AR0144 on voxl2 J8? Or alternative 4x AR0144 Config?

jameskuesel

Will an AR0144 work on J8? Would probably need a Micro-coax Adapter? Not sure if its one output maps to Lower or Upper.

But couldn't find anything about if J8 would support AR0144. At the very least i was able to configure the camera-server with a AR0144 on both J8 Upper and Lower and it succeeded (although cannot test since i cannot connect the actual sensor).

Is this something that has been tested in the past?

For some context, am trying to see if we can run 4 AR0144s, 1 imx412, and 1 pmd-tof-liow2. Potentially some other sorting of these would work. (Such as putting the imx412 on J8 and another AR0144 on J6. Totally okay if it isn't an officially supported config haha can internally test.

current config with the starling breakout board looks like, looking to add one more AR0144

J6_LOWER_SENSOR="ar0144-fsin-combo"
J6_LOWER_NAME="arone"
J6_LOWER_ROTATE="true"

J6_LOWER_COMBO1_SENSOR="ar0144-fsin-combo"
J6_LOWER_COMBO1_NAME="artwo"
J6_LOWER_COMBO1_ROTATE="false"

J6_UPPER_SENSOR="imx412-fpv"
J6_UPPER_NAME="hires"
J6_UPPER_ROTATE="false"

J7_LOWER_SENSOR="ar0144-fsin"
J7_LOWER_NAME="arthree"
J7_LOWER_ROTATE="true"

J7_UPPER_SENSOR="pmd-tof-liow2"
J7_UPPER_NAME="tof"
J7_UPPER_ROTATE="false"

J8_UPPER_SENSOR=""
J8_UPPER_NAME=""
J8_UPPER_ROTATE="false"

Any help much appreciated, Thanks!

Best,
James

Alex Kushleyev

Hi @jameskuesel ,

Please check these threads:

Specifically, look for the post with these details:

OK, I was able to confirm this configuration:

VOXL2
M0173 + 3x AR0144 + 1x IMX412 (C27 config)
M0155 + 1x AR0144 plugged into J8
AR0144 i2c slave id change via resistor
small camera driver modification for new slave id
also verified the synchronization between the 4 AR0144

You will need to switch the CCI slave id of one of the AR0144 to avoid bus conflicts, as described in the posts, otherwise no issues.

Do you need all 4 AR0144 sync'ed to the same sync pulse (as normally is done in our dual AR0144 config) ? Please keep in mind that sync may not make sense if the 4 cameras are using different exposure values -- on AR0144 cameras, the sync pulse triggers Start of Exposure, so center of exposure could still be different in the "sync'ed" cameras if the exposure length is different. We can discuss more.

Alex