#apertus IRC Channel Logs

anyone?

I'm here, I guess ;)

how is the color charting going?

have you had the session with vup for darkframe capture ?

for some reason I have some kind of a connectivity issue with the hdmi modules, only one is working reliably unfortunately

ah, did the screw not solvethe problem..

we are assembling new hdmi plugin modules on the 21st

to verify if its the slot or the module

very good, any news Bertl ?

yes, there has been quite some progress on the work we have been doing for LAM/INT

basically decoupling the input and output pipeline, getting high bandwidth HDMI raw data transfer working and testing both square center cutout full frame as well as binned data

new scripts have been created to control those address generators (now used for both, capture and HDMI output) and a bunch of new raw output modes have been tested

we also increased the capture buffer to 3/4th of the entire memory of the microzed, allowing for 32 frames to be captured into memory

cool, how is the realtime part on the CPU behaving, did you dedicate one CPU or is there no issue with the scripts latency ?

the script is currently not running at realtime and is a simple python script, the timing might not be perfect but it seems to be sufficient for testing

as the capture and the HDMI output is still handled from the FPGA, the script has quite some wiggleroom to update the generators

the trigger is part of the script, but it is okay to leave the trigger on, which will do one exposure after the other

the entire setup was tested with full frame binning and we achieved 99.2 FPS with 10ms exposure there

very nice

would be interesting to measure what frametime and deviations we get from ideal FPS

yes, if the 40ms between frames is maintained

I'd say there will be some jitter caused by interrupt latency as well as the script sending the trigger

but is it 39.99ms and then 40.01, or 35ms then 45ms, thats what I would be interested in

also using something faster than python (C or Rust for example) should bring the jitter down there

very nice

and are the scripts released already?

exactly :)

the scripts are not secret, but they need some more testing and cleanup (so will be uploaded soon)

that's it from my side

many thanks

sadly they only have one defined illuminant

I would have to bring the other

I also started working on improving the dng writing in the recorder so that it is possible to user-specify metadata tags

thats it from my side

quick updates from my side: hdmi plugin module pcbs have been received from oshpark and manual assembly is currently planned for the 21st

no detailed inspection yet, just a few checks ...

but any showstoppers so far or just some manual rework required here and there?

excellent

but IIRC we requested them not to be glued, so that should be fine as well

ok, anyone else with news or things to report?

thanks for the moderation!