ModalAI Forum

Eric Katzfey

As far as I know no one has ever tried this. I don't think HITL is supported by ardupilot (was in the past) but there may be some sort of Simulation on Hardware (SoH) that you could try to get running on VOXL2. I'm guessing it wouldn't be easy.

Maxwell Schaefer

The ExpressLRS receiver requires* one additional wire. The ghost atto only connects one wire to the VOXL RC RX pin, but the ELRS receiver will also require a connection to the VOXL RC TX pin, otherwise the wiring is identical. Pre-crimped wires can be found easily for the JST GH connectors (J19) to make adding connections simple.

*You could leave the receiver's RX line (the VOXL's RC TX) disconnected; this would make updates and other control using the voxl-elrs application impossible but basic RC functionality would work.

Adrian Hidalgo

@Colby-Howell New order# 8874.

Adrian Hidalgo

@Colby-Howell

Thanks for providing that information. Was it just one battery that was faulty? If so, we will ship a replacement battery to you. Please provide your original order number so we can look up your information.

Adrian Hidalgo

Hello @colby-howell

Sorry to hear that the battery arrived dead. Let's work to fix that.
I'm guessing that the battery will no longer hold a charge since it was fully drained?

Vinny

Hi @saegsali
yes, I can help with this. Sorry for the delay in responding here...
I will email you to enable the schematic transfer and review setup.
For your schematic, these items will ensure a speedy and seamless review:

Searchable PDF
All items annotated and page numbers correct
Off page references if multi-page
Caps and R's should have their ratings visible (voltages, power, values)
A simple block diagram to help me understand what you are trying to do.

Thanks!

Maxwell Schaefer

Our recommended and most well-supported RC system would be ExpressLRS. We have our own receiver available here, and a transmitter pre-programmed to work with many of our drones available here.
Beyond these options, nearly any commercially available ExpressLRS transmitters and receivers would work and can be found cheaply. Follow the guidance here to make sure your chosen devices are compatible if you choose to look elsewhere.

If you would like to continue using your current controller and transmitter module, you will need to find a replacement ghst atto receiver which unfortunately don't seem to be available anymore.

Vinny

Hi @moderator
The operating range is 2-6S input VBAT.
We currently have no plans for >6S at this time on the ESCs.

The 40V is a part rating which gives margin for safe operating limits, transient immunity, or other electrical effects. This is documented to instill confidence in our users that we selected quality parts capable of handling various conditions outside of nominal such as back-EMF, energy dumps, incorrect wiring, or severe transients.

We are keeping tabs on the trends in this market and will ascertain for future products if increased operating points are warranted broadly. I do see up to 8S is becoming more popular, but it will increase size and cost of products to enable that capability.
Thanks!

Vinny

Hi @rowan-dempster
Yes, we know we purposely put the SPI3 bus in two locations. It was intentional, but we have since learned not the best approach for all customers, so we have no plans to do that again. The CS_N issue you are seeing is not surprising.
That being said, if you keep continuing with the SW configuration (which may not be easily solved and I do not think we've done that internally yet) our only suggestion for options right now are as follows:

Use a different SPI bus. J3/J5 have other options. It is a smaller "Ask" to enable SPI11 on J5 than fix SPI3.
https://docs.modalai.com/voxl2-qups/
Rework (i.e,: remove) the IMU (does not help if you need that IMU however). We can give you a waiver on the RMA exclusions on these boards should something else arise not related to that rework process.

Hope that helps, and sorry if it's not the news you were hoping for.

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