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GloomyGhost
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Yuzuki2040, I made the pico board myself

Sun Aug 01, 2021 11:03 am

Just use EasyEDA to draw a pcb, all schematic and pcb are Open Source based on CERN Open Hardware Licence Version 2 - Strongly Reciprocal license.

Github: https://github.com/YuzukiHD/Yuzuki2040

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So happy to have my first own-made development board :D :D
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karadev
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Re: Yuzuki2040, I made the pico board myself

Sun Aug 01, 2021 4:55 pm

cool mate, look is great :) i have a sugestion for next version of pcb. set on pcb and RESET button near by BOOT SELECT button to not need replug usb cable any time ;) see in net how need to connect RESET button to RPI2040.
link >>> https://www.raspberrypi.org/blog/how-to ... y-pi-pico/
http://www.karadev.net - electronic systems hardware, software, programming, LINUX, PICO and more :)

SirSydom
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Joined: Mon Jan 18, 2021 7:38 am

Re: Yuzuki2040, I made the pico board myself

Mon Aug 02, 2021 7:21 am

where are all those decoupling Cs ?

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aallan
Raspberry Pi Trading Employee & Forum Moderator
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Re: Yuzuki2040, I made the pico board myself

Mon Aug 02, 2021 8:10 am

SirSydom wrote:
Mon Aug 02, 2021 7:21 am
where are all those decoupling Cs ?

They do seem to be absent? Although it could be a double-sided board perhaps? Should be as close as possible to the power pins, see "Hardware design with RP2040".
An extract from %22Hardware Design with RP2040%22.jpg
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GloomyGhost
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Re: Yuzuki2040, I made the pico board myself

Mon Aug 02, 2021 11:36 am

SirSydom wrote:
Mon Aug 02, 2021 7:21 am
where are all those decoupling Cs ?
Well, I just simply removed a lot of decoupling caps. Because this is a double-layer board and with a linear regulator AMS1117-3.3 as the power, Beside I put almost all of the gpios circuit to the first layer. I think it is also feasible to simplify some capacitors. There was no problem in my test, but the stability may not be so good, I will consider adding it in a later version

By the way, I only use two caps for decoupling, which is above to the crystal circuit.

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Last edited by GloomyGhost on Mon Aug 02, 2021 11:48 am, edited 1 time in total.
Student from China

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GloomyGhost
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Re: Yuzuki2040, I made the pico board myself

Mon Aug 02, 2021 11:42 am

karadev wrote:
Sun Aug 01, 2021 4:55 pm
cool mate, look is great :) i have a sugestion for next version of pcb. set on pcb and RESET button near by BOOT SELECT button to not need replug usb cable any time ;) see in net how need to connect RESET button to RPI2040.
link >>> https://www.raspberrypi.org/blog/how-to ... y-pi-pico/
Thanks! I will add it
Student from China

karadev
Posts: 24
Joined: Tue Feb 09, 2021 2:06 pm
Location: Varna DC
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Re: Yuzuki2040, I made the pico board myself

Mon Aug 02, 2021 4:23 pm

coool mate, also make pin headers bread board frendly raster :) to can use it directly in bread board. did you see my pcb design for rpi pico shield ???
see here >>> http://www.karadev.net/site/index.php/rpidevelop
and here others pcb in rpi pico set >>> http://www.karadev.net/site/index.php/rpidevelop3
http://www.karadev.net - electronic systems hardware, software, programming, LINUX, PICO and more :)

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GloomyGhost
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Re: Yuzuki2040, I made the pico board myself

Mon Aug 09, 2021 1:11 pm

New Version, add CH340N as USB to UART.

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By the way, I tried many flash chips such as GD25Q16CSIG, W25Q128FWPM, GD25Q80BSIG, but only GD25Q80BSIG work as well. I also change some data in the pico-sdk but no effort. I wonder how to debug with the flash problem.
Student from China

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GloomyGhost
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Re: Yuzuki2040, I made the pico board myself

Sun Sep 12, 2021 6:10 am

Add a new version and add reset button
And Make MicroPython Run
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Student from China

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