not calling custom programs

Tagged: custom program

This topic has 2 replies, 2 voices, and was last updated 8 months, 2 weeks ago by charles.wackwitz.

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June 25, 2025 at 3:54 pm #1945

charles.wackwitz
Participant

Hi all,

I’ve recently purchased Chi.Bio for my lab and I am looking into creating custom programs where I have two media inputs which gradually change over time. I am interested in:
– keeping the cultures at a defined OD, similar to the original turbidostat functionality, but where after every sixth time the culture surpasses the set OD it will adjust the ratio of media inputs
– and another which allows for more zigzag functionality, in which an OD_min and OD_max is defined in a csv file, every dilution results in a change in media ratio
both of these programs therefore allow for gradual change in media towards an alternate carbon source.

I now want to test if these programs run in my chi.bio, however I am understanding how the custom programs are called. I’ve changed the predefined custom programs to simple tasks just to turn Pump 1 on, or add text to the terminal, however when I switch these programs on, nothing appears to happen.

Has anyone else experienced this issue when using custom programs? Happy to share more information if needed.

Best,
Charles

June 26, 2025 at 1:09 pm #1946

harrison
Keymaster

Hi, have you tried adding some print statement/s inside the custom programs so that it is obvious if the code is “getting there” or not? Further, just to cnfirm, are you selecting the correct custom program in the dropdown box in the GUI, then clicking to enable it?

June 27, 2025 at 8:46 am #1948

charles.wackwitz
Participant

Hi Harrison,

I’ve been able to get the Custom Programs called by deleting the line that calls the input parameters.csv

fname=’InputParameters_’ + str(M)+’.csv’

with open(fname, ‘rb’) as f:
reader = csv.reader(f)
listin = list(reader)
Params=listin[0]
addTerminal(M,’Running Program = ‘ + str(program) + ‘ on device ‘ + str(M))

There appeared to be an error in the way this line was read, I’ve therefore deleted it all. For my custom program I plan to call the csv files similarly but then within the custom programs, not within the function.

Thanks!
Charles
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