@jameskuesel , it looks like EIS was merged to the main branch shortly after SDK 1.5.0 was released. If you have not updated you camera server, please do so : https://docs.modalai.com/camera-video/electronic-image-stabilization/#latest-source-code . You may also need to update libmodal-pipe library. Alex

Hi @Jetson-Nano Here is our info for Doodle Labs support: https://docs.modalai.com/cable-datasheets/#mcbl-00085 Sorry it's buried in a cable page, but it makes the case clear (we think) how to support Doodle [image: 1761072142690-b1fa4a9a-f883-4566-b3e2-ae9ab14b7264-image.png] regarding probing USB signals, unless you had a USB decoder on the scope, I do not think that will prove anything useful. You may be better off running usbview: Windows: USBTreeView by Uwe Sieber — uwe-sieber.de/usbtreeview_e.html It shows enumeration hierarchy, configuration descriptors, endpoints, VID/PID, power requirements, etc. Linux equivalent: Use usbview — it’s essentially the same utility (GTK front-end to lsusb). Hope that helps!

@emarcphera Huh, interesting. Okay, thanks for posting the update!

Hi @will-huang-oksi Are you willing to share some pics? Might be a cabling issue (GND loop or lack of a common GND), or some other intermittent connection causing your problems. It really is hard to debug without seeing the setup. Thanks! Vinny

@tom Thank you for your quick response. Do you have a model with these dimensions and technical specifications that is also waterproof, or is it possible for you to develop one? Thank you again in advance for your response.

@nickrobbins I would take at stinger as a place to start: https://www.modalai.com/products/stinger-vision-fpv?variant=48373207695664 It is on the Blue UAS list: https://www.diu.mil/blue-uas-cleared-list (Stinger Vision FPV)

Hi @Riccardo-Benedetti and @paul-foley , This issue is not common. There is a potential condition (which we are going to look into) when a MPA client crashes and does not close the pipes properly, the MPA server side will keep the allocated resources open. If the client crashes repeatedly, eventually there will be no more memory for the Kernel to allocate for the new pipes. Please check to make sure that you have no client processes that are subscribing to image streams and are crashing and restarting (perhaps restarting automatically by systemd). It is possible that a process that is not your test app is misbehaving for some reason and is causing this memory leak by continuous crashing and re-starting. Also, what if you just use voxl-inspect-cam to inspect the single camera stream and no other camera clients running, does the same issue happen? Alex

@Dmytro-Stolbovyi voxl2:~$ usb-devices |less [1/1] T: Bus=01 Lev=00 Prnt=00 Port=00 Cnt=00 Dev#= 1 Spd=480 MxCh= 1 Ver= 2.00 Cls=09(hub ) Sub=00 Prot=01 MxPS=64 #Cfgs= 1 P: Vendor=1d6b ProdID=0002 Rev=04.19 S: Manufacturer=Linux 4.19.125 xhci-hcd S: Product=xHCI Host Controller S: SerialNumber=xhci-hcd.0.auto #Ifs= 1 Cfg#= 1 Atr=e0 MxPwr=0mA I: If#= 0 Alt= 0 #EPs= 1 Cls=09(hub ) Sub=00 Prot=00 Driver=hub T: Bus=01 Lev=01 Prnt=01 Port=00 Cnt=01 Dev#= 2 Spd=480 MxCh= 5 Ver= 2.10 Cls=09(hub ) Sub=00 Prot=02 MxPS=64 #Cfgs= 1 P: Vendor=0424 ProdID=2744 Rev=02.21 S: Manufacturer=Microchip Tech S: Product=USB2744 #Ifs= 1 Cfg#= 1 Atr=e0 MxPwr=0mA I: If#= 0 Alt= 1 #EPs= 1 Cls=09(hub ) Sub=00 Prot=02 Driver=hub T: Bus=01 Lev=02 Prnt=02 Port=03 Cnt=01 Dev#= 3 Spd=480 MxCh= 0 Ver= 2.10 Cls=00(>ifc ) Sub=00 Prot=00 MxPS=64 #Cfgs= 1 P: Vendor=0bda ProdID=0811 Rev=02.00 S: Manufacturer=Realtek S: Product=802.11ac WLAN Adapter S: SerialNumber=00e04c000001 #Ifs= 1 Cfg#= 1 Atr=e0 MxPwr=500mA I: If#= 0 Alt= 0 #EPs= 6 Cls=ff(vend.) Sub=ff Prot=ff Driver=rtl88XXau T: Bus=01 Lev=02 Prnt=02 Port=04 Cnt=02 Dev#= 4 Spd=480 MxCh= 0 Ver= 2.01 Cls=00(>ifc ) Sub=00 Prot=00 MxPS=64 #Cfgs= 1 P: Vendor=0424 ProdID=2740 Rev=02.00 S: Manufacturer=Microchip Tech S: Product=Hub Controller #Ifs= 1 Cfg#= 1 Atr=c0 MxPwr=0mA I: If#= 0 Alt= 0 #EPs= 0 Cls=ff(vend.) Sub=ff Prot=ff Driver=(none) T: Bus=02 Lev=00 Prnt=00 Port=00 Cnt=00 Dev#= 1 Spd=10000 MxCh= 1 Ver= 3.10 Cls=09(hub ) Sub=00 Prot=03 MxPS= 9 #Cfgs= 1 P: Vendor=1d6b ProdID=0003 Rev=04.19 S: Manufacturer=Linux 4.19.125 xhci-hcd S: Product=xHCI Host Controller S: SerialNumber=xhci-hcd.0.auto #Ifs= 1 Cfg#= 1 Atr=e0 MxPwr=0mA I: If#= 0 Alt= 0 #EPs= 1 Cls=09(hub ) Sub=00 Prot=00 Driver=hub T: Bus=02 Lev=01 Prnt=01 Port=00 Cnt=01 Dev#= 2 Spd=5000 MxCh= 4 Ver= 3.20 Cls=09(hub ) Sub=00 Prot=03 MxPS= 9 #Cfgs= 1 P: Vendor=0424 ProdID=5744 Rev=02.21 S: Manufacturer=Microchip Tech S: Product=USB5744 #Ifs= 1 Cfg#= 1 Atr=e0 MxPwr=0mA I: If#= 0 Alt= 0 #EPs= 1 Cls=09(hub ) Sub=00 Prot=00 Driver=hub T: Bus=02 Lev=02 Prnt=02 Port=00 Cnt=01 Dev#= 3 Spd=5000 MxCh= 0 Ver= 3.20 Cls=00(>ifc ) Sub=00 Prot=00 MxPS= 9 #Cfgs= 1 P: Vendor=2c7c ProdID=0801 Rev=05.04 S: Manufacturer=Quectel S: Product=RM530N-GL S: SerialNumber=4543cb18 #Ifs= 5 Cfg#= 1 Atr=a0 MxPwr=896mA I: If#= 0 Alt= 0 #EPs= 2 Cls=ff(vend.) Sub=ff Prot=30 Driver=(none) I: If#= 1 Alt= 0 #EPs= 3 Cls=ff(vend.) Sub=00 Prot=40 Driver=(none) I: If#= 2 Alt= 0 #EPs= 3 Cls=ff(vend.) Sub=00 Prot=00 Driver=(none) I: If#= 3 Alt= 0 #EPs= 3 Cls=ff(vend.) Sub=00 Prot=00 Driver=(none) I: If#= 4 Alt= 0 #EPs= 3 Cls=ff(vend.) Sub=ff Prot=ff Driver=(none)

@Robbie-McCue yes this worked thank you so much Robbie!!

@owf226 As soon as PX4 thinks it has taken off then it is trying to level the drone but can't since there are no propellers on the drone. So, it keeps increasing the speed of the motors on the side that needs to come up. That all seems normal to me.

@Rupesh Apologies for the late reply It looks like there’s an issue with how the AprilTag system is relocalizing the drone. In my tests, the z-value appears to be misinterpreted, which could explain why your drone was climbing in altitude to correct its height estimate. We’re actively working on a fix.

@greg_s Great! Sounds good

Hi @QSL OK, keep us posted! Any, for any new issues, please be sure to start a new forum post so it is seen by the team. Thanks!

@fhaltmayer It's not something we've explored

@crowley stinger is our FPV drone solution: https://www.modalai.com/products/stinger-vision-fpv?variant=48373207695664 We offer various levels of kit that can include goggles, transmitter, etc.