL2450 compatible with pDDL2450 to fit Microhard Modem Add-on with USB Hub
  • Byron_Ch  

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  @Byron_Ch As long as it is the mini OEM module (snapshots shown below), it'll work. I know they had a few offerings when the 2x2 MIMO first came out that exceeded that, but any module using that format will work from a hardware perspective.
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  Connection form VOXL 2 J3 to MH add-on with USB Hub
  • Byron_Ch  

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  Hi @Byron_Ch , Thanks for your patience. Yes, you are correct, but I wanted to add a few notes. we are happy to review any schematic you make. If you want that, let us know and we can reach out to you using the email you registered with on this forum. the VBUS on V2 can supply a total of 2A, but due to pin limits (1A per pin) if you think you'll need that full 2A sustained (it's ok for burst/in-rush), I would use the 5VDC_IN rail (output of the eFuse) instead of VBUS, but you'll still need to use VBUS as the "host detect" function. you can start from our Altium package to get a jump start on connectors, pinouts, and pcb outline with mounting holes and connector placement here: https://docs.modalai.com/voxl2-connectors/#add-on-board-to-board-design-package And I would still keep the J5 mate even if you don't need any signals. You can pick up the GNDs and it will provide a solid mechanical function providing two points of contact. on your plug in board, be sure to do a 3D fit check. There are some high components on V2 and you need to pay attention to any high components on the back side (with the connector mates) of your design. V2 3D is here: https://storage.googleapis.com/modalai_public/modal_drawings/M0054_VOXL2_PVT_SIP_REVA.step Let us know if you have any other questions. We want to see your plug in board succeed the first time!
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  Does the Microhard Modem Add-on with USB Hub expose a viable UART to connect an External Flight Controller to VOXL 2?
  • Roy Wood  

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  @Vinny, great! Thanks!
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  Microhard pDDL Carrier USB Dongle accesing ethernet
  • Jan Hartmann  

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  Hi @Jan-Hartmann , If you review our MH carrier block diagram here: https://docs.modalai.com/microhard-add-on-datasheet/#block-diagram You'll notice we unfortunately do not expose the other Microhard Ethernet port. I'm not optimistic there is even a way to get it with blue-wires. Sorry about that. For S.BUS support, we offer a small standalone product noted here: https://docs.modalai.com/voxl2-io/ We think that is a great little gadget that expands your PWM and I/O options and is meant for Voxl2. Let us know if you have any other questions!
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  Molex microhard potential range
  • Eli Pollack  

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  Thank you for the help! Will update this post when we are finished testing.
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  Microhard MDK-M0048-2 to Android
  • tangotoo  

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  @tangotoo Awesome, thanks for the feedback.
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  Question regarding the Microhard Mesh operation mode
  • Kyungtaek Oh 0  

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  We do not have any experience at this point with Microhard's meshing algorithm. You could reach out to Microhard?
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  Microhard failing to connect
  • evigdorchik  

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  @Viswanathan-R Our Microhard add-on boards are purely Microhard -> ethernet adapters, that may be more of a question for Microhard themselves. The antennas that we ship with support multiple frequencies so if you have a specific frequency you are using you may get better performance with antennas that tailored to that specific frequency.
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  Connection interruption every 30 seconds
  • Ansel Misfeldt  

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  @Chad-Sweet Yes, it usually is a good starting point. I do want to mention it took us 3 or 4 separate resets of all related radio settings before this particular glitch went away.
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  Microhard Add ON
  • jsearlePSU_ARL  

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  Thanks, I missed that going through the documentation. We would prefer to use the direct add on but what we already purchased is https://www.airborneinnovations.com/ai/products/picoradio/ We also need to incorporate FIPS 140.2 validated radios. Currently microhard does not have FIPS 140.2 Validated radios and Doodle labs in in process. Doodle labs is borderline for us on throughput for our application. So we need to see about integrating different radios which could require a adaptor cable.
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  Microhard Modem not powering on
  • Daniel Ryu  

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  @Daniel-Ryu Great!
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  Sony RXO over USB
  • Matt Goddard  

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  @Aaron-Bottke Yes, that's seems like it would be a nice addition to voxl-gphoto2. We'll put it on our to-do list.
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  Flight Deck with Microhard Radio not connecting to QGC
  • Daniel Ryu  

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  @Daniel-Ryu Great to hear! I appreciate your patience with this.