Pluging an Adafruit touchscreen on a HifiBerry DAC+
I'm trying to connect a Adafruit PiTFT 2.8" TFT 320x240+ touchscreen and a HifiBerry DAC+ on a Raspberry Pi 2 B. Is it possible? Do I need to solder the touchscreen card on the DAC+?
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HiFiBerry team Hi,
you will find some users with the combination:
https://www.hifiberry.com/forums/search/adafruit/
It is not a plug- and play setup. If you want to align it to the board, you need to replace the original header - wich means desoldering the original header. Connection via cables is a bit easier. Note that soldering on the board voids warranty and we can't give support for this combination. However, if you want to try, other users here might help.
Best regards
Daniel -
traroth But aren't the holes meant for soldering another board or GPIO connector?
Honestly, there is not much to be found on the topic in the forum, except the "Woodware" thread...
Anyway, i posted the same question on the Raspberry Pi StackExchange. Maybe I get more info there... -
DCLXVI you can use the extra "holes" to connect your screen, like in the woodware topic. just solder a 40 pin or 26 pin header to the DAC+ and connect the piTFT with a ribbon cable to the secondairy header of the piTFT. (keep it as short as possible though the lenght affects SPI speed) but you can also desolder the header and solder on a stackable header. like I did here: https://www.hifiberry.com/forums/topic/desoldering/. its really easy to damage the board though when you desolder. I wouldnt recommend it really.
But, what really easy to do is, you can solder a 40 pin header right on top of the header of the DAC+. like I did to this AMP+:
note that pin 18 interfears with the DAC+. but there's a little trace on the back of the piTFT labeled "#18" you can cut it with something sharp and it will disconnect it from the header. there are solder pads beside it so you can easily re-connect it if you want later. -
HiFiBerry team Hi,
yes, you can add another line of headers onto the board. You just need to know that the additional add-on board will be shifted compared to the original position. If you need to mount it exactly in the original position, you need to replace the header or use cables as shown above.
Best regards
Daniel -
DCLXVI third idea I had to keep it aligned with a piTFT+ (new shape) is cut down the secondary header on the piftf a bit, then solder short wires for the pins you need from the secondary header of the DAC+ to the secondary header of the piTFT, and then stack the piTFT onto the DAC+ with spacers/standoffs not using the original header of the piTFT. (note that the pins of the secondary header of the piTFT+ are mirrored) -
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DCLXVI yes just install the DAC+ like described in the guides here. then just install the adafruit kernel. or vice versa. but if you plan to do a apt-get upgrade, do it before you install the piTFT drivers or they will be removed.
very interested in your final product! hope you'll post pics when its done! -
SynapSynth Is the information above still up to date? I am considering trying to add a HifiBerry to a PiTFT (480x320 version) setup and am trying to gauge the difficulty involved in doing so. External appearance is irrelevant and if possible I would like to avoid / minimize soldering - can I connect all the components with cables?
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hifi The latest model of AMP+ has long GPIO pins. You can connect one end of 40-pin (or 26-pin) cable to AMP+ and the other end to the PiTFT similar to what I did for my project:
http://support.hifiberry.com/hc/en-us/community/posts/201494692-Woodware
Just make the cable as short as possible to avoid slow refreshes in PiTFT.
In case of DAC+ and Digi+ I don't think you can avoid soldering if you need to connect PiTFT using cable.
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