Audio Adapter
The Audio Adapter is a discrete PCB that connects to the main board by a flex PCB cable. It includes the ability to take analog audio in and out of the board.
Historically, we originally had the Audio Headphone connector on the board itself. But one of the main challenges of manufacturing has been that the module on the bottom of the board doesn't really allow for any through-hole components to be used. Having evaluated lots of options and board space area, we determined that we really couldn't find a good quality connector that we could fit on the top board that we're proud of. So given that this was a Kickstarter, we decided to just swallow our pride and built a small Audio Adapter.
That Audio Adapter can go either at the front or at the back of the board. It is highly configurable. It can even go outside of the box if you so want it. It supports a built-in microphone with a switch. The alternative is a headphone port which supports a three-pin headphone adapter with either a microphone and a headphone active, or if the switch is set, a built-in microphone and then external headphones.
The audio board uses ELSA under the hood. It can be configured to record and play audio in the usual ways inside the device. Note that if the audio board isn't connected, the main system won't determine that headphones are plugged in and probably won't switch the routing. But if you force the audio out of it, nothing bad will happen—you'll just not get any egressed audio.
| Label | Description |
|---|---|
| 1 | Headphone/microphone connector (3.5mm) |
| 2 | Connection to Tachyon |
| 3 | Microphone selector |
| 4 | Internal microphone |
The headphone connector can also be used with amplified speakers.
Audio Board On Tachyon
