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Bastian Greshake Tzovaras
Bastian Greshake Tzovaras
@gedankenstuecke@scholar.social  ·  activity timestamp 2 weeks ago

@pjacock that's some great progress!

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Peter Cock
Peter Cock
@pjacock@fediscience.org replied  ·  activity timestamp 3 weeks ago

Found the first issue in my new #MechanicalKeyboard PCB design, the cut-out is not quite wide enough for the #RaspberryPi RP2040-Zero reset and boot buttons 😢

I’ll have to take a file to the PCB (outside well ventilated, with a mask on) 😷

2 media
Raspberry Pi RP2040-Zero controller (in blue) face up under a red PCB, not quite fitting the cutout which is too narrow (by less than 1mm).
Raspberry Pi RP2040-Zero controller (in blue) face up under a red PCB, not quite fitting the cutout which is too narrow (by less than 1mm).
Raspberry Pi RP2040-Zero controller (in blue) face up under a red PCB, not quite fitting the cutout which is too narrow (by less than 1mm).
Raspberry Pi RP2040-Zero controller (in blue) face down on a red PCB, not lying flat on the castellation solder pads as the cutout is too narrow.
Raspberry Pi RP2040-Zero controller (in blue) face down on a red PCB, not lying flat on the castellation solder pads as the cutout is too narrow.
Raspberry Pi RP2040-Zero controller (in blue) face down on a red PCB, not lying flat on the castellation solder pads as the cutout is too narrow.
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Peter Cock
Peter Cock
@pjacock@fediscience.org replied  ·  activity timestamp 3 weeks ago

Filing away a little off the PCBs worked, my latest #MechanicalKeyboard is coming together - now with a #RaspberryPi RP2040-Zero soldered in each half, and the switches done. Waiting on the through hole TRRS sockets (should be OK), and the surface mounted 5-way navigation buttons - they’ll be tricky to solder I fear!

2 media
32 key split keyboard partly assembled, black CS keycaps on Choc v1 switches, red Bivvy16D PCBs, and a blue RP2040-Zero controller in each half (face up on left, face down on right). Missing the 5-way navigation buttons and TRRS socket for the cable connection.
32 key split keyboard partly assembled, black CS keycaps on Choc v1 switches, red Bivvy16D PCBs, and a blue RP2040-Zero controller in each half (face up on left, face down on right). Missing the 5-way navigation buttons and TRRS socket for the cable connection.
32 key split keyboard partly assembled, black CS keycaps on Choc v1 switches, red Bivvy16D PCBs, and a blue RP2040-Zero controller in each half (face up on left, face down on right). Missing the 5-way navigation buttons and TRRS socket for the cable connection.
Same split keyboard but in 30 key configuration (single 1.75u thumb key for each hand). This almost requires a non-Qwerty layout…
Same split keyboard but in 30 key configuration (single 1.75u thumb key for each hand). This almost requires a non-Qwerty layout…
Same split keyboard but in 30 key configuration (single 1.75u thumb key for each hand). This almost requires a non-Qwerty layout…
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Peter Cock
Peter Cock
@pjacock@fediscience.org replied  ·  activity timestamp 3 weeks ago

Pushing my soldering skills with #MechanicalKeyboard design. The surface mounted 5-way navigation buttons were easier than I feared, but the (pre-planned) wires for the TRRS cable socket were much worse. Might simplify this if I make a revised version…

Photo of two red PCBs with components, two halves of a split keyboard.
Photo of two red PCBs with components, two halves of a split keyboard.
Photo of two red PCBs with components, two halves of a split keyboard.
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Peter Cock
Peter Cock
@pjacock@fediscience.org replied  ·  activity timestamp 2 weeks ago

I still don’t have the TSSR sockets to finish soldering this wired split #MechanicalKeyboard, so for now I’m testing it as two half keyboards and trying to find the best angles for the planned single piece follow up #ErgoMechKeyboard - here’s a cardboard prototype of a ~40 degree tended keyboard. It feels a bit too high up (could be lowered about 2cm), but usable…

2 media
Prototype ergonomic keyboard, two red PCBs with black key caps taped to a base made of cardboard. Each half is tented as about 40 degrees, and the pair have about 40 degrees between them. This photo is viewed from above as if looking down at the desk.
Prototype ergonomic keyboard, two red PCBs with black key caps taped to a base made of cardboard. Each half is tented as about 40 degrees, and the pair have about 40 degrees between them. This photo is viewed from above as if looking down at the desk.
Prototype ergonomic keyboard, two red PCBs with black key caps taped to a base made of cardboard. Each half is tented as about 40 degrees, and the pair have about 40 degrees between them. This photo is viewed from above as if looking down at the desk.
Prototype ergonomic keyboard, two red PCBs with black key caps taped to a base made of cardboard. Each half is tented as about 40 degrees, and the pair have about 40 degrees between them. This photo is viewed from the where the computer monitor would be.
Prototype ergonomic keyboard, two red PCBs with black key caps taped to a base made of cardboard. Each half is tented as about 40 degrees, and the pair have about 40 degrees between them. This photo is viewed from the where the computer monitor would be.
Prototype ergonomic keyboard, two red PCBs with black key caps taped to a base made of cardboard. Each half is tented as about 40 degrees, and the pair have about 40 degrees between them. This photo is viewed from the where the computer monitor would be.
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Bastian Greshake Tzovaras
Bastian Greshake Tzovaras
@gedankenstuecke@scholar.social replied  ·  activity timestamp 2 weeks ago

@pjacock that's some great progress!

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Peter Cock
Peter Cock
@pjacock@fediscience.org replied  ·  activity timestamp 2 weeks ago

@gedankenstuecke This ~40% tenting angle on the #MechanicalKeyboard prototype does feel reasonably comfy, the different keycaps too. My speed has taken a slight hit (expected), but the accuracy... 😭

[Some of this is that it is currently running as two separate half keyboards, and I do notice keys can arrive out of order. Hoping the missing components arrive soon to eliminate that factor]

Keybr typing profile graph over 2000 sessions. Green line is speed, rose from 15wpm to stable wavering under 50wpm for the last third (just dropped to about 40wpm). Purple line is letters in lessons, nearly all unlocked over this time. Red is accuracy Started at 97% (but slow), dropped to about 90% but for last third was wavering in 95~97% (now plummeted to ~88%).
Keybr typing profile graph over 2000 sessions. Green line is speed, rose from 15wpm to stable wavering under 50wpm for the last third (just dropped to about 40wpm). Purple line is letters in lessons, nearly all unlocked over this time. Red is accuracy Started at 97% (but slow), dropped to about 90% but for last third was wavering in 95~97% (now plummeted to ~88%).
Keybr typing profile graph over 2000 sessions. Green line is speed, rose from 15wpm to stable wavering under 50wpm for the last third (just dropped to about 40wpm). Purple line is letters in lessons, nearly all unlocked over this time. Red is accuracy Started at 97% (but slow), dropped to about 90% but for last third was wavering in 95~97% (now plummeted to ~88%).
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