geekhack Projects > Making Stuff Together!
Goldfish v2 - A super thin USB-C Pro Micro clone
dr_derivative:
--- Quote from: MatchstickMan on Thu, 18 January 2018, 09:43:43 ---This is excellent! I'm definitely interested in a buy for these.
It might be equally interesting to match the pro-micro layout of pins, USB connector, and such for direct retrofitability with the Pro Micro.
--- End quote ---
Pin layout is identical, it can be used as a direct replacement for a Pro Micro. It just has a couple extra pins along the bottom for hand wired builds :D .
MatchstickMan:
--- Quote from: dr_derivative on Thu, 18 January 2018, 09:47:04 ---Pin layout is identical, it can be used as a direct replacement for a Pro Micro. It just has a couple extra pins along the bottom for hand wired builds :D .
--- End quote ---
Awesome, but if the USB location is different (top mounted vs center mounted), it could be an issue for existing cases. For instance, there are a number of Lets Split cases that may not be compatible with this configuration.
Of course, center-mount should be the default because the space savings is fantastic, but it may be worth having a second configuration that has the USB-C port top mounted just for retrofitability purposes.
Alternatively, the cases may have holes large enough that it doesn't matter. In which case IGNORE ME.
dr_derivative:
--- Quote from: MatchstickMan on Thu, 18 January 2018, 13:32:36 ---
--- Quote from: dr_derivative on Thu, 18 January 2018, 09:47:04 ---Pin layout is identical, it can be used as a direct replacement for a Pro Micro. It just has a couple extra pins along the bottom for hand wired builds :D .
--- End quote ---
Awesome, but if the USB location is different (top mounted vs center mounted), it could be an issue for existing cases. For instance, there are a number of Lets Split cases that may not be compatible with this configuration.
Of course, center-mount should be the default because the space savings is fantastic, but it may be worth having a second configuration that has the USB-C port top mounted just for retrofitability purposes.
Alternatively, the cases may have holes large enough that it doesn't matter. In which case IGNORE ME.
--- End quote ---
I think most let's split cases have a fairly loose fit around the connector since the Pro Micro attaches upside down on one half. Also, one of the main advantages of the slimmer controller is that the whole keyboard can be made slimmer, so a different, thinner case could be used anyway. That being said, it's not too difficult to adapt the design with a top mounted connector if there's demand. I guess we'll find out if this gets to IC phase ;D .
monkeyplusplus:
These look super fun! Will these be flashable with dfu?
dr_derivative:
--- Quote from: monkeyplusplus on Thu, 18 January 2018, 15:48:01 ---These look super fun! Will these be flashable with dfu?
--- End quote ---
I'm not sure what I'll do about the bootloader since the QFN version of the ATMega32u4 comes without one pre-installed. I could flash the Pro Micro's default bootloader which uses AVRDude or LUFA DFU which uses DFU-programmer.
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