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seqv4plus_enc-plate

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SEQv4+ ENC-PLATE

Eight encoders with switch functions connect to the SRIO chain on the le MEC board below. The PCB also holds Matias switches.

Note that two sets are required for a SEQv4+ build.

Schematic

The encoders are directly connected through the headers to DIN pins in the stacked PCB. The switches are connected to the matrix through diodes.

Part DIN SR DIN pins/column Cathode row
EN1 1 0,1
EN2 1 2,3
EN3 1 4,5
EN4 1 6,7
EN5 3 0,1
EN6 3 2,3
EN7 3 4,5
EN8 3 6,7
SW1 2 D0 C0
SW2 2 D1 C0
SW3 2 D2 C0
SW4 2 D3 C0
SW5 2 D4 C1
SW6 2 D5 C1
SW7 2 D6 C1
SW8 2 D7 C1

BOM v1.0 placeholder

Type Qty Value Package PartsMouserReicheltConradOtherNotes
Resistors
6 100-220R 5% THT R1-6
Resistor network
1 10k SOM16 RN1 4816P-T02-103LF
Capacitors
3 100n 1206 C1-3
Diodes
19 1N4148 THT
LEDs
18 various 3mm insert into switches
ICs
1 74HC165SOIC16 IC2 595-SN74HC165DR
2 74HC595SOIC16 IC1, IC3
Encoder
1 STEC12 STEC12E08
Switches
18 MEC/APEM 3FTH9 SW1-18 642-3FTH9 TASTER 3FTH9 705276 - 62
Headers
1 1*3 male
2 2*5 male
Hardware
6 M3 spacer TBD
1 datawheel DK-38?
18 switchcaps 22.5mm 642-1S11-22.5 1S11-22.5

Versions

v1.0: first release.

Assembly

Start with the SMT parts (caps, ICs and RN), then the resistors and diodes with correct polarity. Headers, switches (read below first!), encoder, caps and knobs.

Important: insert the LEDs into the switches before soldering them! It's quite hard to bend the legs once the switches are in place. The LED legs should not interfere with the switch action; i.e. the button should be pressed and released without getting caught on the legs.

Ensure that when the switch is soldered in, the LED is correctly polarised. Round part (anode) of the LED to the circled pin; flat part (cathode) to the line:


License

Currently the design is © 2017 antilog devices with all rights reserved; all documentation is CC BY-NC-SA 3.0.

seqv4plus_enc-plate.1505197183.txt.gz · Last modified: 2017/09/12 06:19 by latigid_on