Baby8 Assembly Guide

Click here to download
Thank you for purchasing Version 3 of our Baby8 Sequencer!

This is an advanced kit which should take 2 hours to assemble.

The Rakit baby8 sequencer kit is a simple 8 step sequencer with CV and Gate outputs and a clock input. The sequencer is not an instrument in itself, but a controller that can be used to control anything with a 0-5V tolerant CV input i.e. Drum Machines, VCO’s, APC’s and much more.

Each step has an associated CV potentiometer, led and switch. The CV potentiometers can be adjusted to emit anywhere between 0-5 Volts from the CV out jack when the step is active. The number of steps can be set between 1 and 8 using the step reset switches (right for reset, left for continue). Or switch to ‘Step Pause’ mode to turn the reset switches into optional pauses to create some funky rhythms! The step frequency can be adjusted by the frequency potentiometer and the gate duty adjusted between 20% and 80% with the gate duty potentiometer. The gate signal can be used as a rising edge to trigger effects/drum machines and often synthesizers use the gate duty as a source for note length.

WHATS INCLUDED IN YOUR KIT

There are a lot of small components included in the Baby8 Kit so please open the packaging carefully and check that all parts are present and correct using the parts list below before you start.

PCB 1
Stand-offs and nuts 4
500k Potentiometer 1
10k Potentiometers 9
10u Electrolytic Capacitor 2
4u7 Electrolytic Capacitor 1
100n Ceramic Capacitor 3
Blue LEDs 9
SPDT Switch (1 Mode Switch) 9
Mono Jack 3
1k0 Resistors 4
4k7 Resistors 2
10k Resistors 4
33k Resistors 2
47k Resistor 1
100k Resistors 3
200k Resistors 8
22k Resistors 2
CD4017 1
CD4093 1
LM324N 1
Battery Snap 1
1N4148 Diodes 9
78L05 5V Regulator 1

let's get started

YOU WILL NEED:

Soldering Iron (and solder)

Flush Cutters

Pliers (Optional but handy)

Insert the switch, optionally bend the legs outwards to hold the switch in place when you turn it over.

Carefully solder the pins of the switch, if adjustment or alignment of the switches is needed solder one pin at first, adjust until correct and then solder the remaining pins.

Repeat for the remaining switches

Trim leads carefully as close to the board as possible.

Not critical, but I think it looks tidy and leads to less errors.

 200k

Red-Black-Black-Orange-Brown

 100k

Brown-Black-Black-Orange-Brown

 47k

Yellow-Violet-Black-Red-Brown

 33k

Orange-Orange-Black-Red-Brown

 22k

Red-Red-Black-Red-Brown

 10k

Brown-Black-Black-Red-Brown

 4.7k

Yellow-Violet-Black-Brown-Brown

 1k

Brown-Black-Black-Brown-Brown

Resistor Colour Codes

Insert all 8 200k horizontally mounted resistors.

To help hold the resistors in place when turning the PCB over bend the legs as shown.

Solder and trim.

For the vertically mounted resistors bend one leg over as shown.

 

**Save one 10k resistor for final assembly steps**

Insert and bend to keep in place.

Solder and trim.

 

**Save one 10k resistor for final assembly steps**

Insert the 1N4148 diodes paying close attention to the silkscreen. The correct orientation is shown to the left, the black marking on the diode should line up with the extra line on the silkscreen and the square pad.

All diodes inserted.

Place the 3 100n ceramic capacitors, they are non polarised so can be fit either way around. 

Insert the polarised capacitor with the negative side, towards the filled half of the silkscreen circle.

The negative side is indicated by the white stripe down one side of the capacitor and the short leg.

The positive side is the longer leg and should be located in the square pad of the PCB.

All 3 in.

Insert the 78L05 IC, matching the silkscreen below.

Insert the IC’s matching the orientation shown.

Leftmost IC LM324N

Middle IC CD4093 (Mislabelled as 4011 on PCB)

Rightmost IC CD4017

Insert LEDs as shown, long leg indicates positive terminal (anode) and the short leg indicates the negative (cathode).

Page

1 2