Page 1 of 1

Chinese Micropython Clones(?)

Posted: Fri May 04, 2018 2:53 pm
by bitninja
I came across this site... http://www.micropython.net.cn/ and was wondering what boards these are most similar too. Most of the site is in Chinese, so I can't tell very much. Are these Pyboard compatible clones... or are they more like the STM Discovery boards?

Re: Chinese Micropython Clones(?)

Posted: Fri May 04, 2018 6:19 pm
by loboris
There are couple of pyboard compatible boards like this or this one and some direct clones

Look at the Google translated page
Same for TPYBoard_V102

Re: Chinese Micropython Clones(?)

Posted: Sun May 06, 2018 7:35 am
by cefn
What is the moral/legal status of these? Illegal, stolen intellectual property or legitimate reuse of open-licensed designs. Not sure the licensing status of pyboard.

Re: Chinese Micropython Clones(?)

Posted: Sun May 06, 2018 9:10 am
by deshipu

Re: Chinese Micropython Clones(?)

Posted: Sun May 20, 2018 6:00 pm
by bitninja
Well I couldn't help myself...
20180520_124924.jpg
20180520_124924.jpg (225.89 KiB) Viewed 1166 times
20180515_185741.jpg
20180515_185741.jpg (231.74 KiB) Viewed 1166 times
20180515_185641.jpg
20180515_185641.jpg (204.6 KiB) Viewed 1166 times
The build quality was so-so in my opinion, as I expected. But it does work with everything I've tried so far.

Re: Chinese Micropython Clones(?)

Posted: Sun May 20, 2018 6:46 pm
by loboris
bitninja wrote:
Sun May 20, 2018 6:00 pm
The build quality was so-so in my opinion, as I expected. But it does work with everything I've tried so far.
Could you give more details about "so-so" build quality rating, please.

Re: Chinese Micropython Clones(?)

Posted: Mon May 21, 2018 12:34 am
by bitninja
Don't get me wrong, I am happy with the board... it's just some of the finishing work like the headers... they were soldered in pretty quickly apparently...
20180515_185641.jpg
20180515_185641.jpg (144.41 KiB) Viewed 1148 times
Notice the angle?

And some of the soldering is kind of blobish.
20180520_191754.jpg
20180520_191754.jpg (185.47 KiB) Viewed 1148 times
It's not terrible by any measure... the fine-pitch work is good and the silk-screening is aligned well and readable... even at the very edges of the board.

Re: Chinese Micropython Clones(?)

Posted: Mon May 21, 2018 6:35 am
by pythoncoder
An interesting test would be measure the current consumption after issuing pyb.standby(). A Pyboard V1.1 will take about 6μA. If they've used a cheapskate regulator it will be higher.

Re: Chinese Micropython Clones(?)

Posted: Mon May 21, 2018 2:52 pm
by bitninja
I don't have the equipment with me to run a test, but I can say that they seem to have used a "662K" regulator...
20180521_093920.jpg
20180521_093920.jpg (28.84 KiB) Viewed 1112 times
Which leads me to this info... https://www.mikrocontroller.net/attachm ... 6206N3.pdf
662K.png
662K.png (35.59 KiB) Viewed 1112 times