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You can also add some solder to the edge of the PCB where the copper tape sticks to the pencil 
to reinforce the copper tape.  

Note: If this turns out to be too difficult, use the included piece of purple wire instead.
Strip both ends and solder one end the the pcb. 
The other (longer) end should be wrapped around the thumb-tac.

Next, get the other piece of copper tape. Stick the tape to the other end of the PCB and wrap it 
towards the point of the pencil.
Also use some solder to fortify the connection to the PCB and the edges of the tape.

Содержание Drawdio

Страница 1: ...er pitches making music 1 Resistors Start with sorting the resistors R1 300K brown orange black black orange R2 10K small blue resistor R3 10R brown black black gold brown R4 22M red red blue gold this is the unmarked light brown resistor Bend the resistor legs at 90 degrees on both sides and insert them in the right locations Solder 2 Small Capacitors Insert the capacitors in place C1 100nF C2 68...

Страница 2: ...lightly push down on the IC and reheat the soldered pin It should click flat to the PCB now Now solder the rest of the pins 4 Transistor Insert the PN2907 transistor in the Q1 location Notice that the transistor has one flat side This should match the drawing on the PCB Bend the transistor flat to the PCB and solder the pins 5 Capacitors Now insert the 100uF capacitor The longer leg should go in t...

Страница 3: ...Lay the speaker upside down on the table and add some solder to the four pads Now place the speaker on the PCB and carefully reheat the pads They should flow together Note if you have trouble with this look at the end of this document for another solution ...

Страница 4: ...Do so Snip off the pins This might be hard as the are thick so be careful 8 Pencil Use the small tiewrap to attach the pencil synth to the pencil Slip it in between the transistor and the large capacitor 9 Copper tape Take one piece of the copper tape Peel off the start of the paper but not entirely Be careful with this tape as it is quite fragile Stick one end on the silver end near the speaker S...

Страница 5: ...lt use the included piece of purple wire instead Strip both ends and solder one end the the pcb The other longer end should be wrapped around the thumb tac Next get the other piece of copper tape Stick the tape to the other end of the PCB and wrap it towards the point of the pencil Also use some solder to fortify the connection to the PCB and the edges of the tape ...

Страница 6: ...awing You should hear higher and lower pitches of that beep tone wet fingers skin contact experiment Alternative Speaker connection Take two very short pieces of wire and strip both ends Twist the ends Solder the wires to the two speaker pads on the left and right side of the speaker Connect them to the SPK and SPK holes on the PCB and solder them into place Note that it does not matter which wire...

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