sudomod

Hi all,

I have nearly finished my build and wanted to add some tweaks, like putting the SD-Card into the Cartridge.
Im using the PRS-Tech Board plus GBA Cartridge reader plus flat ribbon SD-Card extension.

I have wired everything that pin 1 from the SD-Reader from the pi matches Pin 1 in the Cartridge.
All lines have "beep" when testing but it doesnt boot up.

I realized PRS-Tech board only have 7 contacts used but the SD-Card has 8.
How I can check if there is a signal arriving at the pi?

I will try to shorten the lines also but I want to make sure that the wiring is correct.
Pin 6 from the SD-Card goes to Pin 15 from the Reader but there is no contact at the PRS-Board.

Connection from SD-Card to Cartreader is:

1->5
2->3
3->1
4->13
5->7
6->15
7->9
8->11

Im kinda lost.
Thanks for any help!

Your wires may be too long.
Here is the wiring diagrem from prs http://prs-tech.com/Tutorials/Cart-Wiri ... iring.html

Start checking here

easier would have been to buy just a ribon extention cable (one that is long enough), you can find one cheap for arround 5 dollars on ebay

This is the correct wiring. It matches mine -- I used the same adapter in an SAIO build also with a PRS card reader.

THX for all the Infos.

Shorten the wires did the trick.
Now my first Build is finished and works flawless.

Only one thing is strange, after a while the Sound from the Speaker is gone, Headphones working fine though.

reipet wrote: ↑

Thu Apr 05, 2018 9:20 pm

THX for all the Infos.

Shorten the wires did the trick.
Now my first Build is finished and works flawless.

Only one thing is strange, after a while the Sound from the Speaker is gone, Headphones working fine though.

you might have a bad soldering somewhere on the audio line to the speaker. rework your solders and try to clean them for cold joints or bad joints

The sd card reader has eight pins because it has two ground pins you only need to use one ground pin

Credit to: wermy for the pictures and schematic