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by kenzo
Wed Apr 16, 2014 9:01 am
Forum: Gaming
Topic: MCP23017 input expansion
Replies: 3
Views: 1941

Re: MCP23017 input expansion

Be careful when cabling wires ! Do not connect to 5V power supply coming from Raspberry

these are some pictures of my work
circuit.jpg
Circuit
circuit.jpg (44.69 KiB) Viewed 1858 times
circuit-assembled.jpg
Circuit assembled
circuit-assembled.jpg (59.85 KiB) Viewed 1858 times
working-cabinet.JPG
Working cabinet
working-cabinet.JPG (47.49 KiB) Viewed 1858 times
by kenzo
Wed Apr 16, 2014 8:31 am
Forum: Gaming
Topic: MCP23017 input expansion
Replies: 3
Views: 1941

Re: MCP23017 input expansion

arcade_controls_min.zip
This is the Fritzing file I used for the circuit etching
(23.91 KiB) Downloaded 138 times
by kenzo
Tue Apr 15, 2014 9:46 am
Forum: Gaming
Topic: MCP23017 input expansion
Replies: 3
Views: 1941

MCP23017 input expansion

Hi All, I created a driver based on Adafruit Retrogame which can expand Raspberry GPIO. Thus you can buid your own arcade station with 2 players using 6 (or more) buttons per player. Hope you enjoy it ! See ya https://github.com/vdownemail/Adafruit-Retrogame I also attached circuit schematic in orde...
by kenzo
Sun Mar 09, 2014 4:25 pm
Forum: Gaming
Topic: Universal GPIO keyboard daemon
Replies: 148
Views: 73385

Re: Universal GPIO keyboard daemon

Hi mmoller, I visited your website and I saw the schematic ( https://github.com/mmoller2k/pikeyd/blob/master/wiring.png ). According to this schematic you are ORing the interrupts coming from MCP23017 and putting the signals directly into Raspy using a power source of 5V. This interrupt signal could...

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