Singalong Kit Assembly

Thank you for purchasing the Singalong Kit to accompany the McRoboFace “emoticon”. This kit will

allow you to build the breadboard to work with Robin Newman’s project from this link

Note that we have used different components from the project shown in the link above, but the

circuit is the same and easier to assemble.

Step 1 – Check you Have All Components

• 400-point Breadboard

• 1m Audio lead (white)

• Audio splitter lead (black)

• Strip of 10 dupont cables, 30cm

• Red jumper wire

• Black jumper wire

• Audio cable to breadboard connector PCBA

• 12mm Tact switch

• 10K breadboard-friendly trim pot

• 10K resistor (Bands are Brown, Black, Orange)

• 2 x 47uF capacitors

Step 2 – Plug in the Audio Connector PCBA

Singalong Kit Assembly

1. Check you have the breadboard oriented correctly with row 1 at the left as shown in photo

2. Plug in the audio connector to d4, d5, d6 and f4, f5, f6

Step 3 – Make a 1cm Jumper Wire

• Cut a 24mm piece of Black wire

• Strip 7mm of each and bend over as shown above

• You will now have a 10mm insulated wire, with 7mm bare wire on each end

Step 4 – Connect Audio Ground to Breadboard

• Push the black jumper into hole j4 and the Ground strip as shown above

Singalong Kit Assembly

Step 5 – Form First Capacitor

• It is important to get the correct polarity for these capacitors. For this one, leave the

negative lead straight and bend the positive lead

• The positive lead should be 0.3” (8mm) from the negative lead

Step 6 – Plug in First Capacitor

• Plug negative into i5 and positive into i8

Singalong Kit Assembly

Step 7 – Form Second Capacitor

• So that the two capacitors fit together, we bend the negative lead on this one and leave the

positive lead straight

• The separation of the leads should be 0.2” (5mm)

Step 8 – Plug in Second Capacitor

• Plug negative into g6 and positive into g8

Singalong Kit Assembly

Step 9 – Fit 10K trimPot

• Orient the trimpot as shown and fit the centre pin into g13 (photo shows h13, but use g13)

• The other two legs fit in h12 and h14

Step 10 – Add Power and Ground Links to Trimpot

• Cut, strip and bend jumper wires as before

• Use Red wire for positive and make 0.1” (2.5mm) shorter

• Connect Red from Positive breadboard rail to hole j12

• Connect Black from Negative breadboard rail to hole j14

Singalong Kit Assembly

Step 11 – Form the 10K Resistor

• Cut and bend resistor leads as shown above

• Leads should be 0.5” (12.5mm) apart and 7mm long

Step 12 – Fit the Resistor

• Fit the resistor in holes f8 and f13

• It doesn’t matter which way round the resistor is fitted

Singalong Kit Assembly

Step 13 – Fit the Tact Switch and connect to Ground

• Take care not to bend the pins on the switch

• Push into holes d20, d22, g20, g22

• Cut, strip and bend another piece of black jumper wire

• Connect jumper from breadboard Ground rail to hole j22 (or i22 or h22)

Step 14 – Plug in McRoboFace

• Connect to holes a11, a12, a13, a14 as shown

Singalong Kit Assembly

Step 15 – Wire in McRoboFace

• Split the strip of 10 jumper wires as follows:

o Brown, Red, Orange

o Black, White, Grey

o Violet, Blue, Green

• You should have a single Yellow wire left (this is not needed)

• Using the Brown, Red and Orange wires, connect as shown above:

o Brown (Ground) to c14

o Orange (Din) to c12

o Red (Vcc) to c11

Singalong Kit Assembly

Step 16 – Wire in Audio Output and Switch Output

• Use the Green, Blue and Violet wires to connect the Audio:

o Green to breadboard Negative rail

o Blue to breadboard Positive rail

o Brown to hole j8

• For the switch, use the Black, White and Grey wires:

o Black to breadboard Negative rail

o White to breadboard Positive rail

o Grey to hole j20

• You will now have 3 sets of GVS (Ground, Volts, Signal) leads to connect:

o Brown, Red, Orange: connect to output to drive the McRoboFace

o Green, Blue, Violet: connect to analog input for reacting to the audio

o Black, White, Grey: connect to digital input for reading the state of the switch. Will

require an internal pullup resistor

• If using a Raspberry Pi with Picon Zero then connect as shown below

Now, please visit Robin Newman’s blog:

rbnrpi.wordpress.com/project-list/mcroboface-singalong-with-sonic-pi