Search found 264 matches

by pomk
15 Dec 2016, 12:04
Forum: Workshop
Topic: Can we design the teensy alternative for keyboards?
Replies: 808
Views: 54413

Yeah, sure. There is not much room for silk screening everything, or the text becomes unreadable. We could just mark the pins that you really should avoid though. Any suggestions on how to mark suff would be helpful. I already added the pull ups to the pcb layout without problems.
by pomk
14 Dec 2016, 10:35
Forum: Workshop
Topic: Switch chattering and low voltage MCUs
Replies: 35
Views: 2599

I use the nrf51 chip from nordic. It has a very low power 'stop execution, wait for interrupts' state it can be forced to go to. In that state, if no bluetooth connection needs to be probed, the power consumption is a bit over 2µA if I remember correctly. Depending on what connection settings are fo...
by pomk
12 Dec 2016, 13:44
Forum: Group buys
Topic: [Interest Check] Elder Futhark keyset(Dyesub PBT)
Replies: 38
Views: 3779

I would have bought them even if the profile was oem. :oops:
by pomk
12 Dec 2016, 12:46
Forum: Group buys
Topic: [Interest Check] Elder Futhark keyset(Dyesub PBT)
Replies: 38
Views: 3779

photekq wrote: Gah, will these definitely be in that crappy Ducky profile?
As far as I know these are step sculpture 2, so a bit lower than ducky oem profile.
by pomk
11 Dec 2016, 02:18
Forum: Workshop
Topic: Switch chattering and low voltage MCUs
Replies: 35
Views: 2599

Of course! Knowledge = power and all that ;)

I also plan on launching a GB next week, or an interest check to be more precise.
by pomk
10 Dec 2016, 13:27
Forum: Workshop
Topic: Switch chattering and low voltage MCUs
Replies: 35
Views: 2599

It seems that the batch of gateron blues I had was just very bad. I made another keyboard, using the same diodes and whatnot, and cannot observe the same behavior using the very same batteries. This time the board was built using plate mounted black bottom gateron browns, while the previous one was ...
by pomk
09 Dec 2016, 01:21
Forum: Workshop
Topic: Can we design the teensy alternative for keyboards?
Replies: 808
Views: 54413

The switches are not connected to anything on the board, so a proper design will either hand wire to them as well, or has a motherboard pcb with traces to them.
by pomk
08 Dec 2016, 18:29
Forum: Workshop
Topic: Can we design the teensy alternative for keyboards?
Replies: 808
Views: 54413

The PCB edges can be continuous plated slots ;)
by pomk
08 Dec 2016, 10:28
Forum: Workshop
Topic: Can we design the teensy alternative for keyboards?
Replies: 808
Views: 54413

I'm not sure if just conductive case is enough, as the switch holes are quite large on one side. I'd use 4 layer PCB with solid ground planes on the top and bottom layers.
by pomk
07 Dec 2016, 17:11
Forum: Workshop
Topic: Can we design the teensy alternative for keyboards?
Replies: 808
Views: 54413

Well their antenna in the test was just a one meter wire on a table, and does not really reflect the performance one could get with some additional research. :) Also if the matrix is scanned in one go, as in most mechanical keyboards, one just receives the peaks in a fast successions and you need to...
by pomk
07 Dec 2016, 15:52
Forum: Workshop
Topic: Hi-Profile PBT Dye-sub (the time has come)
Replies: 1283
Views: 101194

I believe the initial batch is going out as part of this GB https://geekhack.org/index.php?topic=77300.0
On the last couple of pages there are already some pictures.
by pomk
07 Dec 2016, 14:28
Forum: Workshop
Topic: Hi-Profile PBT Dye-sub (the time has come)
Replies: 1283
Views: 101194

It would likely be almost twice as expensive, as the number of parts to produce a key set is doubled. MX sliders will soon be available from JTK, I think that they are a better solution.
by pomk
07 Dec 2016, 14:00
Forum: Workshop
Topic: Can we design the teensy alternative for keyboards?
Replies: 808
Views: 54413

I'm not aware of any bt chip that would have a usb core on it, of course v-usb could be used to deliver the firmware via a cable. Also bt 4.x uses 128bit AES, which I have thought to be quite secure. The paper is available here: https://www.usenix.org/legacy/events/sec09/tech/full_papers/vuagnoux.pd...
by pomk
07 Dec 2016, 12:55
Forum: Group buys
Topic: [Interest Check] Elder Futhark keyset(Dyesub PBT)
Replies: 38
Views: 3779

Besides, I associate the traditional norse lettering with stone, as it was presumably designed so that it is easy to carve on wood or stone.
by pomk
07 Dec 2016, 12:23
Forum: Group buys
Topic: Interest Checks Elvish PBT SA dye-sub & Laser Engraved Keycap set
Replies: 7
Views: 799

sennin32 wrote:
DarKou wrote: Hello,

All rows are R3 ? Any options for MX HHKB, Plank or other keyboards ?

Regards,
DarKou
It's 223333
For now only standard ANSI 104
Could you post a picture with a side by side comparison on all sides with signature plastics SA? What is the thickness of the caps?
by pomk
07 Dec 2016, 12:08
Forum: Group buys
Topic: [Interest Check] Elder Futhark keyset(Dyesub PBT)
Replies: 38
Views: 3779

I think that anything from white to medium grey would probably work fine.
by pomk
07 Dec 2016, 11:57
Forum: Workshop
Topic: Can we design the teensy alternative for keyboards?
Replies: 808
Views: 54413

Well if the thought of someone constantly looking to update your KB firmware via an elaborate hack is too much (I'm by profession very interested in how this could be done), one option is to go to a safe location for the firmware update. A cabin in the woods would be a natural choice, at least for u...
by pomk
06 Dec 2016, 22:38
Forum: Workshop
Topic: Can we design the teensy alternative for keyboards?
Replies: 808
Views: 54413

I just find it far more probable, that should someone wish to update your keyboard firmware unknown to you, he would do so by gaining access to your PC instead of trying to crack the problem with combined physical access (you have to press buttons to start the firmware update process and these can b...
by pomk
06 Dec 2016, 12:58
Forum: Workshop
Topic: Can we design the teensy alternative for keyboards?
Replies: 808
Views: 54413

You do know that both of the connected parties employ a 128-256 bit encryption scheme, and validate each other with a key that is not shared via the wireless connection? I'd be more worried about someone listening your wired keyboard already in the room next door. http://www.pcworld.com/article/1611...
by pomk
06 Dec 2016, 11:59
Forum: Workshop
Topic: Can we design the teensy alternative for keyboards?
Replies: 808
Views: 54413

Good thing that you can just disable usb completely when using wireless keyboards ;)
by pomk
06 Dec 2016, 11:49
Forum: Workshop
Topic: Can we design the teensy alternative for keyboards?
Replies: 808
Views: 54413

I don't see the problem here. The firmware bootloader checks if a certain key-combo is pressed before starting the bt radio, and if not, boots the previously installed firmware. It would be suspectible to attacks only in the update mode, and even then would have to be done in great synchronization w...
by pomk
05 Dec 2016, 23:24
Forum: Workshop
Topic: Can we design the teensy alternative for keyboards?
Replies: 808
Views: 54413

Just thinking ahead here :) I went through the PCB again, and it looks to be fine even after the routing for the two pull-ups. Before any meaningful amount of boards are to be ordered, it would be good if someone with real skill would go and validate the HW design in its entirety. I know one person ...
by pomk
05 Dec 2016, 23:08
Forum: Workshop
Topic: Can we design the teensy alternative for keyboards?
Replies: 808
Views: 54413

yeah, no need for a pesky usb connector ruining otherwise clean looking cases anymore ;)
by pomk
05 Dec 2016, 22:55
Forum: Group buys
Topic: [Interest Check] Elder Futhark keyset(Dyesub PBT)
Replies: 38
Views: 3779

We have 1.75u shift confirmed. Purchase confirmed! Great. Also, I am not sure if I will be available to get you 7u spacebar and 1.5u mods even if I really want those myself. I think that stepped capslock is more popular than wkl mods otherwise, and if talking about single key additions to the set, ...
by pomk
05 Dec 2016, 18:38
Forum: Workshop
Topic: Can we design the teensy alternative for keyboards?
Replies: 808
Views: 54413

Resistors and pins are fine for a couple of leds, just dont overdo it by going beyond total of 100mA. As for bt, I was talking about a bt only solution with wireless firmware updates.
by pomk
05 Dec 2016, 11:31
Forum: Workshop
Topic: Can we design the teensy alternative for keyboards?
Replies: 808
Views: 54413

do you think we need another round of prototypes or we could go straight to production? There are still some tests to be made. The two I had in mind are a shorting the regulator to see that no permanent damage is done and mechanical rigidity test of the USB socket. If the first test fails, then a f...
by pomk
05 Dec 2016, 10:13
Forum: Group buys
Topic: [Interest Check] Elder Futhark keyset(Dyesub PBT)
Replies: 38
Views: 3779

LeandreN wrote: We have 1.75u shift confirmed.
Purchase confirmed!
by pomk
04 Dec 2016, 19:53
Forum: Workshop
Topic: Can we design the teensy alternative for keyboards?
Replies: 808
Views: 54413

Adding the two resistors can be done with minimal modifications to the overall routing.
rev1_00.png
rev1_00.png (125.37 KiB) Viewed 811 times
by pomk
04 Dec 2016, 15:48
Forum: Workshop
Topic: Can we design the teensy alternative for keyboards?
Replies: 808
Views: 54413

tentator wrote: I also would like a BT extension and about leds supporr I think more than the 3 locks and an accent light below the keyboard I wouldn't do more.. not interested in Christmas tree keyboards :)
I'm not talking about extension. That makes no sense if the purpose is in having a good battery life.
by pomk
04 Dec 2016, 15:36
Forum: Workshop
Topic: Can we design the teensy alternative for keyboards?
Replies: 808
Views: 54413

I'm not sure if it would be possible to somehow toggle them as well though. Maybe if the forward voltage is enough they could be connected to one pin on the elf, and toggle the pin from input low to output low. Effectively adding/removing 10k resistor from the circuit. You'd have to be careful thou...

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