Hi @Nando75
A shielded, impedance-controlled flex was our go-to solution in the early days, and we still offer a few legacy adapters that use it. These provide excellent signal integrity and EMI shielding. However, they’re limited in deployment flexibility; each flex must be meticulously designed for a specific routing path.

Coax, on the other hand, greatly improves routing versatility and can be deployed across many platforms. The trade-off is reduced signal distance and slightly degraded signal integrity compared to a tuned flex.

Ultimately, it’s a system-level tradeoff. We’ve transitioned to coax as our mainstream solution in recent years, driven by customer demand for easier installation without the constraints of custom flex circuits.

Only your team can decide what's more important and hopefully we can enable you either way.

Hi @Nando75
If it was less than 200mm, yes. 200mm is at your own risk, and make sure your SW team knows how to reach out and request slower MIPI CLK speeds in the event of signal integrity failures (camera failures).
Keep us posted.
Thanks!

@Jetson-Nano There are multiple sources of delay in that control pipeline but I would guess that the Doodle link and the serial link to the FC are probably the 2 biggest sources of delay. Can you run any experiments to help figure that out? Are you able to swap out the Doodle with WiFi to see how that affects the delay? Can you run PX4 directly on VOXL 2?

@nitinpatil Hi Nitin, we don't know what algorithm you are trying to develop. You'll have to choose sensors based on what algorithm you are trying to develop.

@SystemBrute Instructions can be found here: https://docs.modalai.com/sku/

@Rishi-gnanasegar There is not going to be an easy way to install after we have built the drone. It is not meant to be plug and play as the plastics are different based on which sensors have been ordered when the drone is ordered.

@adiprin1 On Ardupilot there is currently no way to use apps side UARTs (Some day we will add a method to use them). So, you would have to use one of the 3 UARTs attached to the DSP. If you removed the RC or the GPS and used that port then, theoretically, it could work. However, we have not tried that so can't make any guarantees. Also on PX4 you can use an apps side UART if there is one available on an add-on board. And, as you mention, you could use an SBUS RC on the VOXL 2 IO board and free up the standard RC UART.

@owf226 In the log you can see that at 2:52 it takes off. Up until then the motor RPMS are close but not equal. Is that the part you are talking about? After takeoff it is in stabilized mode and so it is trying to level itself and that makes the motor speeds quite a bit different as expected.

@adiprin1 With Ardupilot the VOXL 2 IO board can only be used for PWM output. With PX4 it can also be used for SBUS RC. So, unfortunately, you cannot connect that WASP-200 to the VOXL 2 IO board.

Hi @SKA
Apologies no one responded promptly.
From what I gather, these are best to be sent back as an RMA and we can try to recover them.

D1 (green) is an indication of the local 3.3V power being Good. So, that implies you have 3.8V input, and the 3.3V reg is OK.
DS2 (RGB) is controlled by Qty-3 GPIOs from the SoC. This can briefly blink on boot until the GPIOs are configured by apps software.
D2 (green) is the 5V USB VBUS USB1 (10-pin) port power indicator, which only comes ON after the QRB5165 boots and Apps controls the GPIO to turn the VBUS ON.

On failed SW loads, it is common to diagnose that by seeing DS2 or D2 blink, which indicates boot loops. D1 should NEVER go off, if so, something is wrong in HW or cabling.

We do caution any customer that sets up their own CI or internal validation automation to include a nice pause before repeated power cycles. A common 5 second rule is good to let the large caps discharge, or certain ICs will never fully reset. This is the most common cause of "bricking" devices.

The RMA is your best bet here and we can try to recover them for you, or diagnose for any other issues: https://www.modalai.com/pages/rma