1.4 KiB
title, date, draft, summary, images
| title | date | draft | summary | images | ||
|---|---|---|---|---|---|---|
| Big shiny arcade buttons | 2019-11-05T08:20:43+01:00 | true | Adding buttons to my "smart desk" |
|
Last [post]({{< ref "/posts/desk-automation.md" >}}) i teased the next upgrade of my smart desk project which are some big arcade buttons to control the light even when my network is down. Well...
I finished that part over the last few days:
{{< figure src="/img/buttons-aus.jpg">}}
The buttons i did choose for the desk are thous big arcade buttons1 as they produce this satisfying click when pressed. They come with an integrated LED and resistor, but -as they are not supposed to be driven by a 3.3 volt microcontroller- they need 12 volt supplied to be fully lit up. For the controller i use a normal USB power supply so i tried to power the LEDs with 5 volts. That made them bright enough so i went with that... To up the 3.3V logic level from the GPIOs of the controller to 5V i just used a normal 2N2222 NPN-Transistor2. Soldered together the switches + transistor + some cables the "thing" looks something like this: {{< figure src="/img/buttons-switches.jpg">}}