Assembling the Digital Control Board

Let's start by soldering the component's on the bottom of the Digital Control board. The top of this board can be identified by the Infinity Shred spaceship logo on the right side.

 

Step one

Let’s start by placing the resistors needed on the bottom side of the digital control board. For this step you will need the following resistors…

•Resistor 220 for R18 and R19

•Resistor 10k for R1 and R14

•Resistor 2.2K for R15 and R16

Step two

Now let’s place the capacitors for the same side of the board. You will need the following…

•Ceramic Capacitor 18p for C6 and C7

•Ceramic Capacitor 100n C1, C4, C5, C8, C9 and C10

Step three

Let’s place the appropriate Diode on D1. Please note Diodes are polarized so be mindful of the direction you place it. The black ring of the diode should point towards the MIDI connectors. For this step you will need…

•Diode 1N 4148

Step four

Let’s place the 5K Trim Pot and the 20Mhz Quartz Crystal. Place the trim pot with the screw facing outwards to make it easier to access. For this step you will need…

•Trim Pot 5K for R21

•Quartz 20Mhz for Q1

Step five

Now place the 40 pin socket, two 8 pin sockets, and the MIDI connectors. Make sure that the notch on the sockets matches the screen print on the board. For this step you will need…

•Socket 40 pin for IC1

•Socket 8 pin for IC4 and OK1

•MIDI Connectors from bag labeled “Audio, MIDI, Power” for J2 and J3

Later on we will be placing components on the other side of this board. While you should trim all of your leads throughout this project, it is particularly important to carefully trim all leads from this step as much as possible to allow room for the parts that will later sit on top of this area.

Step five pt 2

Let’s slot the ICs for this side of the board. Make sure the notches on the chips are aligned with the notches on the sockets (which should be aligned with the silk screen on the PCB!) For this step you will need…

•IC 6N137 for OK1

•IC ATMEGA644 for IC1

•IC 24LC512 for IC4

You're now done placing components on this side of the board.

Step six

Flip the board to the top side with the Infinity Shred logo. For this step you will need…

•Resistor 220 for the 8 spaces labeled “220” found below “Edit 2”

•Ceramic Capacitor 100n for C2 and C3

PLEASE NOTE: This kit comes with white LEDs. If you are sensitive to bright lights we suggest replacing the 220 resistors in this step with 1K resistors to dim them OR using red or green LEDs instead of the white when it comes time to place those

Step seven

We’ll now place two more sockets and a resistor array. For the sockets make sure the notches match the screen print. For the resistor network make sure the white arrow is oriented closest to the RN1 text on the board. For this step you will need…

•Resistor Network 10k for RN1

•Socket 16pin for IC2 and IC3

Step eight

LEDs! LEDs are polarized- the short lead is your (-) and your long lead is your (+) Make sure to place all of them according to the markings on the board - the long lead (+) will be facing towards the top of the board. For this step you will need…

•LEDs for LED1, LED2, LED3, LED4, LED5, LED6, LED7 and LED8

Step nine

Let’s add the controls. For this step you will need…

•Pots for Edit 1, Edit 2, Edit 3, Edit 4

•Encoder for Encoder

•Buttons (leave the black plastic rectangles in the bag for now) for S1, S2, S3, S4, S5 and S6

Step ten

Let’s slot the ICs for this side of the board. Make sure the notches on the chips are aligned with the notches on the sockets (which should be aligned with the silk screen on the PCB!) For this step you will need…

•IC 74HC595 for IC3

•IC 74LS165 for IC2

Step eleven

Now that everything else is placed we can solder in our LCD. Begin by soldering the header to the screen, then solder the LCD to the board.

Step twelve

Finally let’s add the long 8-pin header from the bag labeled “Headers.” Place this header so that the plastic piece is on the top side of the board. When you are done soldering this remember to trim the leaders that stick up on the same side as the screen and pots!

You're now done assembling the Digital Control Board!

This guide was first published on Oct 12, 2016. It was last updated on Oct 12, 2016. This page (Assembling the Digital Control Board) was last updated on Nov 02, 2019.