Author: steve45

Better Wifi Setup

If wifi is not configured in the beginning and TILT!Audio cannot get an IP address it creates it own Wifi hotspot named „TILTAUDIO“. As soon as you see this wifi network appearing on your computer just connect by using the passphrase „tiltaudio“.

Then open the web ui in your browser on http://192.168.42.1:31008/

If you want to include the TILT!Audio system in your home wifi navigate to „Wifi“. Choose your wifi network and enter your passphrase, press „Setup Wifi“ and finally Reboot.

This will reboot the TILT!Audio system and after it is up again, you should reach the web ui by simply http://tiltaudio:31008/ . If this doesn’t work you need to find out the ip address by checking your router for a new device.

10 Band Equalizer

There are a couple of new synthetic audio devices, that add some signal processing before hand over sound to the hifi DAC. One of them is a 1 band equalizer, that allows fine tuning your sound output for TILT!Audio.

You can listen to every sound from your sound set or choose one of the test sounds and then fine tune the sound exactly for your system.

The equalizer is a global fine tuning, that applies the same „curve“ to all sounds from TILT!Audio. Of course it is still possible to add a per sound increase or decrease of volume.

Bugfixes / Changes:

• Bugfix when loading altsound sound packs
• Change default to enable_i2s to true so it matches all newer shields.
• Added option to reboot from web ui as part of wifi setup
• Rename low level service to “tiltaudio”. When ssh to pi use “sudo systemctl start/stop tiltaudio” …
• Changes storage for “tmp settings” like sound set, volume and audio device to ta.ini file
• Start web UI even without sound.
• Bugfix: switch rotary support off, when i2s is on

See how easy it is to replace the old sound board from a WPC machine and replace it with a TILT!Audio board.

What I did already before:

• Assemble and soldering the board itself
• Replace the old speaker wiring in wpc machine with one dedicated wire pair to each speaker
• Prepared the sd card for the pi. (load image, write to card & apply latest update)

While all flaws from the former version 2.5a (blue) were fixed, I unfortunately introduced two new flaws:

Most important the 6 smoothing capacitors have no ground, which makes the sound humming if not fixed. Fix is easy, just remove small piece of the solder mask and create a connection to grounding surface around:

With the new OLED display there’s also a serious problem: Vcc (1) and GND (2) are interchanged. So please don’t connect it directly but use some kind of “adapter”.

For WPC the green board comes with an alternative power supply for the amplifiers: a adjustable DCDC step down regulator. Its easier to install and cheaper, but it needs to be adjusted in order not to overload the amplifiers. So please adjust output voltage to 12-15 V with the blue spindle pot.

The DCDC step down converter is an alternative to the linear regulator 72S15. Its an either or but not both installation. I reserve to deliver either one or the other depending on availability.

General advice with 3.96” connectors: remove the key pin before soldering! Take a pliers and pull it out. Newer boards have the key pin marked on pcb printing. For olders you need to check the original connector.