Search found 28 matches

by kidswong999
Thu Sep 27, 2018 7:23 am
Forum: Technical Discussion
Topic: output AV anolog video such as NTSC
Replies: 2
Views: 107

Re: output AV anolog video such as NTSC

It looks very good, I have already purchased a few chips, this chip is a bit hard to buy. :D
by kidswong999
Wed Sep 26, 2018 7:12 am
Forum: Technical Discussion
Topic: output AV anolog video such as NTSC
Replies: 2
Views: 107

output AV anolog video such as NTSC

Hi, is there any way to output AV anolog video such as NTSC.

We can display video on TV, or wireless screen.
by kidswong999
Tue Sep 11, 2018 1:59 am
Forum: Technical Discussion
Topic: Functional advice: add UVC in P0 and P1
Replies: 3
Views: 142

Re: Functional advice: add UVC in P0 and P1

Sounds good.

What I originally meant was to design an expansion board that pulls out the USB ports of the P0 and P1 pins.

But if H7 can directly use the current USB port to achieve UVC, it is also very good.
:D
by kidswong999
Mon Sep 10, 2018 7:46 am
Forum: Technical Discussion
Topic: Functional advice: add UVC in P0 and P1
Replies: 3
Views: 142

Functional advice: add UVC in P0 and P1

The STM32F7/H7 has two USB ports, one is FS with PHY, which is now used for programming; the other is HS, although there is no HS PHY, but there is also a built-in FS PHY. P0 and P1 pins are HS USB pins, so, we can use the P0 and P1 pins to implement another USB device, such as a UVC camera. We can ...
by kidswong999
Fri Aug 03, 2018 3:32 am
Forum: Technical Discussion
Topic: resize the framebuffer with copy function
Replies: 2
Views: 126

resize the framebuffer with copy function

Hi,

Can I use img.copy(roi = [0,0,10,10], copy_to_fb=True) to resize the framebuffer?

the error is:

OSError: Cannot copy to fb!

I am using the OpenMV3 F7 with firmware 3.0.0

Thanks. :D
by kidswong999
Mon Jul 30, 2018 12:02 am
Forum: Technical Discussion
Topic: lshift and rshift in nn_quantizer
Replies: 4
Views: 179

Re: lshift and rshift in nn_quantizer

Thanks. :D
by kidswong999
Sun Jul 29, 2018 10:45 pm
Forum: Technical Discussion
Topic: lshift and rshift in nn_quantizer
Replies: 4
Views: 179

Re: lshift and rshift in nn_quantizer

I will study this code again, in fact, it is really difficult to understand.

I also read the paper:
Efficient Neural Network Kernels for Arm Cortex-M CPUs
Https://arxiv.org/abs/1801.06601

But it seems that I don't not find the answer.
by kidswong999
Sun Jul 29, 2018 10:09 pm
Forum: Technical Discussion
Topic: lshift and rshift in nn_quantizer
Replies: 4
Views: 179

lshift and rshift in nn_quantizer

Hi, When quantifying my own model, I was confused about what l_shift and r_shift. I have converted the float32 number to an 8-bit q format fix-number. and get int_bits and dec_bits of weights and bias. maybe 2 numbers is enough: weights_dec_bits and bias_dec_bits. (weights_int_bits = 7-weights_dec_b...
by kidswong999
Sat Jul 07, 2018 9:35 am
Forum: Technical Discussion
Topic: models supported by CMSIS-NN?
Replies: 1
Views: 140

models supported by CMSIS-NN?

Hi, in this blog:https://openmv.io/blogs/news/deep-learning-on-a-cortex-m7-camera-3ma-deep-learning Note that you should keep in mind the CMSIS-NN library and conversion scripts have limitations on the number and types of supported layers - so your model should be simple. I know that lenet is small,...
by kidswong999
Sat Jun 02, 2018 11:59 pm
Forum: Technical Discussion
Topic: guide to make cnn classify module
Replies: 1
Views: 188

guide to make cnn classify module

Is there a detailed tutorial on CNN? I want to classify my two cats.

Train module in tensorflow, and export to OpenMV.

I have a lot of their photos.

Thanks ;)
by kidswong999
Thu May 31, 2018 2:30 am
Forum: General Topics
Topic: face_recognition.py example not working
Replies: 8
Views: 1043

Re: face_recognition.py example not working

I met the same issue...

firmwave version 2.9.0, windows 10
I have already saved the file according to the steps.
It says: AttributeError: 'Image' object has no attribute 'mask_ellipse'

But on firmware version 2.7.0 , this example is ok.
by kidswong999
Sun May 27, 2018 6:47 am
Forum: Technical Discussion
Topic: mjpeg_streaming_ap not support ios devices
Replies: 2
Views: 202

mjpeg_streaming_ap not support ios devices

Hi, I am using mjpeg_streaming_ap example, desktop compoter (windows): chrome is OK. iOS(iPhone 7): chrome just got a download file, and can not download. Safari could only got one picture, not streaming. Android(XiaoMi): chrome and buildin expoler are both OK. Maybe there are problems in iOS about ...
by kidswong999
Tue May 15, 2018 9:01 am
Forum: Technical Discussion
Topic: only one device connected to the AP(wifi shield)
Replies: 3
Views: 341

only one device connected to the AP(wifi shield)

When I was running the MJPEG Streaming AP program, I found that there was only one device connected to the AP. If I wanted the phone and the PC to connect to the AP at the same time, I would be unable to connect to the network.

How to solve it? :D
by kidswong999
Wed Apr 11, 2018 4:50 am
Forum: Technical Discussion
Topic: draw_rectangle color mistake
Replies: 3
Views: 463

draw_rectangle color mistake

Hello, in the IDE, the border of the draw_rectangle function is not quite right. Firmware Version: 2.7.0 IDE Version: 1.8.1 import sensor, image, time sensor.reset() sensor.set_pixformat(sensor.RGB565) sensor.set_framesize(sensor.QVGA) sensor.skip_frames(time=2000) while(True): img=sensor.snapshot()...
by kidswong999
Mon Mar 19, 2018 10:27 pm
Forum: General Topics
Topic: lens_to_camera_mm in telephoto-lens
Replies: 1
Views: 336

lens_to_camera_mm in telephoto-lens

Hi, I am using mavlink_apriltags_landing_target example with telephoto-lens, but I don't know the lens_to_camera_mm parameter.
Could you provide some information about that?

https://openmv.io/collections/lenses/pr ... photo-lens
by kidswong999
Sat Dec 16, 2017 11:17 pm
Forum: General Topics
Topic: OpenMV M7 Fritzing part
Replies: 3
Views: 1309

Re: OpenMV M7 Fritzing part

by kidswong999
Sat Dec 16, 2017 11:16 pm
Forum: General Topics
Topic: a beautiful openmv fritzing part
Replies: 3
Views: 1022

a beautiful openmv fritzing part

Hi, I make a beautiful openmv fritzing part:

https://github.com/SingTown/OpenMV-fritzing
openmv3.png
openmv3.png (192.38 KiB) Viewed 1022 times
by kidswong999
Wed Aug 09, 2017 7:31 am
Forum: Technical Discussion
Topic: fps is slow when OpenMV boot from file system
Replies: 17
Views: 5255

Re: fps is slow when OpenMV boot from file system

iabdalkader wrote:
Tue Aug 08, 2017 12:58 pm
@kidswong999

Please test the attached FW let me know if it fixes the issue.
Hi, in fact, I don't know how to download bin file. :D
Could you send a dfu file?

Thanks.
by kidswong999
Tue Aug 08, 2017 2:43 am
Forum: Technical Discussion
Topic: fps is slow when OpenMV boot from file system
Replies: 17
Views: 5255

Re: fps is slow when OpenMV boot from file system

kwagyeman wrote:
Tue Aug 08, 2017 12:23 am
92 FPS... make sure to disable the frame buffer otherwise you get 30 FPS...
But when boot main.py from file system, how to disable framebuffer?
by kidswong999
Mon Aug 07, 2017 10:31 pm
Forum: Technical Discussion
Topic: fps is slow when OpenMV boot from file system
Replies: 17
Views: 5255

Re: fps is slow when OpenMV boot from file system

kwagyeman wrote:
Mon Aug 07, 2017 10:14 pm
Can you copy the print out text here?
by kidswong999
Mon Aug 07, 2017 9:48 pm
Forum: Technical Discussion
Topic: fps is slow when OpenMV boot from file system
Replies: 17
Views: 5255

Re: fps is slow when OpenMV boot from file system

Yeah, I know what's wrong... Your getting serial characters overwriting each other... Please add "timeout_char = 1000" to the UART constructor as another argument. Still no work, I added "timeout_char = 1000", still 29fps. import sensor, image, time from pyb import UART uart = UART(3, 115200, timeo...
by kidswong999
Mon Aug 07, 2017 8:13 pm
Forum: Technical Discussion
Topic: fps is slow when OpenMV boot from file system
Replies: 17
Views: 5255

Re: fps is slow when OpenMV boot from file system

Yes,the board is an M7. :shock:
by kidswong999
Mon Aug 07, 2017 5:51 am
Forum: Technical Discussion
Topic: fps is slow when OpenMV boot from file system
Replies: 17
Views: 5255

fps is slow when OpenMV boot from file system

Hi, I run the code. IDE: 1.6.0; firmware: 2.4.1; # Hello World Example # # Welcome to the OpenMV IDE! Click on the green run arrow button below to run the script! import sensor, image, time from pyb import UART uart = UART(3, 115200) sensor.reset() # Reset and initialize the sensor. sensor.set_pixfo...
by kidswong999
Sat Jun 03, 2017 12:11 am
Forum: Technical Discussion
Topic: WINC1500 shield download firmware
Replies: 1
Views: 913

WINC1500 shield download firmware

Hello. I made a winc1500 shield myself. But I can't download the firmware. I use a ttl-USB and run .\download_all.bat UART I followed the link http://community.atmel.com/forum/atwinc1500-firmware-upgrade BUT the Error is: Invalid chip ID. Could you help me? Thanks. :) ERROR MESSAGE Downloading Image...
by kidswong999
Tue May 09, 2017 12:35 am
Forum: Technical Discussion
Topic: Using machine.I2C
Replies: 6
Views: 1904

Re: Using machine.I2C

Hello, what is the difference between machine.I2C and pyb.I2C?
why there are two class, but one thing? :?:
by kidswong999
Sun Apr 02, 2017 1:28 pm
Forum: Technical Discussion
Topic: esp32 as wifi&ble shield
Replies: 3
Views: 1299

esp32 as wifi&ble shield

Hello,

How about replacing winc1500 by esp32?

I saw that 135 Mbps UDP sustained throughput. Max data rate of 150 Mbps@11n HT40, 72 Mbps@11n HT20, 54 Mbps@11g, and 11 Mbps@11b

http://espressif.com/en/products/hardwa ... 2/overview

esp32 is cheaper and more powerful.

Thanks

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