<![CDATA[V-function Face Detect not working on Unit-V]]>Just got a Unit-V and was trying to use the face detection V-function. I burned the FaceDetect v1.1 firmware to the Unit-V using the M5Burner. I used the example in the docs (but on an M5StickC-Plus instead of a core) and I can't get it to detect anything.

0_1603109645253_Screen Shot 2020-10-19 at 8.13.52 AM.png

Looking at the serial logs of the Unit-V, there is this error:

[MAIXPY]Pll0:freq:832000000
[MAIXPY]Pll1:freq:398666666
[MAIXPY]Pll2:freq:45066666
[MAIXPY]cpu:freq:416000000
[MAIXPY]kpu:freq:398666666
[MAIXPY]Flash:0xef:0x17
open second core...
gc heap=0x801b4c30-0x80234c30(524288)
Traceback (most recent call last):
  File "_boot.py", line 11, in <module>
  File "pmu.py", line 53, in __init__
NotFoundError: 
MicroPython v0.5.0-98-g7ec09ea22-dirty on 2020-08-05; Sipeed_M1 with kendryte-k210
Type "help()" for more information.
>>>

I think the firmware is not correct for the Unit-V. Any ideas?

]]>https://community.m5stack.com/topic/2395/v-function-face-detect-not-working-on-unit-vRSS for NodeWed, 29 Apr 2026 10:23:53 GMTMon, 19 Oct 2020 12:21:52 GMT60<![CDATA[Reply to V-function Face Detect not working on Unit-V on Fri, 30 Oct 2020 22:22:55 GMT]]>@m5stack I have tried Tag36H11 images for numbers and this makes no difference. UnitV with M5Stack Fire and UIFlow did not decode the images. I did not make any alternation to my UIFlow code. Did you test this software?

]]>https://community.m5stack.com/post/10551https://community.m5stack.com/post/10551Fri, 30 Oct 2020 22:22:55 GMT<![CDATA[Reply to V-function Face Detect not working on Unit-V on Thu, 29 Oct 2020 09:32:55 GMT]]>@dsrc12 you could change the tag class. the v-function only supported the Tag36H11

]]>https://community.m5stack.com/post/10520https://community.m5stack.com/post/10520Thu, 29 Oct 2020 09:32:55 GMT<![CDATA[Reply to V-function Face Detect not working on Unit-V on Wed, 28 Oct 2020 23:46:45 GMT]]>@dsrc12 I still can not get any of the code software modules such as Bar code or April Tag to work with either M5StickC Plus or Fire. Here are some of my screen shots.
0_1603928787441_Capture01.JPG
0_1603928799881_Capture02.JPG

]]>https://community.m5stack.com/post/10514https://community.m5stack.com/post/10514Wed, 28 Oct 2020 23:46:45 GMT<![CDATA[Reply to V-function Face Detect not working on Unit-V on Wed, 28 Oct 2020 23:44:30 GMT]]>@m5stack Thanks for the link. I would recommend that you put a link to this tutorial from the product documentation

]]>https://community.m5stack.com/post/10513https://community.m5stack.com/post/10513Wed, 28 Oct 2020 23:44:30 GMT<![CDATA[Reply to V-function Face Detect not working on Unit-V on Fri, 23 Oct 2020 18:07:27 GMT]]>@m5stack said in V-function Face Detect not working on Unit-V:

we just release a new firmware. you could remove the firmware then redownload it(same firmware version number) in the M5Burner firmware list. will be ok

Thanks. With the updated firmware, now I have the face detection v-function working now with the example in the docs.

]]>https://community.m5stack.com/post/10442https://community.m5stack.com/post/10442Fri, 23 Oct 2020 18:07:27 GMT<![CDATA[Reply to V-function Face Detect not working on Unit-V on Thu, 22 Oct 2020 03:05:27 GMT]]>we just release a new firmware. you could remove the firmware then redownload it(same firmware version number) in the M5Burner firmware list. will be ok

]]>https://community.m5stack.com/post/10424https://community.m5stack.com/post/10424Thu, 22 Oct 2020 03:05:27 GMT<![CDATA[Reply to V-function Face Detect not working on Unit-V on Thu, 22 Oct 2020 01:24:26 GMT]]>it is a bug. we will fix it as soon as possible.

actually, we have provided the tutorial document

https://docs.m5stack.com/#/en/quick_start/unitv/v_function

]]>https://community.m5stack.com/post/10423https://community.m5stack.com/post/10423Thu, 22 Oct 2020 01:24:26 GMT<![CDATA[Reply to V-function Face Detect not working on Unit-V on Tue, 20 Oct 2020 06:24:20 GMT]]>Hello world101, I have a similar problem. None of the UIFlow Unit V examples work. I am using a M5StickC and the latest firmware on both M5StickC (1.6.4) and Unit V. I would appreciate better help from M5Stack - there are no examples, no help and little documentation - it is all guess work. Others have suggested differences between the two V modules and a flip in image orientation may be required.

]]>https://community.m5stack.com/post/10405https://community.m5stack.com/post/10405Tue, 20 Oct 2020 06:24:20 GMT