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geekhack Projects => Making Stuff Together! => Topic started by: Rico on Thu, 03 February 2022, 14:47:57

Title: [open source] The Manta75 keyboard, from the Sea Collection
Post by: Rico on Thu, 03 February 2022, 14:47:57

Hello Geekhack!

Let me present you my latest finished keyboard project, the Manta75.

Introduction

The Manta75 is an exploded arrows and nav clusters 75% keyboard with a curvy bottom.
It is the second project of the Sea Collection and as such it's name is taken from one of the species we see in our oceans, the manta ray.

The well known Satisfaction 75 have this similar exploded arrows/nav clusters.
On the Manta75 I went with no knob and screen to maximize the number of available keys.

Open source

The hardware design is provided under the very permissive Creative Commons Attribution 4.0 International License.
The goal is to allow anyone to use all hardware design files with the least restrictions possible.
This licence will allow you to make your own Manta75 and even use the hardware design files for commercial purposes.

No planned GB

My main motivation is to make keyboard designs for fun.
Organizing a GB looks very time comsuming and risky for a one man operation, vendors are much more versed to this exercise than I will ever be.
While I don't have plans to organize a GB the opensource license allows anyone to organize one if he want to.     

GitHub project link
https://github.com/mymakercorner/the_manta75 (https://github.com/mymakercorner/the_manta75)
You will find a lot more information there, including design choices made and a lot of pictures.

MyMakerCorner website
https://mymakercorner.com (https://mymakercorner.com)
Keeping track of finished project here.

Features

• Two pieces case designed with Fusion360.
• PCB designed with Kicad 5.1.5.
• Bottom mount leaf spring plate design with optional friction fit gaskets.
• Unified C3 daughterboard
• QMK firmware with VIA and VIAL support.

Specifications

• Typing angle: 6 degrees
• Width: ~346mm
• Height: ~150mm
• Bezels size: 15mm all around.
• Front height: 18.3mm without bumpons, 19.7mm with bumpons.
• Top plate to top case distance: 7mm.
• Bumpons: 3M (reference SJ-5382).
• Screws:
• 6X M2.5x10 for top/bottom attachment
• 4X M2.5x4 for plate attachment
• 4X M2x4 for USB daughterboard attachment.
• Weight:
• Aluminium top and bottom case: ~1,46Kg
• Alumininum top and copper bottom case: ~4Kg

A few pictures

My own Manta75 with polished and brushed copper bottom
(https://i.imgur.com/8btg0bb.jpeg)(https://i.imgur.com/8kjP3QL.jpeg)(https://i.imgur.com/eDzOqV7.jpeg)

My friend's Manta75 with polished and brushed aluminum bottom
(https://i.imgur.com/vZPlQiJ.jpeg)(https://i.imgur.com/xflSfwN.jpeg)(https://i.imgur.com/wYpnL8r.jpeg)

A view of the bottom mounted leaf spring plate. 
Poron XRD gasket have been installed.
(https://i.imgur.com/ianzsdK.jpeg)(https://i.imgur.com/KW3hjmf.jpeg)

Title: Re: [open source] The Manta75 keyboard, from the Sea Collection
Post by: ht12345 on Fri, 04 February 2022, 14:20:33

Looks great!

Title: Re: [open source] The Manta75 keyboard, from the Sea Collection
Post by: Rico on Fri, 04 February 2022, 14:59:36

Thank you man :)