If you have a 3D printer go ahead and print it, but please don't go out of your way to print this flawed case if you dont and just use some kind of project box. In the future a new housing may be added. Modifications are needed to fit bolts, the openings for the leds are not optimal, the arduino is exposed and a part needs to be cut out for the USB to fit. I do provide a housing in this project, but it is at this moment flawed. Even for SMD on a PCB "advanced" soldering skills are equired. I would also not recommend to use wires on SMD packages unless you are Very confident in your soldering skills. Unfortunately the leds used are not available in trough hole packages. Not much to explain about them in this chapter, but if you dont use the PCB I would recomend just normal trough hole components for soldering ease. If you choose to use the PCB you'll need Kailh BOX switches. I used the Kailh switches because they were cheap on Ailexpress. Linear, tactile or clicky from Kailh or Cherry MX. There are many mechanical switches you can use. Those boards use an external chip to make USB communication possible whereas the Arduino pro micro (Atmega32U4) has it built in. Yes you can program them over USB very easily and I think there are workarounds, but I like to keep it simple when it comes to USB communication and I don't know if the workarounds are as responsive. Most arduino boards like the Uno (Atmega328) don't have native support for USB communication. If you have the time and want to save mony, order form aliexpress and don't order the PCB.ġ Printed circuit board (PCB) provided in this projectġ 3D printed case provided in this project It currently doesn't have led functionality but it should be the best performing one.ĭepending on how you make your project you may need different components, but these components are te ones I used. I'll leave all code online but I recommend you use the last version. Note 2: I have updated the code multiple times and im up to version 3ish now. maybe an easy to solder version will be added but these leds don't come in trough hole package Note 1: SMD components (small electronics) are used so if you replicate this project soldering skills are required. If you can handle it I would encourege you to customize your project. Some components are chosen almost purely because i had them lying around. If you want to replicate this project exactly to the last instruction then be my guest, but some of the desicions I made are not based on lowest price or best quality. Not long after that I decided it would be a good idea to put it on instructables as my first project. I recently started playing a rhythm game called osu! and after seeing a video of a commercial mini keyboard I thought it would be a fun project to design one myself.
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