# API & Data Access **URL:** https://forum.pioreactor.com/c/software/api-data-access/15.md [Latest](https://forum.pioreactor.com/latest.md) · [Categories](https://forum.pioreactor.com/categories.md) · [Tags](https://forum.pioreactor.com/tags.md) --- ## [About the API & Data Access category](https://forum.pioreactor.com/t/about-the-api-data-access-category/21)
**Author:** [@CamDavidsonPilon](https://forum.pioreactor.com/u/CamDavidsonPilon)\ **Replies:** 0
Discussion and help for the Pioreactor’s API (Python, CLI, HTTP), and how to access data (MQTT, SQL). We may move requests and issues to our Github repositories. --- ## [Issue with my calibration](https://forum.pioreactor.com/t/issue-with-my-calibration/1264)
**Author:** [@honorex](https://forum.pioreactor.com/u/honorex)\ **Replies:** 1\ **Last updated:** [October 22, 2026, 5:12pm UTC](https://forum.pioreactor.com/t/issue-with-my-calibration/1264 "2026-10-22T17:12:02Z")
Hello everybody, I tried calibrating the OD reading from the Pioreactor to that of the 600nm spectrophotometer. But after following the protocol and entering my data (ranging from 0.04 to 2.024, in 7 dilutions), in asce… --- ## [Project cloud database](https://forum.pioreactor.com/t/project-cloud-database/135)
**Author:** [@Martin](https://forum.pioreactor.com/u/Martin)\ **Replies:** 10\ **Last updated:** [November 7, 2025, 11:55am UTC](https://forum.pioreactor.com/t/project-cloud-database/135 "2025-11-07T11:55:25Z")
How difficult would it be to set up an automated means of sending run data from multiple users to a central project database? For example, when collaborating on open data projects, it would be amazing if anyone interest… --- ## [Accessing OD voltage readings](https://forum.pioreactor.com/t/accessing-od-voltage-readings/925)
**Author:** [@davidhcsic](https://forum.pioreactor.com/u/davidhcsic)\ **Replies:** 1\ **Last updated:** [September 17, 2025, 1:20am UTC](https://forum.pioreactor.com/t/accessing-od-voltage-readings/925 "2025-09-17T01:20:54Z")
Hi everyone, Is it possible to access the unprocessed voltage readings from the OD sensors directly? I’d like to log or analyze the raw ADC values before any processing/calibration. Would this require a custom script, o… --- ## [Automation/job yaml file configuring](https://forum.pioreactor.com/t/automation-job-yaml-file-configuring/676)
**Author:** [@rafik.n](https://forum.pioreactor.com/u/rafik.n)\ **Replies:** 1\ **Last updated:** [February 24, 2025, 3:53pm UTC](https://forum.pioreactor.com/t/automation-job-yaml-file-configuring/676 "2025-02-24T15:53:44Z")
Hey @CamDavidsonPilon, Hope youre doing well. Quick question for you. Been chasing a bug in a custom dosing automation subclass I wrote. I had used the same name(variable) in the yaml file for the job name and one of t… --- ## [Documentation regarding the API endpoints](https://forum.pioreactor.com/t/documentation-regarding-the-api-endpoints/486)
**Author:** [@linx5o](https://forum.pioreactor.com/u/linx5o)\ **Replies:** 3\ **Last updated:** [October 29, 2024, 11:29pm UTC](https://forum.pioreactor.com/t/documentation-regarding-the-api-endpoints/486 "2024-10-29T23:29:13Z")
I can’t seem to find any documentation regarding the payload for API access to the PioReactor. I have been looking at the requests sent by the UI so far but recently updated the PioReactor and realized that payloads hav… --- ## [For querying readings what is filter\_mod\_N](https://forum.pioreactor.com/t/for-querying-readings-what-is-filter-mod-n/497)
**Author:** [@linx5o](https://forum.pioreactor.com/u/linx5o)\ **Replies:** 2\ **Last updated:** [October 16, 2024, 11:49pm UTC](https://forum.pioreactor.com/t/for-querying-readings-what-is-filter-mod-n/497 "2024-10-16T23:49:19Z")
In the params to say (http://pioreactor.local/api/experiments/{experiment}/time\_series/od\_readings\_filtered) what is the filter\_mod\_N value and how should it be determined? --- ## [Update issue - pio update app error on workers](https://forum.pioreactor.com/t/update-issue-pio-update-app-error-on-workers/317)
**Author:** [@sharknaro](https://forum.pioreactor.com/u/sharknaro)\ **Replies:** 1\ **Last updated:** [May 23, 2024, 3:53pm UTC](https://forum.pioreactor.com/t/update-issue-pio-update-app-error-on-workers/317 "2024-05-23T15:53:12Z")
Dear Pioreactor team, I tried to update the software on the workers by running pios update from the leader or pio update app on the workers because in the leader only image the workers got stuck in software version 22.5… --- ## [OD calibration crash due to unexpected end of data](https://forum.pioreactor.com/t/od-calibration-crash-due-to-unexpected-end-of-data/302)
**Author:** [@sharknaro](https://forum.pioreactor.com/u/sharknaro)\ **Replies:** 1\ **Last updated:** [May 10, 2024, 1:13pm UTC](https://forum.pioreactor.com/t/od-calibration-crash-due-to-unexpected-end-of-data/302 "2024-05-10T13:13:26Z")
Hi everyone, Now and then, I mistype a letter such as “ø” during the OD calibration of the Pioreactors and this causes the entire calibration process to crash and get terminated! For instance, I was calibrating for OD a… --- ## [Cannot run pio --help in the CLI](https://forum.pioreactor.com/t/cannot-run-pio-help-in-the-cli/290)
**Author:** [@sharknaro](https://forum.pioreactor.com/u/sharknaro)\ **Replies:** 7\ **Last updated:** [May 2, 2024, 6:37pm UTC](https://forum.pioreactor.com/t/cannot-run-pio-help-in-the-cli/290 "2024-05-02T18:37:35Z")
Hi everyone, I updated all my cluster to the latest software version (24.4.11), and tried to run some commands in the command line interface (CLI) of workers, such as pio --help, however, I got the following error log: … --- ## [Cannot access UI through pioreactor.local](https://forum.pioreactor.com/t/cannot-access-ui-through-pioreactor-local/252)
**Author:** [@sharknaro](https://forum.pioreactor.com/u/sharknaro)\ **Replies:** 11\ **Last updated:** [March 27, 2024, 6:53pm UTC](https://forum.pioreactor.com/t/cannot-access-ui-through-pioreactor-local/252 "2024-03-27T18:53:38Z")
Hi everyone, I am trying to access the user interface (UI) through pioreactor.local. However I cannot connect to the server if I do not connect through using the \.local. This occured after I accidentally a… --- ## [Export Data: Workers](https://forum.pioreactor.com/t/export-data-workers/241)
**Author:** [@sharknaro](https://forum.pioreactor.com/u/sharknaro)\ **Replies:** 11\ **Last updated:** [March 5, 2024, 4:22pm UTC](https://forum.pioreactor.com/t/export-data-workers/241 "2024-03-05T16:22:58Z")
Hi everyone, I am trying to export the data on a worker pioreactor by creating an ´export\_data.sh´ file by following the instructions in Export and import your data \> Export your data. This works for leader pioreactors,… --- ## [How can I save data in a dosing automation](https://forum.pioreactor.com/t/how-can-i-save-data-in-a-dosing-automation/71)
**Author:** [@realPeteDavidson](https://forum.pioreactor.com/u/realPeteDavidson)\ **Replies:** 30\ **Last updated:** [March 8, 2023, 1:43am UTC](https://forum.pioreactor.com/t/how-can-i-save-data-in-a-dosing-automation/71 "2023-03-08T01:43:22Z")
I’m playing around with your default turbidostat automation and I want to calculate its growth rate over time. I calculate my growth every time a dilution event occurs. My growth rate is calculated via ( end\_normalized\_…