ErgoMechKeyboards

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Ergonomic, split and other weird keyboards

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Keep it ergo

Posts must be of/about keyboards that have a clear delineation between the left and right halves of the keyboard, column stagger, or both. This includes one-handed (one half doesn't exist, what clearer delineation is that!?)

i.e. no regular non-split¹ row-stagger and no non-split¹ ortholinear²

¹ split meaning a separation of the halves, whether fixed in place or entirely separate, both are fine.
² ortholinear meaning keys layed out in a grid

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Some useful links

EMK wiki
Split keyboard compare tool
Compare keycap profiles Looking for another set of keycaps - check this site to compare the different keycap profiles https://www.keycaps.info/
Keymap database A database with all kinds of keymap layouts - some of them fits ergo keyboards - get inspired https://keymapdb.com/

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Easily replaceable battery for wireless splits while travelling? (lemmy.world)

submitted 1 year ago* (last edited 1 year ago) by [email protected] to c/[email protected]

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[EDITED for clarity]

Hi folks. For my next wireless split build, I'm exploring battery options for easy replacement while travelling. In this scenario, the battery's reached its end of life and needs to be disposed of/replaced with a new one. However, it's difficult to receive parcels or have access to a workshop while on the move, so the dead battery should be swappable without specialised tools, and the replacement battery should be easily sourced from any local hardware store.

For some background, this just happened to me. The LiPo in my current board was directly soldered to my nice!nano (bad choice, I know). Used the board on wired mode for a while, but the USB-C port became loose at some point due to accidental dragging and unplugging (I couldn't find a magnetic USB adapter). Most local shops didn't have the 3.7 V thin-ish LiPos that I often see in wireless splits, and language barrier made finding things difficult. Fortunately, I found a replacement battery (of dubious quality), but I want to make a dedicated battery slot in my next upgrade/build in case this happens again.

I know adding JST connector is an option, but the issue is, 3.7 V LiPos can be hard to find in some countries. I'm thinking of using AA or AAA-sized batteries (one-time usage or rechargeable type). Or use an RC LiPo (7.4 V?) but step down to around 3.7 V. Not sure what additional circuit or component would be required for this.

Has anyone tried to use such batteries for your split keyboards, or have seen a project that uses them? Also, if not AA/AAA-sized batteries, what other types and/or build would you suggest for this scenario?

(Photo from: https://www.dnkpower.com/lithium-polymer-battery-guide/)

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[–] [email protected] 1 points 1 year ago* (last edited 1 year ago)

While it may not be as common as 18650 or especially a AAA. A 14500 battery is as small as an AAA while retaining the same chemistry/voltages of normal lithiums you see used with a nice nano. Could be your best bet if you want small but easier to source/replace. An 18650 is your best bet on availability though, but they are huge compared to what we normally use.

AAA batteries operate at 1.5v nominal, so a nice nano would not be able to be powered by them/it would overcharge it.