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8. LED mounting

Placing the LEDs requires a specific orientation due to their polarity. The long

legs are the positive side and they all go into the left holes of the PCBs.

Place all the LEDs and the 7 segment display through the PCB. Be aware of

LED colors and the orientation of the display (the dot is on the bottom line).

Assemble the PCBs & front panel with some nuts: one on the Clock input, one

on Out 4 and one on the Length potentiometer. Once everything is well

secured, it’s time to adjust the two small M3 nuts you’ve screwed on (...)

JP3R

BLI1

SHIFT

IC2

LENGTH

TRIM

RSTIN

RN3

RN2

IC4

LED1

RNDMTL

TABLE

IC3

JP8L

JP8R

JP3L

IC1 REF-5

JP1

FILL

OUT1

OUT2

OUT3

OUT4

CVTABLE

CVLENGTH

CVSHIFT

RECORD

FUNCTION

ERASE

PAD

QUANTIZE

IC1

LED POLARITY!

Green LEDs (

x4)

White LED (

)

Amber LEDs (

x9)

Red LED (

)

7 segments display

Potentiometer nuts (x1) P1

Jack nuts (x2)

M3 nut (x2)

Summary of Contents for Four Bricks Rook

Page 1: ...Shakmat FourBricksRook BuildingGuide 16HP Eurorack Module Built designed in Belgium www shakmat com ...

Page 2: ...ck 5 1 1 Power header 5 2 Back 5 2 1 Diodes 5 2 2 Electrolytic capacitors 5 2 3 78L05 5 2 4 1 5 kΩ resistor 5 2 5 5 6 kΩ resistor 5 2 6 33 kΩ resistors 5 2 7 1 2 kΩ resistors 5 2 8 Push buttons PCB stacking Front panel preparation LEDs mounting Nuts mounting Potentiometers buttons caps Powering basic testing 2 3 4 5 5 5 5 6 7 7 7 8 8 8 8 8 9 9 10 10 11 11 12 13 14 15 16 17 18 18 19 1 2 3 4 5 6 7 8...

Page 3: ... bly process in the most practical and comprehensive way If by any chance there is a missing damaged part in your kit or if you have any suggestion feel free to contact us via shakmat com The assembly process will be dramatically simplified if you follow the order defined by this building guide We tested various orders of steps before finding the most convenient and the one presented here is the b...

Page 4: ...er 9x Jack connectors 9x Jack connector nuts 1x 7 segment display Pack 2 4x 5 5 kΩ 1 resistors 1x 1 2 kΩ 1 resistor 11x 1N4148 diodes 1x 78L05 regulator 1x WhiteLED 9x Amber LEDs 9x Push buttons 4x M3 screws 4x M3 nuts 5x Round push buttons caps 4x Square push buttons caps 2 Component list necessary tools Pack 3 1x Top PCB 1x Bottom PCB Loose parts 3x Black rubber knobs 1x Power cable 1x User manu...

Page 5: ...ck RECORD FUNCTION ERASE PAD1 PAD2 PAD3 PAD4 QUANTIZE AB IC1 JP1 SHAKMAT MODULAR FOUR BRICKS ROOK v1 1 JP3R BLI1 SHIFT IC2 LENGTH TRIM D4 RSTIN RN3 RN2 IC4 LED1 RNDMTL LF ST LP TABLE IC3 JP8L JP8R JP3L IC1 REF 5 JP1 FILL OUT1 OUT2 OUT3 OUT4 CVTABLE CVLENGTH CVSHIFT D5 D6 US2 ...

Page 6: ...ck is not perfectly perpendicular with the PCB you can reheat the pads and push it until it is with your thumb JP3R BLI1 SHIFT IC2 LENGTH TRIM D4 RSTIN RN3 RN2 IC4 LED1 RNDMTL LF ST LP TABLE IC3 JP8L JP8R JP3L IC1 REF 5 JP1 FILL OUT1 OUT2 OUT3 OUT4 CVTABLE CVLENGTH CVSHIFT D5 D6 4 1 Front 4 1 1 Jack connectors x10 P1 Place the mini potentiometer To ensure a perfect alignment of the potentiometer w...

Page 7: ...Mount the front panel and tighten the 3 potentiometer nuts this will ensure a proper placement of the pots and then solder them Now verify that the mini potentiome ter from the previous step is well placed thrugh its front panel hole It must move freely without touching the panel If necessary you can reheat the only pin you have solde red to adjust the pot placement Once the placement is OK you ca...

Page 8: ... to until its flat on the board Release the soldering iron but keep pressing Avoid touching the pins themselves because they will become hot very quickly and move out of alignment within their plastic bracket Once you are satisfied with you placement solder the remaining pin 4 2 Back 4 2 1 Male headers 1x3 pin x2 P1 US2 We will solder these two headers one by one Place them with the short pin side...

Page 9: ...this can lead to shorts with the aluminium front panel 5 2 Front 5 2 1 1N4148 Diodes x11 P2 RECORD FUNCTION ERASE PAD1 PAD2 PAD3 PAD4 QUANTIZE AB IC1 JP1 SHAKMAT MODULAR FOUR BRICKS ROOK v1 1 5 Bottom PCB assembly Place the power header short pin side in the hole and solder only one of the pins Check the alignment and correct with the same method as for a single row header Then once your component...

Page 10: ...ntation the flat round contour of the component have to match the contour of the PCB silkscreen 5 2 3 78L05 P2 RECORD FUNCTION ERASE PAD1 PAD2 PAD3 PAD4 QUANTIZE AB IC1 Solder the three 33µF capacitors You must pay attention to the orientation of these components The long leg is indicating the posi tive side therefore it has to match the sign on the PCB silkscreen 5 2 2 Electrolytic capacitors x3 ...

Page 11: ...to observe on resistors 5 2 5 5 6 kΩ 1 resistor P2 RECORD FUNCTION ERASE PAD1 PAD2 PAD3 PAD4 QUANTIZE AB IC1 Solder the 1k5Ω resistor There s no orientation to observe on resistors Be careful not to bend the leg too far from the resistor s body as this can lead to shorts with the aluminium front panel 5 2 4 1 5 kΩ 1 resistor P1 ...

Page 12: ... IC1 Solder the four 1k2Ω resistors There s no orientation to observe on resistors 5 2 7 1 2 kΩ 1 resistor x4 P2 RECORD FUNCTION ERASE PAD1 PAD2 PAD3 PAD4 QUANTIZE AB IC1 Solder the four 33kΩ resistors There s no orientation to observe on resistors 5 2 6 33 kΩ 5 resistor x4 P1 ...

Page 13: ... need to be upright and pushed well against the PCB An imprecise mounting will result in a cap scrapping against the front panel We recommend you to place the buttons then flip the PCB holding the button in place with a piece of cardboard and press it against a table 5 2 8 Push buttons x9 P2 ...

Page 14: ...on your way to the end of this build The first step is to assemble the two PCBs as shown above and only solder the first pin of the small vertical header It is vey important that you firmly hold the two PCBs against each other while soldering this point There must be no gap between the PCBs and the header s black plastic part between them Once you ve soldered the first point and it s perfect you c...

Page 15: ...special flat top models intended to be mounted flush with the front panel The masking tape will help you to do this neatly You also need to screw a small M3 nut on each of the two studs of the back of the front panel You can screw them almost until the end of the thread In addition to these two other nuts added later will assure the stability alignment of the PCB s bottom half M3 nut x2 P2 ...

Page 16: ...panel with some nuts one on the Clock input one on Out 4 and one on the Length potentiometer Once everything is well secured it s time to adjust the two small M3 nuts you ve screwed on JP3R BLI1 SHIFT IC2 LENGTH TRIM D4 RSTIN RN3 RN2 IC4 LED1 RNDMTL LF ST LP TABLE IC3 JP8L JP8R JP3L IC1 REF 5 JP1 FILL OUT1 OUT2 OUT3 OUT4 CVTABLE CVLENGTH CVSHIFT D5 D6 RECORD FUNCTION ERASE PAD1 PAD2 PAD3 PAD4 QUAN...

Page 17: ...bottom PCB in place View of the left stud securing the bottom PCB to the front panel with the two nuts correctly mounted in place Now push every LED through their holes until they sit flush with the panel and stick to the tape Once they are all in place you can solder them and trim their legs Finally solder only one leg of the 7 segments display and check that it sits well against the front panel ...

Page 18: ...ace so that the PCBs are well held To ensure that these M3 nuts don t become loose over time and fall inside your case potentially causing electrical damages we recommand you to put a little dab of loctite or nail varnish over them Potentiometer nuts x3 P1 Jack nuts x10 P1 JP3R BLI1 SHIFT IC2 LENGTH TRIM D4 RSTIN RN3 RN2 IC4 LED1 RNDMTL LF ST LP TABLE IC3 JP8L JP8R JP3L IC1 REF 5 JP1 FILL OUT1 OUT...

Page 19: ... the three knobs onto the potentiometers Small button caps x5 P2 Big button caps x4 P2 Pot knobs x3 LP Plug in the power cable and make sure the red side of the ribbon matches the 12V on the PCB Now let s plug the module in your system and test it When powering up for the first time the module will launch a first start up routine that lasts a few seconds During this routine a green LED flashes Aft...

Page 20: ...y of the LEDs and diodes You can also check all the buttons resistors and LEDs solder points Go to PTRN mode play with the four pads and make sure that all the green Status LEDs are working Send a clock signal to the Clock input and the LEDs should start blinking Turn the table potentiometer fully clockwise position 8 all the LEDs should blink Play with the Length and Shift potentiometer the green...

Page 21: ...www shakmat com ...

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