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Component Layout

With around two dozen total components its hard to go wrong.  The chorder can be built on perfboard, stripboard, wirewrap or your can etch a pcb board.  If you create a layout, please send it to us, your layout may be just what someone else needs to help them build their board!  Please be sure to clearly state how you want to be listed when we post it.  From Name and email address (obfuscated by the wiki) to total anonymity, we will do our best to accommodate your request.

Here is a layout for a Seven key chorder with no LEDs or ISP. This is what Greg uses. The layout is for perfboard and wire but could be adapted to other methods.

click or select to enlarge

The layout below uses two 28 pin DIP wirewrap sockets, one for the IC, the components are all soldered into the other socket. Then the sockets are connected using wirewrap. In practice all ground lines are brought togther and solderd to the ground line of the USB cable and all VCC lines are brought together and soldered to the VCC line of the USB cable. In like fashion, the lines for the keyswitches are brought out to and soldered to one side of each of the switches and a ground line is run to the other.

click or select to enlarge

28 pin dip for use as
component socket
pincomponentpin
1 X1 28
2 27
3 C1 26
4 C2 25
5 24
6 C5 23
7 R4 22
8 D2 21
9 R3 20
10 D1 19
11 R2 18
12 R1 17
13 C3 16
14 C4 15

Warning I have not yet wired up the wirewrap board, once I have (and as such confirmed that the wire chart bellow is correct) I will remove this warning -Greg

wired components tested
[ ] CS-1 CS-4 [ ]
[ ] CS-5 CS-23 [ ]
[ ] CS-6 VCC [ ]
[ ] CS-8 GND [ ]
[ ] CS-10 GND [ ]
[ ] CS-11 GND [ ]
[ ] CS-12 VCC [ ]
[ ] CS-13 CS-14 [ ]
[ ] CS-14 VCC [ ]
[ ] CS-15 GND [ ]
[ ] CS-16 CS-15 [ ]
[ ] CS-18 CS-17 [ ]
[ ] CS-18 USB-2 [ ]
[ ] CS-19 CS-18 [ ]
[ ] CS-20 CS-19 [ ]
[ ] CS-21 USB-3 [ ]
[ ] CS-22 CS-21 [ ]
[ ] CS-23 GND [ ]
[ ] CS-25 GND [ ]
[ ] CS-26 GND [ ]
[ ] CS-28 CS-3 [ ]
[ ] IC-2 CS-9 [ ]
[ ] IC-4 CS-7 [ ]
[ ] IC-7 CS-6 [ ]
[ ] IC-8 CS-5 [ ]
[ ] IC-9 CS-1 [ ]
[ ] IC-10 CS-28 [ ]
[ ] IC-12 SW-7 [ ]
[ ] IC-14 SW-1 [ ]
[ ] IC-15 SW-2 [ ]
[ ] IC-16 SW-3 [ ]
[ ] IC-17 SW-4 [ ]
[ ] IC-18 SW-5 [ ]
[ ] IC-19 SW-6 [ ]
[ ] SW-1-7(GND) GND [ ]
[ ] USB-1 VCC [ ]
[ ] USB-4 GND [ ]
spiffchorder/sample_layout.1211341768.txt.gz · Last modified: 2008/05/20 23:49 by priestdo
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