Search found 1299 matches
- Mon Jan 25, 2021 7:06 pm
- Forum: General Topics
- Topic: H7 plus Saving images to SDRAM for post processing
- Replies: 12
- Views: 166
Re: H7 plus Saving images to SDRAM for post processing
Actually that's right you should use the enum.
- Mon Jan 25, 2021 6:26 pm
- Forum: Technical Discussion
- Topic: Saved bmp files have incorrect dimensions
- Replies: 3
- Views: 14
Re: Saved bmp files have incorrect dimensions
Which OpenMV is that ? Also please include all the firmware info you see in the IDE when connected to the camera.
- Mon Jan 25, 2021 6:23 pm
- Forum: Arduino Portenta H7
- Topic: Microspeech
- Replies: 2
- Views: 11
Re: Microspeech
Yes but it's only available on the Arduino Portenta.
There's an example in the IDE and you can find the model here:
https://github.com/iabdalkader/microspeech-yesno-model
Copy it to SD card or flash storage.
There's an example in the IDE and you can find the model here:
https://github.com/iabdalkader/microspeech-yesno-model
Copy it to SD card or flash storage.
- Mon Jan 25, 2021 3:52 pm
- Forum: Technical Discussion
- Topic: Low Power with External Trigger
- Replies: 16
- Views: 104
Re: Low Power with External Trigger
BTW I also tested the firmware used in the linked post, it's fw 3.0.0, and I get the same 10mA with the OPENMV3/F7 in stop mode.
- Mon Jan 25, 2021 3:14 pm
- Forum: Technical Discussion
- Topic: Low Power with External Trigger
- Replies: 16
- Views: 104
Re: Low Power with External Trigger
I just a made a small fix to shutdown and the final numbers that I see are 10mA in sleep()/lightsleep() (STOP mode), and less than 10mA in deepsleep() (STANDBY mode) I'm not sure what the exact numbers are if you have a meter hooked up let us know. 2. What do I need to modify in my code to reach 10m...
- Mon Jan 25, 2021 2:33 pm
- Forum: Technical Discussion
- Topic: Low Power with External Trigger
- Replies: 16
- Views: 104
- Sun Jan 24, 2021 4:05 pm
- Forum: General Topics
- Topic: H7 plus Saving images to SDRAM for post processing
- Replies: 12
- Views: 166
- Sat Jan 23, 2021 12:25 pm
- Forum: Technical Discussion
- Topic: How to install a shield?
- Replies: 3
- Views: 38
Re: How to install a shield?
Shields are stacked with the long headers, see the product page https://openmv.io/collections/shields/p ... i-shield-1
- Sat Jan 23, 2021 9:14 am
- Forum: Technical Discussion
- Topic: Unexpected result trying to set CPU frequency
- Replies: 2
- Views: 23
Re: Unexpected result trying to set CPU frequency
@Kwabena we shouldn't mention specific frequencies in the docs as it depends on the chip and board.
- Fri Jan 22, 2021 10:17 am
- Forum: Technical Discussion
- Topic: Use pin P6 with the Wifi Shield
- Replies: 2
- Views: 23
Re: Use pin P6 with the Wifi Shield
No, it must be used for the wifi module..
- Thu Jan 21, 2021 12:06 pm
- Forum: Technical Discussion
- Topic: Low Power with External Trigger
- Replies: 16
- Views: 104
Re: Low Power with External Trigger
That's not my post and it's for the older camera not the H7+, actually the H7+ should be able to get to lower power or the same at least, since we fixed a missing pull up on the sensor power down.
- Wed Jan 20, 2021 6:42 pm
- Forum: Technical Discussion
- Topic: Low Power with External Trigger
- Replies: 16
- Views: 104
Re: Low Power with External Trigger
Actually I realized QSPI wasn't disabled in low-power modes, after some fixes the board draws less than 10mA in deepsleep.. As for lightsleep, it still draws at least 30mA... However, I noticed if sensor.reset() is not called at all it gets down to 10mA.. so there must be some register that gets wri...
- Wed Jan 20, 2021 5:12 pm
- Forum: Technical Discussion
- Topic: Low Power with External Trigger
- Replies: 16
- Views: 104
Re: Low Power with External Trigger
The lowest possible current is only achievable with the deepsleep example.
- Wed Jan 20, 2021 11:10 am
- Forum: Technical Discussion
- Topic: Low Power with External Trigger
- Replies: 16
- Views: 104
Re: Low Power with External Trigger
I get ~10mA with the deepsleep example (machine.deepsleep()) with the latest firmware.
- Thu Jan 14, 2021 11:11 am
- Forum: Technical Discussion
- Topic: Is it possible to format internal disk or remove boot.py in DFU mode?
- Replies: 2
- Views: 33
Re: Is it possible to format internal disk or remove boot.py in DFU mode?
There's no single answer that fits all, it depends on the flash FS that's used, on OpenMV boards without external SPI flash yes but only if you put the board in DFU manually, and then overwrite the filesystem page, on Portenta yes (the Arduino bootloader is DFU), on OpenMV boards with external SPI f...
- Sun Jan 10, 2021 10:18 pm
- Forum: Arduino Portenta H7
- Topic: Using the Portenta's IMU with Micropython code
- Replies: 7
- Views: 141
Re: Using the Portenta's IMU with Micropython code
I was thinking of getting the adafruit lsm9ds1 https://learn.adafruit.com/adafruit-lsm9ds1-accelerometer-plus-gyro-plus-magnetometer-9-dof-breakout as it should work with the same code as the accelerometer examples for the Nano33BleSense. Anyone know if this accelerometer works with the PortentaH7?...
- Fri Jan 08, 2021 10:05 am
- Forum: Arduino Portenta H7
- Topic: Using the Portenta's IMU with Micropython code
- Replies: 7
- Views: 141
Re: Using the Portenta's IMU with Micropython code
The Portenta H7 doesn't have any IMUs as far as I know.
- Fri Jan 08, 2021 10:02 am
- Forum: General Topics
- Topic: Unable to flash h7 plus firmware
- Replies: 2
- Views: 73
Re: Unable to flash h7 plus firmware
Try removing the SD and erasing the internal flash fs (there's a checkbox when uploading the firmware) also you must never use a different board firmware for yours.
- Mon Jan 04, 2021 7:13 pm
- Forum: Technical Discussion
- Topic: Can 2 cameras work with one board
- Replies: 1
- Views: 62
Re: Can 2 cameras work with one board
No that's not possible.
- Mon Jan 04, 2021 4:40 pm
- Forum: General Topics
- Topic: H7 plus Saving images to SDRAM for post processing
- Replies: 12
- Views: 166
Re: H7 plus Saving images to SDRAM for post processing
I'll try to get a release out this month, but you should try to build and test this new feature so you can let us know if there's any issues.
- Sat Jan 02, 2021 4:15 pm
- Forum: General Topics
- Topic: H7 plus Saving images to SDRAM for post processing
- Replies: 12
- Views: 166
Re: H7 plus Saving images to SDRAM for post processing
Hi I implemented something that does exactly what you want, we didn't have this before because memory was low. After this is merged you should be able to record frames to memory and play them back and use the frames with any image processing function:
https://github.com/openmv/openmv/pull/1084
https://github.com/openmv/openmv/pull/1084
- Thu Dec 24, 2020 5:18 pm
- Forum: Technical Discussion
- Topic: Error on winc.c module when compiling sources
- Replies: 9
- Views: 268
Re: Error on winc.c module when compiling sources
Hi, we use gcc version 7.3.1 20180622 (7-2018-q2-update) you can get it from here:
https://armkeil.blob.core.windows.net/d ... ux.tar.bz2
https://armkeil.blob.core.windows.net/d ... ux.tar.bz2
- Wed Dec 23, 2020 9:13 am
- Forum: Technical Discussion
- Topic: How to I program a specific firmware version?
- Replies: 2
- Views: 61
Re: How to I program a specific firmware version?
You just need to download the firmware zip from github releases and upload OPENMV*/firmware.bin for you camera, in this case it's OPENMV4. I don't think this feature will be added because we will have to include all the previous firmware releases and that will make the IDE much bigger, but feel free...
- Thu Dec 17, 2020 5:16 pm
- Forum: Technical Discussion
- Topic: Defective Camera Image
- Replies: 14
- Views: 228
Re: Defective Camera Image
The bootloader times out how ? Can you post screenshots or a screen recording ? Also it might be worth trying on Linux, could be a Windows issue.
- Thu Dec 17, 2020 10:34 am
- Forum: Technical Discussion
- Topic: Defective Camera Image
- Replies: 14
- Views: 228
Re: Defective Camera Image
I think you're uploading the wrong firmware.
- Thu Dec 17, 2020 7:33 am
- Forum: Technical Discussion
- Topic: Defective Camera Image
- Replies: 14
- Views: 228
Re: Defective Camera Image
Hi, please try the latest firmware (3.8.0) first and then let us know if the issue is not fixed.
- Wed Dec 16, 2020 6:35 pm
- Forum: Technical Discussion
- Topic: v3.8.0: Issue with Timer Input Capture
- Replies: 4
- Views: 121
Re: v3.8.0: Issue with Timer Input Capture
Thanks, I'll take a look. In the meantime, can you try setting the callback arg instead ?
Code: Select all
....
....
micropython.alloc_emergency_exception_buf(100);
tim_ch = tim.channel(2, pyb.Timer.IC, pin=ic_pin, polarity=pyb.Timer.BOTH, callback=tim_ic_isr);
....
- Wed Dec 16, 2020 5:42 pm
- Forum: Technical Discussion
- Topic: v3.8.0: Issue with Timer Input Capture
- Replies: 4
- Views: 121
Re: v3.8.0: Issue with Timer Input Capture
Please report an issue on github, and make sure to fill the issue template.
- Wed Dec 16, 2020 11:45 am
- Forum: Technical Discussion
- Topic: Custom firmware on OpenMV-H7
- Replies: 3
- Views: 133
Re: Custom firmware on OpenMV-H7
It's possible to flash any firmware with the IDE, but it will not work after that with the IDE and you will not be able to flash a new firmware (without resetting the board manually). We don't support any firmware other than ours and we can't help you with development questions you have to know what...
- Wed Dec 16, 2020 9:32 am
- Forum: Technical Discussion
- Topic: Custom firmware on OpenMV-H7
- Replies: 3
- Views: 133
Re: Custom firmware on OpenMV-H7
Yes it's possible, the firmware should start at 0x08040000 and the bootloader will jump to it, you won't be able to load a new firmware without disconnecting/reconnecting the board.
- Tue Dec 15, 2020 7:37 pm
- Forum: Technical Discussion
- Topic: How can RTC.wakeup() change global variables?
- Replies: 3
- Views: 119
Re: How can RTC.wakeup() change global variables?
Hi, there's no 3.9.6 firmware maybe you mean 3.6.9, in that case you should update to 3.8.0 the latest and then test again, if the issue is not fixed please report a bug on github with the smallest code that shows the issue.
- Sat Dec 12, 2020 7:45 am
- Forum: General Topics
- Topic: Where can i find the uvc.bin file
- Replies: 6
- Views: 130
- Fri Dec 11, 2020 3:08 pm
- Forum: Technical Discussion
- Topic: side face recognition
- Replies: 5
- Views: 120
Re: side face recognition
There's a model for front facing and H7+ onlypeople wearing masks or no masks from a side profile walking past an area that is properly lit with a plain wall background?
https://github.com/SingTown/mask-tflite
- Fri Dec 11, 2020 2:26 pm
- Forum: General Topics
- Topic: Frame buffer
- Replies: 10
- Views: 164
Re: Frame buffer
The microcontroller has an RTC, however there's no backup battery, so you'll need to keep power on all the time. The RTC still functions in low-power modes. There's no plan to implement recording in memory for now, but if it ever gets implemented it will only be possible on the H7+ with SDRAM. EDIT ...
- Fri Dec 11, 2020 9:41 am
- Forum: General Topics
- Topic: Where can i find the uvc.bin file
- Replies: 6
- Views: 130
- Thu Dec 10, 2020 3:20 pm
- Forum: General Topics
- Topic: My own weed detection
- Replies: 3
- Views: 151
Re: My own weed detection
Actually I meant use EdgeImpulse to train a neural network, it can't train haar cascades, you can only do that with open-cv. If you already trained a cascade that works, just try to lower the threshold and/or increase the scaling step.
- Wed Dec 09, 2020 1:40 pm
- Forum: Technical Discussion
- Topic: OSError: Arena size is too small for activation buffers when using Edge Impulse with H7 (non plus)
- Replies: 11
- Views: 190
Re: OSError: Arena size is too small for activation buffers when using Edge Impulse with H7 (non plus)
No, using smaller images ex 48x48, you don't have to retake photos I think the EI downscales the images.
- Wed Dec 09, 2020 1:08 pm
- Forum: Technical Discussion
- Topic: OSError: Arena size is too small for activation buffers when using Edge Impulse with H7 (non plus)
- Replies: 11
- Views: 190
Re: OSError: Arena size is too small for activation buffers when using Edge Impulse with H7 (non plus)
> awsome thanks I'll adjust the sensor and retake the photos. You don't need to retain the network, just set the framesize to QQVGA (which is 160x120) so you should be able to scale down to 90x90, while saving some framebuffer RAM. Also retraining a smaller model or switching architecture should wor...
- Wed Dec 09, 2020 1:02 pm
- Forum: Arduino Portenta H7
- Topic: Command line build and flash MicroPython Portenta H7
- Replies: 12
- Views: 257
Re: Command line build and flash MicroPython Portenta H7
I see, the M4 core is not used right now in our firmware, but we may support it in the future... You can probably run vanilla/upstream micropython along with Arduino firmware, I'm not sure you should ask in the Arduino forums.
- Wed Dec 09, 2020 12:41 pm
- Forum: Technical Discussion
- Topic: OSError: Arena size is too small for activation buffers when using Edge Impulse with H7 (non plus)
- Replies: 11
- Views: 190
- Wed Dec 09, 2020 12:31 pm
- Forum: Arduino Portenta H7
- Topic: Command line build and flash MicroPython Portenta H7
- Replies: 12
- Views: 257
Re: Command line build and flash MicroPython Portenta H7
Wait what are you trying to do again
?

- Wed Dec 09, 2020 11:32 am
- Forum: Technical Discussion
- Topic: OSError: Arena size is too small for activation buffers when using Edge Impulse with H7 (non plus)
- Replies: 11
- Views: 190
Re: OSError: Arena size is too small for activation buffers when using Edge Impulse with H7 (non plus)
Try a smaller frame size, it will make more memory available to TF.
- Wed Dec 09, 2020 11:29 am
- Forum: General Topics
- Topic: My own weed detection
- Replies: 3
- Views: 151
Re: My own weed detection
It's a lot easier to do classification with TF and EdgeImpulse and you'll get much better results. Please see the tutorials around just google openmv+edgeimpulse. Otherwise you should try tuning the threshold and scale factor, see the comments in the face detection example.
- Wed Dec 09, 2020 11:24 am
- Forum: General Topics
- Topic: How to Disable the LED During Snapshot
- Replies: 5
- Views: 89
Re: How to Disable the LED During Snapshot
That indicates the flash cache is being flushed, there's no way to disable it right now it's hard-coded in micropython. If you use an SD it won't turn on any LEDs.
- Wed Dec 09, 2020 8:49 am
- Forum: Arduino Portenta H7
- Topic: Command line build and flash MicroPython Portenta H7
- Replies: 12
- Views: 257
Re: Command line build and flash MicroPython Portenta H7
What do you mean?Does the command encompass the two core?
- Wed Dec 09, 2020 8:11 am
- Forum: General Topics
- Topic: Smartphone microscope
- Replies: 1
- Views: 63
Re: Smartphone microscope
Cool project! I don't see why not you may need to 3D print something to keep the cam in place but it should work.
- Wed Dec 09, 2020 8:08 am
- Forum: General Topics
- Topic: Import error: No module
- Replies: 1
- Views: 60
Re: Import error: No module
Hi, not every module is available in micropython, please read the docs to see what you can import and how you can use it. This may be a good alternative, it's built-in you can just import it http://docs.micropython.org/en/latest/library/ubinascii.html Also this may or may not work, you need to downl...
- Tue Dec 08, 2020 9:06 am
- Forum: General Topics
- Topic: Where can i find the uvc.bin file
- Replies: 6
- Views: 130
Re: Where can i find the uvc.bin file
In github releases, download the firmware.zip.
- Tue Dec 08, 2020 9:05 am
- Forum: General Topics
- Topic: Strange memory behaviour
- Replies: 1
- Views: 65
Re: Strange memory behaviour
Yes, it gets collected when there's no free memory.
- Mon Dec 07, 2020 9:24 pm
- Forum: Arduino Portenta H7
- Topic: Command line build and flash MicroPython Portenta H7
- Replies: 12
- Views: 257
Re: Command line build and flash MicroPython Portenta H7
Code: Select all
./dfu-util -a 0 -d 2341:035b --dfuse-address=0x08040000:leave -D build/bin/firmware.bin