# Support **URL:** https://forum.qoitech.com/c/community-support/12.md [Latest](https://forum.qoitech.com/latest.md) · [Categories](https://forum.qoitech.com/categories.md) --- ## [Ace rebooting on power enable for certain DUT](https://forum.qoitech.com/t/ace-rebooting-on-power-enable-for-certain-dut/579)
**Author:** [@andyshinn](https://forum.qoitech.com/u/andyshinn)\ **Replies:** 1\ **Last updated:** [September 21, 2026, 6:53am UTC](https://forum.qoitech.com/t/ace-rebooting-on-power-enable-for-certain-dut/579 "2026-09-21T06:53:25Z")
I’m doing some power testing of MPPT charger devices hooked directly to the Ace power terminals. Nothing too special. One certain MPPT charger / 5V boost board immediately reboots the Ace when I enable power to it in the… --- ## [File saving after long test](https://forum.qoitech.com/t/file-saving-after-long-test/577)
**Author:** [@rneff](https://forum.qoitech.com/u/rneff)\ **Replies:** 1\ **Last updated:** [July 20, 2026, 7:01am UTC](https://forum.qoitech.com/t/file-saving-after-long-test/577 "2026-07-20T07:01:39Z")
I recently just ran a weekend test for a product using the battery emulation feature and am noticing that the time it takes to save the project is taking extremely long. The test took a total of 2d 21h 32m, and I had set… --- ## [Otii Arc reverse current whlie not in sink mode](https://forum.qoitech.com/t/otii-arc-reverse-current-whlie-not-in-sink-mode/571)
**Author:** [@dstude](https://forum.qoitech.com/u/dstude)\ **Replies:** 3\ **Last updated:** [May 19, 2026, 7:05am UTC](https://forum.qoitech.com/t/otii-arc-reverse-current-whlie-not-in-sink-mode/571 "2026-05-19T07:05:51Z")
I have a charger trying to drive about 600 mA constant current into the Otii Arc while at 4V. the current actually driven increases as i reduce the voltage so it appears I’m running into some limitation. Is this practi… --- ## [Building a profile file for the Battery Simulator](https://forum.qoitech.com/t/building-a-profile-file-for-the-battery-simulator/557)
**Author:** [@moudshoorn](https://forum.qoitech.com/u/moudshoorn)\ **Replies:** 1\ **Last updated:** [September 25, 2025, 1:54pm UTC](https://forum.qoitech.com/t/building-a-profile-file-for-the-battery-simulator/557 "2025-09-25T13:54:22Z")
I built this battery profile - A triple 18650 cell 3.7V 6600ma battery. I don’t think my file is quite right and was hoping someone could look at it and comment on what i may have done wrong.. {“battery”:{“model”:“1S3P\_… --- ## [OTII-ACE-PRO not powering on / "Failed to open COM" error](https://forum.qoitech.com/t/otii-ace-pro-not-powering-on-failed-to-open-com-error/556)
**Author:** [@polgero](https://forum.qoitech.com/u/polgero)\ **Replies:** 1\ **Last updated:** [September 22, 2025, 6:20am UTC](https://forum.qoitech.com/t/otii-ace-pro-not-powering-on-failed-to-open-com-error/556 "2025-09-22T06:20:10Z")
Hello Qoitech Community, I’m seeking some urgent assistance with my OTII-ACE-PRO. I recently used it to power a Starlink device, and unfortunately, it no longer seems to be functional. When I connect the OTII-ACE-PRO t… --- ## [Subject: Inquiry about Remote Ampere-Hour Monitoring for Forklift Batteries](https://forum.qoitech.com/t/subject-inquiry-about-remote-ampere-hour-monitoring-for-forklift-batteries/555)
**Author:** [@eugeny177](https://forum.qoitech.com/u/eugeny177)\ **Replies:** 0\ **Last updated:** [August 27, 2025, 6:43am UTC](https://forum.qoitech.com/t/subject-inquiry-about-remote-ampere-hour-monitoring-for-forklift-batteries/555 "2025-08-27T06:43:51Z")
Good day, Our company specializes in the installation and custom assembly of battery packs for cargo forklifts and electric trolleys. To ensure optimal battery performance and longevity for our clients, I need to monit… --- ## [Arc unresponsive](https://forum.qoitech.com/t/arc-unresponsive/554)
**Author:** [@hi1](https://forum.qoitech.com/u/hi1)\ **Replies:** 2\ **Last updated:** [July 28, 2025, 9:55am UTC](https://forum.qoitech.com/t/arc-unresponsive/554 "2025-07-28T09:55:51Z")
After I pressed and held the reset button on its back until an audible click occurred, the Arc has gone dark. No serial port visible (Linux), no blinking LED, no nothing. What state have I entered, and how do I exit it? … --- ## [Change UART Line terminator 3.x.x](https://forum.qoitech.com/t/change-uart-line-terminator-3-x-x/553)
**Author:** [@sleinwoib](https://forum.qoitech.com/u/sleinwoib)\ **Replies:** 1\ **Last updated:** [July 28, 2025, 6:04am UTC](https://forum.qoitech.com/t/change-uart-line-terminator-3-x-x/553 "2025-07-28T06:04:08Z")
Hello, Coming from version 2.x to the version 3.x, I fail to find how to change the line terminator and adding an external UART to the recording. Do I miss something or is this option not available on version 3.5.5 of… --- ## [Otii Arc 1.0 Standard Software request](https://forum.qoitech.com/t/otii-arc-1-0-standard-software-request/544)
**Author:** [@purgasa](https://forum.qoitech.com/u/purgasa)\ **Replies:** 1\ **Last updated:** [May 22, 2025, 7:42am UTC](https://forum.qoitech.com/t/otii-arc-1-0-standard-software-request/544 "2025-05-22T07:42:40Z")
Case fixed, than you very much. --- ## [I want Help with Analyzing Battery Data Using Otii Toolbox](https://forum.qoitech.com/t/i-want-help-with-analyzing-battery-data-using-otii-toolbox/542)
**Author:** [@alphafox](https://forum.qoitech.com/u/alphafox)\ **Replies:** 0\ **Last updated:** [April 28, 2025, 6:09pm UTC](https://forum.qoitech.com/t/i-want-help-with-analyzing-battery-data-using-otii-toolbox/542 "2025-04-28T18:09:11Z")
Hey everyone! I am using the Otii Battery Toolbox to monitor battery consumption for my project but I am running into a few issues with analyzing the data. I am not entirely sure how to best visualize the trends over t… --- ## [\[resolved\] How to set 5V output?](https://forum.qoitech.com/t/resolved-how-to-set-5v-output/537)
**Author:** [@nboulay](https://forum.qoitech.com/u/nboulay)\ **Replies:** 2\ **Last updated:** [April 17, 2025, 6:29am UTC](https://forum.qoitech.com/t/resolved-how-to-set-5v-output/537 "2025-04-17T06:29:58Z")
I use ARC1.0 with Otii 3.5.3 with DC input and USB. The maximum voltage is 4.55V. In the datasheet, it said to use the “main current : high range” to enable the 5v, but without success. --- ## [Battery Profiling - 4 Wire mode](https://forum.qoitech.com/t/battery-profiling-4-wire-mode/496)
**Author:** [@ggc84](https://forum.qoitech.com/u/ggc84)\ **Replies:** 9\ **Last updated:** [April 11, 2025, 6:59am UTC](https://forum.qoitech.com/t/battery-profiling-4-wire-mode/496 "2025-04-11T06:59:49Z")
Hi, I have a question regarding the battery profiling toolbox and if it is recommended to connect the battery with the 4-wire method to avoid the resistance of the leads. Thanks in advance --- ## [This project contains incomplete or corrupted data that is not compatible with the otii software](https://forum.qoitech.com/t/this-project-contains-incomplete-or-corrupted-data-that-is-not-compatible-with-the-otii-software/528)
**Author:** [@hugo.nadal](https://forum.qoitech.com/u/hugo.nadal)\ **Replies:** 3\ **Last updated:** [March 31, 2025, 6:17am UTC](https://forum.qoitech.com/t/this-project-contains-incomplete-or-corrupted-data-that-is-not-compatible-with-the-otii-software/528 "2025-03-31T06:17:09Z")
Hi, I’ve had a data backup problem since I upgraded to version 3. I’m currently on version 3.5.3. Here’s what I do: in the software I record the consumption and the uart logs (here 57600). I make a recording that lasts … --- ## [How to setup a event queue for handling multiple triggers from GitHub](https://forum.qoitech.com/t/how-to-setup-a-event-queue-for-handling-multiple-triggers-from-github/531)
**Author:** [@suresh](https://forum.qoitech.com/u/suresh)\ **Replies:** 1\ **Last updated:** [March 28, 2025, 4:14pm UTC](https://forum.qoitech.com/t/how-to-setup-a-event-queue-for-handling-multiple-triggers-from-github/531 "2025-03-28T16:14:52Z")
Hi I would like to check how to setup a wait event queue for handling multiple event triggers from GitHub Actions potentially from multiple repositories to utilize the automation tool box. So that the existing script whi… --- ## [Feature request: Otii TCP API](https://forum.qoitech.com/t/feature-request-otii-tcp-api/525)
**Author:** [@jarne.piessens](https://forum.qoitech.com/u/jarne.piessens)\ **Replies:** 1\ **Last updated:** [February 5, 2025, 1:16pm UTC](https://forum.qoitech.com/t/feature-request-otii-tcp-api/525 "2025-02-05T13:16:43Z")
I would like to see which channels are enabled in the recording. enabled\_channels = recording.get\_enabled\_channels(device.id) I try to see which channels have data using this code. # Define all possible Otii channels … --- ## [Significant voltage fluctuations on device output](https://forum.qoitech.com/t/significant-voltage-fluctuations-on-device-output/523)
**Author:** [@kablek](https://forum.qoitech.com/u/kablek)\ **Replies:** 3\ **Last updated:** [January 21, 2025, 7:03am UTC](https://forum.qoitech.com/t/significant-voltage-fluctuations-on-device-output/523 "2025-01-21T07:03:03Z")
Hello, I have been trying to use otii arc to emulate battery and evaluate and model charging characteristic. I am however having problem with getting any sort of trustworthy data from the device. DUT is prototype of we… --- ## [Could Someone Give me Advice on the Impact of Battery Profiling on Energy Efficiency?](https://forum.qoitech.com/t/could-someone-give-me-advice-on-the-impact-of-battery-profiling-on-energy-efficiency/522)
**Author:** [@zabronix](https://forum.qoitech.com/u/zabronix)\ **Replies:** 1\ **Last updated:** [January 8, 2025, 8:01am UTC](https://forum.qoitech.com/t/could-someone-give-me-advice-on-the-impact-of-battery-profiling-on-energy-efficiency/522 "2025-01-08T08:01:59Z")
Hello there, I have recently started working with Qoitechs Otii device; and I am impressed with its capabilities in battery profiling and energy consumption measurement. Although; I have a couple of questions regarding … --- ## [Battery Profiling Tutorials](https://forum.qoitech.com/t/battery-profiling-tutorials/88)
**Author:** [@jamie.novak](https://forum.qoitech.com/u/jamie.novak)\ **Replies:** 4\ **Last updated:** [January 2, 2025, 7:23am UTC](https://forum.qoitech.com/t/battery-profiling-tutorials/88 "2025-01-02T07:23:48Z")
Are there any instructions, case studies or tutorials on battery profiling? I am interested in this feature but am unable to determine how to start a project to execute. Thanks Jamie --- ## [Otii Ace pro power supply for Jetson AGX Orin](https://forum.qoitech.com/t/otii-ace-pro-power-supply-for-jetson-agx-orin/514)
**Author:** [@romyull](https://forum.qoitech.com/u/romyull)\ **Replies:** 8\ **Last updated:** [December 27, 2024, 1:15pm UTC](https://forum.qoitech.com/t/otii-ace-pro-power-supply-for-jetson-agx-orin/514 "2024-12-27T13:15:18Z")
Hi, Can you recommend any power supply that can perfectly work to supply enough power for the Jetson AGX Orin device? It can work on 12V-3A and 20V-4.5A. I am using just a USB cable to supply power to Raspberry Pi from… --- ## [Charging an emulated LiPo battery](https://forum.qoitech.com/t/charging-an-emulated-lipo-battery/518)
**Author:** [@yan.rosh](https://forum.qoitech.com/u/yan.rosh)\ **Replies:** 3\ **Last updated:** [November 6, 2024, 8:32am UTC](https://forum.qoitech.com/t/charging-an-emulated-lipo-battery/518 "2024-11-06T08:32:37Z")
Hello, We are using the battery toolbox to emulate a battery with the Otii Ace Pro. Our emulated battery is connected to a load and a battery charger. When we try and charge our “battery” there is no current going int… --- ## [Bricked device - need help](https://forum.qoitech.com/t/bricked-device-need-help/515)
**Author:** [@dduchna](https://forum.qoitech.com/u/dduchna)\ **Replies:** 1\ **Last updated:** [October 25, 2024, 6:18am UTC](https://forum.qoitech.com/t/bricked-device-need-help/515 "2024-10-25T06:18:07Z")
Dear support, please help mi with an issue. I got Otii Arc which is discovered under windows in device manager as: “Arc Firmware Upgrade Port”. But Otti 3.5.2 do not recognize it. I have found some topics on this forum … --- ## [Copy the statistical data from multiple graphs](https://forum.qoitech.com/t/copy-the-statistical-data-from-multiple-graphs/513)
**Author:** [@tbe](https://forum.qoitech.com/u/tbe)\ **Replies:** 1\ **Last updated:** [October 4, 2024, 1:16pm UTC](https://forum.qoitech.com/t/copy-the-statistical-data-from-multiple-graphs/513 "2024-10-04T13:16:45Z")
Hi, I would like to request the possibility to copy the small statistical window data: “Min, Avg, Max“, to the clipboard. Maybe with the possibility of including the trace names to copied data. So, the following would … --- ## [Project\_stop\_recording on Falling Edge/UART Output](https://forum.qoitech.com/t/project-stop-recording-on-falling-edge-uart-output/508)
**Author:** [@moultriemobile](https://forum.qoitech.com/u/moultriemobile)\ **Replies:** 1\ **Last updated:** [September 9, 2024, 5:55am UTC](https://forum.qoitech.com/t/project-stop-recording-on-falling-edge-uart-output/508 "2024-09-09T05:55:25Z")
Is it possible to trigger project\_stop\_recording based on a falling edge of the current/power measurement? (ex. stop recording when power falls below 10 mA) Is it possible to trigger it based on UART outputs? (ex. stop … --- ## [Data export from command line or python API](https://forum.qoitech.com/t/data-export-from-command-line-or-python-api/504)
**Author:** [@pontus.fuchs](https://forum.qoitech.com/u/pontus.fuchs)\ **Replies:** 2\ **Last updated:** [September 3, 2024, 7:35am UTC](https://forum.qoitech.com/t/data-export-from-command-line-or-python-api/504 "2024-09-03T07:35:24Z")
Hi, I’m using the otii3 + automation license to measure power in an automated test setup. Is it possible to extract data in CSV or other format from command line or python API? Pontus --- ## [Could Someone Give me Advise on Optimizing Power Consumption for IoT Device with Otii Arc?](https://forum.qoitech.com/t/could-someone-give-me-advise-on-optimizing-power-consumption-for-iot-device-with-otii-arc/499)
**Author:** [@samzyan4](https://forum.qoitech.com/u/samzyan4)\ **Replies:** 0\ **Last updated:** [June 26, 2024, 11:53am UTC](https://forum.qoitech.com/t/could-someone-give-me-advise-on-optimizing-power-consumption-for-iot-device-with-otii-arc/499 "2024-06-26T11:53:18Z")
Hello there, I am working on an IoT project that involves a battery-powered sensor device, and I am using the Otii Arc to measure and optimize its power consumption. I have managed to gather some initial data; but I am … --- ## [Nothing is printing on UART Console](https://forum.qoitech.com/t/nothing-is-printing-on-uart-console/489)
**Author:** [@john7560](https://forum.qoitech.com/u/john7560)\ **Replies:** 1\ **Last updated:** [June 20, 2024, 7:49am UTC](https://forum.qoitech.com/t/nothing-is-printing-on-uart-console/489 "2024-06-20T07:49:30Z")
When linking the TX pin from the Nucleo-L053R8 board to the RX pin on the OTii, and grounding (GND) to the digital ground (DGND) of the OTii, and activating UART with a baud rate set to 9600, followed by initiating the U… --- ## [Export Battery Profile](https://forum.qoitech.com/t/export-battery-profile/495)
**Author:** [@jmills](https://forum.qoitech.com/u/jmills)\ **Replies:** 1\ **Last updated:** [May 3, 2024, 6:04am UTC](https://forum.qoitech.com/t/export-battery-profile/495 "2024-05-03T06:04:34Z")
Hello, I have used the Otii ace to discharge a battery and generate a battery curve. I would like to export this curve and view it as a CSV. How can I do that? Thanks Jesse --- ## [Otii 3.4.3 software - uart filter](https://forum.qoitech.com/t/otii-3-4-3-software-uart-filter/492)
**Author:** [@thanas\_hiber](https://forum.qoitech.com/u/thanas_hiber)\ **Replies:** 1\ **Last updated:** [April 16, 2024, 6:42am UTC](https://forum.qoitech.com/t/otii-3-4-3-software-uart-filter/492 "2024-04-16T06:42:08Z")
Dear support, In version 3.4.3 of the Otii software it is not possible to filter test in the UART log like it was in 2.4.0 Do I need to enable something ? Edit : I see it is available in 3.5.0 so it is solved --- ## [Otii 3.x onwards - Title of windows](https://forum.qoitech.com/t/otii-3-x-onwards-title-of-windows/493)
**Author:** [@thanas\_hiber](https://forum.qoitech.com/u/thanas_hiber)\ **Replies:** 1\ **Last updated:** [April 16, 2024, 6:40am UTC](https://forum.qoitech.com/t/otii-3-x-onwards-title-of-windows/493 "2024-04-16T06:40:06Z")
Dear support, When opening a recording from disk, the title of window does not reflect the filename as in 2.4.0. The title remains to “Untitled”. Is this bug? Is there a way to get this automatically either than editin… --- ## [Otii 3.4 - is there a max recording size?](https://forum.qoitech.com/t/otii-3-4-is-there-a-max-recording-size/494)
**Author:** [@wleatlanta](https://forum.qoitech.com/u/wleatlanta)\ **Replies:** 1\ **Last updated:** [April 16, 2024, 6:37am UTC](https://forum.qoitech.com/t/otii-3-4-is-there-a-max-recording-size/494 "2024-04-16T06:37:25Z")
i ask, because i tried to do a recording over the weekend, would have been about 30 hours long, when i came today to finish it, it just showed the last 3 hour or so… what happened to the rest of it? what am i missing \[… [Next page](https://forum.qoitech.com/c/community-support/12.md?page=1)