Search found 36 matches

by kidswong999
Tue Jul 16, 2019 11:28 pm
Forum: General Topics
Topic: Power supplied of Openmv4 H7 with TOF module
Replies: 9
Views: 1358

Re: Power supplied of Openmv4 H7 with TOF module

If you buy a genuine board, you will certainly get a genuine service, and vice versa.

If it is genuine, just contact the seller, the problem can be solved directly. It is impossible to run an error in the example.
by kidswong999
Tue Jul 16, 2019 8:21 am
Forum: General Topics
Topic: Power supplied of Openmv4 H7 with TOF module
Replies: 9
Views: 1358

Re: Power supplied of Openmv4 H7 with TOF module

If you have technical questions, just goto https://forum.singtown.com, I answer questions every day, I will test and answer it. If you think goods have quality issues, just replace it or refund. I am not the technical support here, I am only responsible for the China region. And I will not answer yo...
by kidswong999
Fri Jul 12, 2019 9:15 am
Forum: General Topics
Topic: Power supplied of Openmv4 H7 with TOF module
Replies: 9
Views: 1358

Re: Power supplied of Openmv4 H7 with TOF module

Hi, just post on https://forum.singtown.com/category/5/openmv-cam

Please paste all codes, and I will test.
You could also contact customer service on taobao.

By the way, the distance shield is so low-power, it is under 20ma.
by kidswong999
Thu Oct 25, 2018 6:06 am
Forum: Technical Discussion
Topic: In binarized images, there are ways to get the number of white points?
Replies: 1
Views: 1250

In binarized images, there are ways to get the number of white points?

Hi,
In binarized images, there are ways to get the number of white pixel? :D
by kidswong999
Tue Oct 23, 2018 5:30 am
Forum: Technical Discussion
Topic: fastest way to get yuv table in firmware developing
Replies: 6
Views: 1848

Re: fastest way to get yuv table in firmware developing

I used a 16bit color and it was slower. The color is wrong and the red color will be displayed in green.
IMG_3704.mov
(5.31 MiB) Downloaded 115 times
by kidswong999
Mon Oct 22, 2018 7:16 am
Forum: Technical Discussion
Topic: fastest way to get yuv table in firmware developing
Replies: 6
Views: 1848

Re: fastest way to get yuv table in firmware developing

I solved it. TV can already display the image, then I will adjust the color, and optimize the efficiency :D Thanks. uint16_t pixel = IM_GET_RGB565_PIXEL(arg_img, x, y); //uint8_t pixel = IM_GET_GS_PIXEL(arg_img, x, y); int8_t y8 = COLOR_RGB565_TO_Y(pixel); int8_t u8 = COLOR_RGB565_TO_U(pixel); int8_...
by kidswong999
Mon Oct 22, 2018 3:10 am
Forum: Technical Discussion
Topic: fastest way to get yuv table in firmware developing
Replies: 6
Views: 1848

Re: fastest way to get yuv table in firmware developing

my code: uint8_t pixel = IM_GET_GS_PIXEL(arg_img, x, y); uint8_t y = COLOR_RGB565_TO_Y(pixel); uint8_t u = COLOR_RGB565_TO_U(pixel); uint8_t v = COLOR_RGB565_TO_V(pixel); uint8_t v2 = (v>>0)&0b11000000; //this maybe wrong uint8_t u2 = (u>>2)&0b00110000; uint8_t y4 = (y>>4)&0b00001111; uint8_t color ...
by kidswong999
Mon Oct 22, 2018 1:37 am
Forum: Technical Discussion
Topic: fastest way to get yuv table in firmware developing
Replies: 6
Views: 1848

fastest way to get yuv table in firmware developing

Hi, I am developing ntsc/pal shield. And writing driver in C. http://forums.openmv.io/viewtopic.php?f=6&t=948 I have done everything, except to send yuv table. the vs23 chip need VUY 224 streaming,(other format 8bit is OK by setting the chip). I don't know how to get YUV is the most convenient and m...
by kidswong999
Thu Sep 27, 2018 7:23 am
Forum: Technical Discussion
Topic: output AV anolog video such as NTSC
Replies: 2
Views: 1012

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: 1012

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: 1140

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: 1140

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: 858

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: 1249

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: 1249

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: 1249

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: 8
Views: 2415

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: 713

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: 10
Views: 4325

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: 818

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: 1229

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: 1103

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: 1107

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: 3013

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: 2472

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 2472 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: 9649

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: 9649

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: 9649

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: 9649

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: 9649

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: 9649

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: 1542

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: 3168

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: 2256

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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