Author Topic: Goldfish v2 - A super thin USB-C Pro Micro clone  (Read 56413 times)

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Offline piit79

  • Posts: 382
Re: Goldfish - A super thin USB-C Pro Micro clone
« Reply #100 on: Fri, 29 January 2021, 03:11:23 »
Ordered the missing components because i needed some mosfets anyways. luckily i took notes before i abanded the project a few months ago.  :thumb:

Just got back to this thread after almost two years, because Elite-C expensive... :) I also found the alternative connector at LCSC, it's great that you confirmed that it works correctly. I'm a bit uneasy about the low stock (only 35 atm) - hope it's not discontinued. I want to see how much will LSCPCB assembly cost, I would eventually like to order ~50-100 for my little on-line shop I started in December. I offer good value through-hole kits and also Pro Micro based kits, so having a cheaper controller module with USB-C would be great.

Do you have a BOM at LCSC? I'll be watching with interest, hope you can finish your boards and confirm they work correctly :)

Thanks!

Offline DevilZmods

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Re: Goldfish - A super thin USB-C Pro Micro clone
« Reply #101 on: Fri, 29 January 2021, 04:50:32 »
I'll happily share the exact parts I ordered once can confirm them working :)

Offline piit79

  • Posts: 382
Re: Goldfish - A super thin USB-C Pro Micro clone
« Reply #102 on: Fri, 29 January 2021, 04:52:12 »
I'll happily share the exact parts I ordered once can confirm them working :)

That would help a lot, thanks!

Offline dr_derivative

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Re: Goldfish - A super thin USB-C Pro Micro clone
« Reply #103 on: Fri, 29 January 2021, 13:27:10 »
I'll happily share the exact parts I ordered once can confirm them working :)

If you (or anyone else) put together a BOM/other resources let me know and I'll add them to the first post and the readme on Github.

...
I would eventually like to order ~50-100 for my little on-line shop I started in December.
...

Let me know when you start selling them, I'll add a link to your store too.
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Offline tokas

  • Posts: 1
Re: Goldfish - A super thin USB-C Pro Micro clone
« Reply #104 on: Tue, 23 February 2021, 12:46:11 »
Had some done via PCB A , still had to solder the USB Connector by hand though :(
Works very nicely
262895-0

Offline cu99

  • Posts: 6
Re: Goldfish - A super thin USB-C Pro Micro clone
« Reply #105 on: Tue, 09 March 2021, 17:56:58 »
Ordered the missing components because i needed some mosfets anyways. luckily i took notes before i abanded the project a few months ago.  :thumb:

Just got back to this thread after almost two years, because Elite-C expensive... :) I also found the alternative connector at LCSC, it's great that you confirmed that it works correctly. I'm a bit uneasy about the low stock (only 35 atm) - hope it's not discontinued. I want to see how much will LSCPCB assembly cost, I would eventually like to order ~50-100 for my little on-line shop I started in December. I offer good value through-hole kits and also Pro Micro based kits, so having a cheaper controller module with USB-C would be great.

Do you have a BOM at LCSC? I'll be watching with interest, hope you can finish your boards and confirm they work correctly :)

Thanks!

Where can I buy your version?
is it https://shop.beekeeb.com/product/goldfish-rev-c-open-source-pro-micro-replacement/ or https://shop.tokas.co.uk/product/comet-usb-c-microcontroller ?

Offline dr_derivative

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  • Location: Cork, Ireland
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Re: Goldfish - A super thin USB-C Pro Micro clone
« Reply #106 on: Tue, 09 March 2021, 18:28:40 »
Ordered the missing components because i needed some mosfets anyways. luckily i took notes before i abanded the project a few months ago.  :thumb:

Just got back to this thread after almost two years, because Elite-C expensive... :) I also found the alternative connector at LCSC, it's great that you confirmed that it works correctly. I'm a bit uneasy about the low stock (only 35 atm) - hope it's not discontinued. I want to see how much will LSCPCB assembly cost, I would eventually like to order ~50-100 for my little on-line shop I started in December. I offer good value through-hole kits and also Pro Micro based kits, so having a cheaper controller module with USB-C would be great.

Do you have a BOM at LCSC? I'll be watching with interest, hope you can finish your boards and confirm they work correctly :)

Thanks!

Where can I buy your version?
is it https://shop.beekeeb.com/product/goldfish-rev-c-open-source-pro-micro-replacement/ or https://shop.tokas.co.uk/product/comet-usb-c-microcontroller ?


Tokas is selling boards at that second link. It's a modified design with a different USB-C connector.

I had no idea beekeeb is selling goldfish too ;D I have added links to both vendors to the original post and the Github repo.

Everyone, LMK if there are any other Goldfish or derivations for sale that I've missed and I'll add them too
GH/Reddit/DT: dr_derivative | Discord: dr_derivative#3618 | IG: dr_derivative_mk
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Offline cu99

  • Posts: 6
Re: Goldfish - A super thin USB-C Pro Micro clone
« Reply #107 on: Fri, 16 April 2021, 19:14:10 »

I can add some TVS diodes if transients do end up being a problem, but I doubt it's needed.


Is a TVS diode used for ESD protection?

Offline cu99

  • Posts: 6
Re: Goldfish - A super thin USB-C Pro Micro clone
« Reply #108 on: Fri, 16 April 2021, 19:21:06 »
What's the use of the R6 10k resistor?

Offline dr_derivative

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Re: Goldfish - A super thin USB-C Pro Micro clone
« Reply #109 on: Sat, 17 April 2021, 19:30:55 »
What's the use of the R6 10k resistor?

It pulls down VBUS and the UVCC pin when the board is powered by the VCC pin, not through the USB port.
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Offline dr_derivative

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Re: Goldfish v2 - A super thin USB-C Pro Micro clone
« Reply #110 on: Sat, 16 July 2022, 14:06:02 »
I recently updated the design of Goldfish with a couple changes I had been wanting to make for a long time to create a Golfish v2

I have ordered some prototypes for testing and I will update when those arrive. As before design files and Gerbers are available on the Github repo.

It has the following changes over the previous v1 designs:
  • Addition of on board ESD protection and polyfuse
  • All 0603 resistors and capacitors for (slightly) easier hand assembly
  • Castellated edge connectors similar to the Elite-C
  • Less obscure USB-C connector
    • Use of more commonly available components in 2022
    • Choice between multiple compatible connectors and suppliers
    • Uses USB 2.0-only connector for easier and cheaper assembly



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Offline piit79

  • Posts: 382
Re: Goldfish v2 - A super thin USB-C Pro Micro clone
« Reply #111 on: Fri, 29 July 2022, 08:37:41 »
Great job, thanks for continuing with the project! How is the availability and the price of ATmega32u4 these days? I'm not sure it still makes sense to use it though considering the RP2040 will have official QMK support very soon (or perhaps already has it? Struggling to keep track) and costs $1.30 (plus ~$1 for a QSPI flash)...

Offline dr_derivative

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  • Location: Cork, Ireland
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Re: Goldfish v2 - A super thin USB-C Pro Micro clone
« Reply #112 on: Fri, 29 July 2022, 14:25:46 »
Great job, thanks for continuing with the project! How is the availability and the price of ATmega32u4 these days? I'm not sure it still makes sense to use it though considering the RP2040 will have official QMK support very soon (or perhaps already has it? Struggling to keep track) and costs $1.30 (plus ~$1 for a QSPI flash)...

ATmega availability isn't great at the moment unfortunately, it's a big delay for me getting some v2 samples made.

I have thought about making a similar board with a different chip such as the RP2040. That probably would probably use a different name (maybe another kind of fish?) to make the difference clear. It would be cool to have a RPi zero with a Pro Micro footprint and USB-C :D
GH/Reddit/DT: dr_derivative | Discord: dr_derivative#3618 | IG: dr_derivative_mk
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