NPKC 17 Switch Tester Discussions | Drop

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NPKC 17 Switch Tester

Mech Keys

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A community member

Dec 14, 2015

PCB & firmware are available to anyone who want to build yours.
PCB: http://dirtypcbs.com/view.php?share=14162&accesskey=f429cad9a82d1292b1013e43a49ba001
Firmware: https://github.com/VinnyCordeiro/tmk_keyboard

Dec 14, 2015

Ziggurat

130

Jan 25, 2016

Does this firmware function with the PCB in this drop? Does it improve the functionality of the PCB in this drop? Can it be used to remap the keys of the PCB in this drop?

Jan 25, 2016

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A community member

Jan 25, 2016

ZigguratThe answer to the first question is no, the firmware I linked works only with the PCB I designed. It is based on tmk firmware, which is open source and highly customizable.
The PCB provided on this buy (or at least the one on the previous buy) is based on Microchip's PIC architecture. I have used the ATmega32U2 microcontroller, which uses Atmel's AVR architecture. They are not compatible with each other.

Jan 25, 2016

Traverse

Jan 26, 2016

BTW, I was wondering does the PCB you designed come with all the components on it?

Jan 26, 2016

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A community member

Jan 27, 2016

TraverseNo, just the bare PCB if you buy from the link I provided and you would buy 10 of them. I pretend to sell the boards that I'm not going to use with components soldered, but Brazilian post *still* didn't delivered them. No tracking number package = lowest delivery priority possible here. :(

Jan 27, 2016

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Traverse

Jan 27, 2016

How hard is it to put the SMD components on there, any idea? I wouldn't mind ordering 10 of them and soldering some if people are interested and it isn't too difficult.

Jan 27, 2016

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A community member

Jan 28, 2016

TraverseI have used 0805 sized resistors and capacitors, and used a through hole crystal, as I have some of them available at my drawer. Using a fine tip on your soldering iron it shouldn't be difficult at all to solder them. You just need tweezers to hold the components. I also used a through hole mini USB receptacle. They are $1 more expensive than the SMD versions but are way easier to solder.

Jan 28, 2016

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RubenMcNoobin

Jan 29, 2016

I looked at the PCB in your link earlier and don't see thru holes for LEDs. Will this numpad not support LEDs to solder in ourselves?

Jan 29, 2016

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A community member

Jan 29, 2016

RubenMcNoobinThis version do not have LED support. I already designed a version with LEDs, but I need to receive the prototype PCBs of the first version to see if it works or not. :-/

Jan 29, 2016

TwistingPatterns

Feb 14, 2016

I'm new to this type of shit so could someone give me (and anyone else who is clueless) instructions on how to use this with this switch tester and list what other components I'll need other than the switch tester and this PCB. Just a simple imgur step-by-step would be fantastic. Thankyou.

Feb 14, 2016

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mrodrigues

Feb 21, 2016

Any word on LED PCBs?

Feb 21, 2016

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mrodrigues

Jun 15, 2016

TwistingPatternsDid you ever get this to work? Would you be willing to upload pictures of your boards?

Jun 15, 2016

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mrodrigues

Jun 22, 2016

I realize you've likely moved on from this, but I just got my PCBs in the mail today and I wanted to post the list of components that appear to be necessary to build this board:
1x ATmega32U2 TQFP32 16x 1N4148 SMT Diodes 4x 0805 SMD resistors -R1&2 - 22 Ohms -R3 - 10k Ohms -R4 - Not connected (I think), see note 1x 16Mhz through-hole crystal 1x button switch 4x Capacitors SMD: -C1 - 10uF -C2 - 1uF -C3&4 - 20uF 2x 20pf 0805 SMD capacitors 1x Mini USB 5 pin female Jack Plug
Note: R4 is connects to pin PD7 on the ATmega Functions of this pin from the datasheet: -HWB/TO/INT7/CTS, Bit 7 HWB, Hardware Boot : The PD7 pin can serve as TO, Timer/Counter0 counter source. INT7, External Interrupt source 7: The PD7 pin can serve as an external interrupt source to the MCU. CTS, USART1 Transmitter Flow Control. This pin can control the transmitter infunction of its state.
Here's a picture of the board: https://i.imgur.com/9ZKQ9Mr.jpg?1

Jun 22, 2016

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