deskthority

How quickly do they power up?

You could power up one row and while reading another and then turn off the row after reading....

This would require a fast start up time.


Sent from my iPhone using Tapatalk Pro

I have an option jumper which you can solder - it's two semi circles with a small gap been the two flats. If you add a connection between the two halves on the schematic you get a cut track which can be resoldered as needed.

Sent from my SM-G900V using Tapatalk

Here's the current status of the PCB for the new OneHand design. I've changed this version to use a 1.5u cap on the two larger keys as this allows a more compact PCB, and removes the headache of sourcing stabilizers. I may revert to the 2u keys if needed in the future.

The design uses a 48-pin ...

Apologies for the lack of progress. I'm working on a simplest PCB design - to allow me to remove the need for the Teensy.

I'm on vacation for the next couple of weeks, so should make some progress.

In the interim I'm going to order some more of the V1 PCBs - and I'll send them out to interested ...

Anybody but Trump. He's not a real business man, and is just selling his name as a brand. If he can show a net worth of over 1 billion then I may reconsider, but not getting from 200 million to billion in the time he's been in business would be very revealing.



He has many more failed businesses ...

Hi All,

Sorry for the slow response to the thread. Life's been a little hectic recently...

I'm still working on the STM32F072 based board with bluetooth, but I don't like how big the PCB was getting so I'm moving the CPU location.

I've attached ALL the versions of code I could find for the ...

@scottc, I'll dig out my code and send it to you.

I had a version which used complex chords originally, but ended up on modes and simpler chords which I found simpler.

You need to install the Teensy arduino development system (or at least the loader), and I can give you the source code for my initial version.



I'm currently working on an updated version which uses an STM32F072 and has the option of adding a bluetooth hid interface and battery, but work has ...

My design used a derivative of the Adafruit design, with a battery charger ic connected to the USB, and then step down the battery to 3V or so. The design is very small, but a little tricky to solder - I may need to buy a SMD oven...

I'll look at the TMK firmware to see what it can do. The main ...

Separate footprints, with the Bluetooth at the top. The main issue is if your using BT then you need a battery charger circuit, powered by the USB so you can run disconnected.

I've decided to create a simple STM32F072 only board first, and add Bluetooth later.

I'm working on the software using ...

I was not expecting to use the same code, but thought it may be possible to make a board which used either CPU to scan the matrix, but given the cost of the STM32 it might be simpler to use this to control the matrix and act as a programming interface for the Bluetooth module. I'm playing with a ...

Apologies for the lack of progress. Just before I pulled the trigger on the PCBs I saw the STM32F072 CPU, and nRF51822 Bluetooth module...

The STM32F072 has a crystal-less USB making the PCB easier, and a USB bootloader, which should allow software updates over USB. All for around $5.

The nRF51822 ...

DaGameFace wrote:

The PCBs cost around $2.50 each plus shipping.

Where are you ordering these pcbs from?

The original boards were from Seeedstudio via their Fusion PCB store. You need to keep the PCB under 10cm x 10cm to get the low $20 for 10 price.

I'm currently making versions of the V1 design with Teensy 2.0 , 3.1 and ProMicro (with restrictions). I'm waiting on the slow shipping...

The key switches would be PCB mount Cherry MX. I haven't used a metal plate, but this would be a possibility in the future.

I'm looking to provide an assembled V1 unit without the keycaps for the cost of the components plus shipping. I don't have a price just yet. You'd just need to find keycaps ...

The V1 uses a Teensy 2.0, but could quickly be swapped to a 3.1 as long as I don't add functionality. I'll look at it tonight.

I've just given the V1 a look over and made the corrections. I'm ordering a PCB for work, and I'll tag on some boards to save shipping.

I'll look at getting a price for a fully built unit (less keycaps). It should be around $50 including the Teensy. This would be for a PCB with all mounted components. I've tested a few MX switches, but I'm still looking for the optimum format.

There should be no issue generating any normal ...

Right now, I'm interested in a trio of boards for one hand usage. If the small components are smd, it would be nice if they could come pre-soldered (obviously, I would pay extra for this).
There are only five SMD resistors for the LEDs on the V1 design. I would mount these parts and the four screw ...

How many are just using this one handed?

I keep changing the new design, but I can quickly swap two connections on the old design to fix the error which required the removal of one of the Teensy's LEDs as I was using the pin as an input with pull-up.

I'd like to know how many I need to order. Up ...

Do you know pricing? Trying to gauge expenses. BIG thank you, PJE!!
Up until now I've been giving the PCBs away. The PCBs cost around $2.50 each plus shipping. The main cost is the Teensy, switches and keycaps.

The V1 uses a Teensy 2.0, the V2 is also a Teensy 2.0, but I'm also doing a Teensy 3.1 ...

Apologies for the delay. I keep adding things. I've just upgraded my PCB package and will be doing one more spin through the V2 board. The wait should not be too long now!

Sorry for the slow progress on the PCBs, I keep adding things, and the last change was the ability to add a Nextion LCD panel for help on layer information and other status displays....

I just received the 2.4" and 4.3" units today, and will be checking the interface and code requirements prior to ...

Hi all,

Things have been very very hectic for me for the last few months with my day job...

I'm just about to do a last look through the PCB before ordering them. I'll let you all know when they come in. I'm going to order some MX switches, and will hope to supply partially built units for people ...

You may also be able to use individual pin socket inserts embedded in the PCB. These sockets can sit flush with the PCB depending on they style chosen.

Is there a way to import a footprint of a cherry mx switch?...
...or do you just have to make one yourself using dimensions from cherrys website
Also ive been looking into getting a PCB printed and have found a few websites, im curious where did you get yours?
I had to create my own PCB symbol as ...

What software did you use to design those PCB's? And where did you order from?

I plan on making a mini keypad with a 3 by 4 of cherry keys as close together as possible (only 1mm between) and using my schools 3d printer for custom key caps and frame. Going to be using a ProMicro that I have laying ...

great news! Well actually MX Clears sounds more interesting ;)

Then I skip the Ergodox keys.
sculpted style? Sorry for stupid question but what do you mean with that? :)

Thank you!
Standard keys have a different shape based on the row, which limits you to mounting a letter on its specific row to ...

So the keycaps you need for this keyboard is they once ergo dox uses, right? :)
I found a source of new MX Brown PCB mount at MechanicalKeyboards.com. $49 for 100.. They also have other styles, so I might also try clears...

For keycaps, DSA profile is going to be the best if you want key labels ...

This is so freaking cool!
Would do anything to own this awesome keyboard!

So you could build a complete working TwoHand with MX Brown without key caps and USB cable for 80$+shipping?

I'll work out a more accurate price once I figure out where I can get 100 MX Browns with PCB mount. The switches ...