u/CoachZain

Two Camera Help, part 2
▲ 3 r/FTC

Two Camera Help, part 2

The kids still really want to try to use 2 camera this season for seeing and chasing objects, and one lookin down low to shut down the intake if the other team's nectar is being driven into. Happy to try to oblige them but... I am still failing to get two of the Gobilda Global shutter cameras to work for them.

If one is in USB 3 and the other in USB2, it works great, now that they have different USB names anyway.

But everybody cautions about using the USB2 port due to ESC sensitivity. No problem, a powered USB hub, that runs on +5 and is powered from the +5 rail of the CH or EH, right?

I got them this one and they are having all kinds of problems:

https://www.coolgear.com/product/usb31-4-port-mini-hub-component-board-with-esd-surge-protection

When it sees the two cameras it's great. It's just that it very often does not. On robot power up both are often not found and errors are thrown. If they power up the robot with CH USB--to--USB-Hub cable unplugged, and then plug it in after everybody has powered up things are better. But there are still the blem-bong sounds of the cameras being lost and then coming back, from time to time.

It behaves a lot like there isn't enough power from the hub to the cameras and things are winking out. But the whole point of the powered USB hub is to obviate this. And I'm pretty sure I have the power soldered right (can't let the kids solder...) and the external charging power light on the PCB is on.

They are progressing with their coding without the hub. But I fear USB2 will get them once the weather cools

Anybody got advice on a small +5 powered hub that has been working for them? Or what I might try with this one?

Thanks in advance!

u/CoachZain — 7 days ago
▲ 5 r/FTC

Dual Gobilda Global Shutter Camera Issue

The kids are experimenting with the newer Gobilda camera 3122-0004-0001. And want to try a pair of them each with their own pipeline. An immediate issue that comes up is the two we have both have the USB name "UC852" and it's not immediately apparent how to give them new names. And the CH does not like two cameras with the same name on USB. Anybody know how to assign these a new name, if it's possible in the "Configure robot" menus they are not seeing it.

Secondarily, if this first problem can be overcome, does anybody know if the USB2 port is fast enough to support a second one? (probably only in 640x480 mode)

reddit.com
u/CoachZain — 2 months ago