Author: steve45

Assemble STM with headers

4 pin header on the upper side
4 holes on the main pcb

When you got a delivery where the STM modules are already populated with headers like in the 1. picture, you still need to connect the 4 extra pins in order to get the STM flashed correctly. With the attached header (see arrow), that does not work.

So you either add 4 wires then need to be soldered on the pcb first and connect them to the header or you add an additional 4 pin header on the lower side of the STM module that then connects to the 4 holes on the main pcb.

Please also check out https://tiltaudio.com/2022/05/05/board-rev-3-10/

Docker image

To run the tiltaudio firmware locally (if you have docker installed), you can use https://hub.docker.com/r/sker65/tiltaudio .

It runs a demo build of the firmware similar to https://demo.tiltaudio.com. You can try the web ui and also play all sounds from a sound pack.

If you don’t have docker for windows go here: https://docs.docker.com/desktop/setup/install/windows-install/

For macOS I would recommend OrbStack: https://orbstack.dev/

Long time no update – new firmware

As I got serval requests for support of the Pi5 and also better support for Pi4 I updated the firmware image to the latest “Raspberry Pi OS” (by the time of writing 32-bit version from Nov/19/2024).

So this means I decided to go away from dietpi the distribution that was used so far. Even so dietpi claims a fast bootup time and better sd card lifecycle, this has not really proven in the past.

Boot up time

Boot up time is around 15 sec with Pi5 with the new image, all others (Pi3B, Pi3A, Zero 2) are at 24 sec, when using a “UHS Speed Class” card. Which is faster than before.

On image fits it all

Also Raspberry Pi Os runs on all supported hardware, dietpi has different versions for Pi5 and below.

Ram logging

To still prolong the sd lifecycle there is a new option enabled by default: logging to ram or main memory. This means logs are not persistent on the sd card, but only available while the system is running.

This means if you need to send my a log file, you either turn ram logging off, or you grab the log file via the web ui while the system is running.

Still beta, but please try

The latest image and firmware is still beta, so expect maybe a glitch here and there. I tested boot up on Zero 2, Pi3A, Pi3B, Pi4 and Pi5.

And Pi5 also “in the machine” so far all looks goods.

So please try it out and report feedback to me at steve@tiltaudio.com.

Download the beta here.

PS: today I fixed some bugs and further optimized startup time and sd card lifecycle:

– turned off swap
– disabled a couple of services
– bugfix for local AP not starting correctly

Security note

SSH is enabled by default and the initial user is not changed. So before putting the pi into a (public) nezwork please change the password of the user pi.