Khadas Tone Board

[sq225917]

https://forum.khadas.com/t/connecting-a-raspberry-pi-3-model-b-to-the-khadas-tone-board/3368

 

[misterdog]

GPIO from Raspberry Pi provides an i2S signal, Khardas Tone board is designed for USB or Spidif input.
There is an i2S header on the board if you wish to hack. The KTB forum is full of people trying to get an i2S signal in.

 

[tomek]

Tone Board is NOT compatible with Pi gpio connector. Just use very short usb-c cable (30cm ?). USB in Pi 4 is much better, than in former Pi's and Pi4+TB is a wonderfulf sounding streamer. I advice piCoreplayer.

https://www.picoreplayer.org/main_news.shtml

 

[glenn jarrett]

• A 5V linear power supply connected to GPIO pins 1 and 21,
  
  
• Note that when an external power source is connected via pins 1 and 21, USB power input is automatically cut-off; however the USB-data-signal is still permitted
  

 

[glenn jarrett]

Not impressed with the tone board supplied usb cable
4 wires no shielding !
the tone board is a bit thirsty draws 390ma
now cut the usb down to 0.4m and re terminated A end
20200530_125659 by glenn jarrett, on Flickr
20200530_131543 by glenn jarrett, on Flickr

 

[tomek]

Yes, this cable is bad. I am just using a proper well made 30cm usb-c cable with golded contacts.

 

[misterdog]

USB certified, foil and braid shielding 0.5 M £ 5.75

http://rover.ebay.com/rover/1/710-5...0001&campid=5338728743&icep_item=183588740303

I would still prefer the data pair to be shielded separately as they are in HDMI cables.