How to Program Test Tools with Python - Workbench Wednesdays 66

Hm, Not sure what happened to the link above. But here the GitHub repo:

https://github.com/baldengineer/baldee-plot

FYI. The "tools" directory has random snippets of code I was writing to figure out things for the larger program. "pyvisa_starting_point.py" might be a good one since it is the basic lines to do an IDN. (Uncomment the rm.list_resources() to see resource IDs.)

Hey, Thanks for such a nice episode. I'm working through getting my electronic load to talk modbus over usb and I'm running into some issues with getting everything working. Specifically, just initializing the connection to the instrument. 

I think the code you had uploaded would be a huge help as a guide. However, when I click the link to access the code, I get a 404 error saying that the page doesn't exist anymore. Do you still have that sample code? And is there I way that I can still access it?

Thanks you so much!

Hm, Not sure what happened to the link above. But here the GitHub repo:

https://github.com/baldengineer/baldee-plot

FYI. The "tools" directory has random snippets of code I was writing to figure out things for the larger program. "pyvisa_starting_point.py" might be a good one since it is the basic lines to do an IDN. (Uncomment the rm.list_resources() to see resource IDs.)

Great video. I came here looking for the sample code to try at my rasp-pi but it seems removed. Could you please repost it?

Also baud_rate won't have any effect on a GPIB device.

Make sure you have a module that supports GPIB. You can verify by running "pyvisa-info" on the command line. It'll give the name of the module there (or suggest one to install.)

Hello I am trying to establish an GPIB connection with a HP 4140B using pyvisa, however it gives me an error: "ValueError: No class registered for InterfaceType.gpib, INTFC".

If anyone has any tips or pointers, I would greatly appreciate it! 

Current code right now:

import pyvisa
from time import sleep

rm = pyvisa.ResourceManager()
hp_dmm = rm.open_resource('GPIB0::INTFC')

hp_dmm.baud_rate = 11520

print(hp_dmm.query("*IDN?"))
print(hp_dmm.query("MEAS?").strip())

I entered the professional world in 2001. At the time, test equipment automation was still very bewildering. I cannot imagine setting something up in the 1980s or 1990s. There were so many standards to choose from!

Great episode.

I watched one group build a complex HPIB connected measurement system back in the early 1980's.

I think I would rather gnaw off a limb with my teeth.

I later interviewed with HP and they were rather unhappy with my comments about the HPIB they created. Needless to say I did not get the job.

In the 1990's I was involved with building the specifications and doing the initial source selection for a major automated test facility, so I am very intrigued about setting up a small automated lab.

Neat! Very cool and clever project. Thanks for sharing. (I missed it back in 2020.)