# OpenMV AE3 don't work **URL:** \ **Category:** OpenMV Boards\ **Created:** [September 16, 2026, 3:25pm UTC](https://forums.openmv.io/t/openmv-ae3-dont-work/11875 "2026-09-16T15:25:06Z")\ **Posts on this page:** 11\ **Page:** 1
**Author:** ![Ulf\_Andersson](https://avatars.discourse-cdn.com/v4/letter/u/c0e974/32.png) [@Ulf\_Andersson](https://forums.openmv.io/u/Ulf_Andersson)\ **Post date:** [September 16, 2026, 3:25pm UTC](https://forums.openmv.io/t/openmv-ae3-dont-work/11875/1 "2026-09-16T15:25:06Z")
Hi I bought an AE3 and received it today; I let everything update. Everything worked fine for five minutes. Then everything died; not even the built-in USB drive showed up in the file manager. The LED flashes for a while, but nothing happens. Suddenly, everything started working again, but it only lasted three minutes this time. I tried it on another computer without success. My old RT1062 works. What to do? ---
**Author:** ![Ulf\_Andersson](https://avatars.discourse-cdn.com/v4/letter/u/c0e974/32.png) [@Ulf\_Andersson](https://forums.openmv.io/u/Ulf_Andersson)\ **Post date:** [September 16, 2026, 3:39pm UTC](https://forums.openmv.io/t/openmv-ae3-dont-work/11875/2 "2026-09-16T15:39:55Z")
The USB port is there ![image](https://canada1.discourse-cdn.com/flex029/uploads/openmv1/original/2X/6/671eb9e946223784ff16ea3224a0297548176e2b.png) ---
**Author:** ![kwagyeman](https://yyz1.discourse-cdn.com/flex029/user_avatar/forums.openmv.io/kwagyeman/32/4_2.png) [@kwagyeman](https://forums.openmv.io/u/kwagyeman)\ **Post date:** [September 16, 2026, 4:56pm UTC](https://forums.openmv.io/t/openmv-ae3-dont-work/11875/3 "2026-09-16T16:56:28Z")
Hmmm, this is something I probably should live debug with you. Seems like driver problems or weird Windows behavior. Sent you PM with my calendar link. ---
**Author:** ![kwagyeman](https://yyz1.discourse-cdn.com/flex029/user_avatar/forums.openmv.io/kwagyeman/32/4_2.png) [@kwagyeman](https://forums.openmv.io/u/kwagyeman)\ **Post date:** [September 17, 2026, 6:20pm UTC](https://forums.openmv.io/t/openmv-ae3-dont-work/11875/4 "2026-09-17T18:20:01Z")
Live debug found the main.py script needed to be erased via Tools → Erase onboard Flash Drive. Once that was done the camera was okay again. ---
**Author:** ![Ulf\_Andersson](https://avatars.discourse-cdn.com/v4/letter/u/c0e974/32.png) [@Ulf\_Andersson](https://forums.openmv.io/u/Ulf_Andersson)\ **Post date:** [September 25, 2026, 3:30pm UTC](https://forums.openmv.io/t/openmv-ae3-dont-work/11875/5 "2026-09-25T15:30:00Z")
Yes it works for some time, I have erased the flash drive about 10 times now the usb port and the drive don’t show up I disconnect and connect and if it show up I erase the drive and replace the files it works a while then it hapens again! ---
**Author:** ![kwagyeman](https://yyz1.discourse-cdn.com/flex029/user_avatar/forums.openmv.io/kwagyeman/32/4_2.png) [@kwagyeman](https://forums.openmv.io/u/kwagyeman)\ **Post date:** [September 25, 2026, 5:18pm UTC](https://forums.openmv.io/t/openmv-ae3-dont-work/11875/6 "2026-09-25T17:18:05Z")
Hi Ulf, We have a lot of other customers using the system without error, but, you seem to be running into an issue here. What kind of scripts are you running onboard the system? ---
**Author:** ![Ulf\_Andersson](https://avatars.discourse-cdn.com/v4/letter/u/c0e974/32.png) [@Ulf\_Andersson](https://forums.openmv.io/u/Ulf_Andersson)\ **Post date:** [September 25, 2026, 6:03pm UTC](https://forums.openmv.io/t/openmv-ae3-dont-work/11875/7 "2026-09-25T18:03:59Z")
Reading your answer I went over to the PC connected the AE3 The drive D: started and the contet showed Main.py showed and I started it The entire script: ```python import csi import time import ml from machine import UART uart = UART(1, 9600) csi0 = csi.CSI() csi0.reset() csi0.pixformat(csi.RGB565) csi0.framesize(csi.QVGA) csi0.framerate(240) csi0.snapshot(time=2000) model = ml.Model("trained.tflite") print(model) labels = ["NOT", "ROUND", "STOP", "TURN"] clock = time.clock() area = 0 while True: clock.tick() img = csi0.snapshot() scores = model.predict([img])[0].flatten().tolist() max_score = max(scores) max_index = scores.index(max_score) max_score = round(max_score, 2) payload = f"{labels[max_index]}, {max_score}" print(payload) # uart.write(payload.encode('utf-8')) ``` The terminal: ```python NOT, 0.71 NOT, 0.7 NOT, 0.68 NOT, 0.7 NOT, 0.7 NOT, 0.67 NOT, 0.7 NOT, 0.71 NOT, 0.67 NOT, 0.7 Traceback (most recent call last): File "main.py", line 28, in File "ml/model.py", line 44, in predict File "ml/model.py", line 44, in File "ml/preprocessing.py", line 50, in __call__ OpenMV 631681e5ac; MicroPython v1.28.0-64; OpenMV-AE3 with AE302F80F55D5AE Type "help()" for more information. >>> ``` As you can se it start and it print then it halt and you can se the output there is no line 44 or 50 Drive D: disapear and the IDE is as follow ![image](https://canada1.discourse-cdn.com/flex029/uploads/openmv1/original/2X/c/c7dc6648d8f740a699f0076e38cca459f922502a.png) ---
**Author:** ![kwagyeman](https://yyz1.discourse-cdn.com/flex029/user_avatar/forums.openmv.io/kwagyeman/32/4_2.png) [@kwagyeman](https://forums.openmv.io/u/kwagyeman)\ **Post date:** [September 25, 2026, 6:18pm UTC](https://forums.openmv.io/t/openmv-ae3-dont-work/11875/8 "2026-09-25T18:18:04Z")
Okay, I might have an idea why… question, via PM, you should have moved your model to ROMFS? Why are you still running it from the D drive? Also, are you editing the `main.py` file from the IDE while it’s on the D drive? ---
**Author:** ![Ulf\_Andersson](https://avatars.discourse-cdn.com/v4/letter/u/c0e974/32.png) [@Ulf\_Andersson](https://forums.openmv.io/u/Ulf_Andersson)\ **Post date:** [September 25, 2026, 7:35pm UTC](https://forums.openmv.io/t/openmv-ae3-dont-work/11875/9 "2026-09-25T19:35:43Z")
I have been working TOF and it works ok now I wanted to combine the scripts to one. I am stil working on d: since if I work outside d: the intelicence don’t work. Tryed it, it’s working now!!! maby it’s a way avoid problem. The D: drive ought to be stable enough to work on. ---
**Author:** ![kwagyeman](https://yyz1.discourse-cdn.com/flex029/user_avatar/forums.openmv.io/kwagyeman/32/4_2.png) [@kwagyeman](https://forums.openmv.io/u/kwagyeman)\ **Post date:** [September 25, 2026, 11:19pm UTC](https://forums.openmv.io/t/openmv-ae3-dont-work/11875/10 "2026-09-25T23:19:16Z")
Yeah, I think the issue is that you are editing the script on the camera drive directly. The IDE will save a backup file each time you make any edit on the drive. This generally causes a lot of problems, as the disk is only 4MB and the IDE fills up the disk with temp files. You should be able to edit the main.py on your desktop and then do Tools-\>Save Script to OpenMV Cam to copy it to the camera drive. As for the auto-complete… that should definitely work, without having to edit main.py on the camera directly. However, I will see if I can reproduce your issue. ---
**Author:** ![Ulf\_Andersson](https://avatars.discourse-cdn.com/v4/letter/u/c0e974/32.png) [@Ulf\_Andersson](https://forums.openmv.io/u/Ulf_Andersson)\ **Post date:** [September 26, 2026, 12:06am UTC](https://forums.openmv.io/t/openmv-ae3-dont-work/11875/11 "2026-09-26T00:06:50Z")
Thanks I will try the Tools-\>Save script, instead of dragging the file to D: