ElectroSmash pedalSHIELD Manual

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How to Build pedalSHIELD
This is a 5 steps guide to build pedalSHIELD. With all the materials on hand it takes around 2 hours to
build it successfull .
Step 1 – Prepare the Materials.
You need a solder iron, lead and cutting pliers. Additionall
cutter, scissors and pliers are convenient.
The PCB has solder mask and plated holes, so it is ver eas to
solder with an 15-30W cheap solder iron.
Keep in short hand the PCB plan and the Bill of Materials:
pedalSHIELD Bill of Materials
Value Qty Refere ces
Capacitors
270p 5 C2 C5 C8 C9 C12
0.1u 6 C1 C4 C6 C7 C10 C11
1u 1 C13
4.7u 1 C3
10u 2 C14 C15
47uF 1 C18
Resistors
1K 2 R3 R21
4.7K 3 R5 R9 R10
50K 1 R7
100K 12 R4 R6 R8 R11 R12 R13 R14 R15 R16 R17 R19 R20
10M 2 R1 R2
500K 1 RV1
10K 3 RV2 RV3 RV4
Plastic Knobs 3 RV2, RV3, RV4
Others
1N5817 4 D1 D2 D3 D4
LED 1 D5
SWITCH_3PDT 1 SW1
SWITCH_INV 2 SW2 SW3
Co ectors
CONN_8pins 5 CONN2 CONN3 CONN4 CONN5 CONN6
JACKS 2 JI, J2
IC's
TL072 2 U1 U2
TC1044 1 U3
8PIN SOCKETS 3 U1, U2, U3
= =
= =
= =
= =
= =

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Step 2 – Solderi g Resistors a d Diodes.
There are 19 resistors and 4 diodes to be placed.
•2.a Solder the 100KΩ resistors (12 units)
•2.b Solder the 4.7KΩ res. (3 units) and the 10MΩ res. (2 units)
•2.c Solder the 15817 diodes (4 units), the 1KΩ res. (2 units) and the 50KΩ res. (1 unit)
tips:
- In the step 3.a pa attention to the diodes polarit , there is a line indicating the correct position. The
get hot ver fast when soldering, so tr to do it carefull and wait between each solder point.
- In order to solder the components, bend the leads, introduce
them in the footprint and once soldered cut the excess of lead as
short as possible to avoid short circuits.

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Step 3 – Solderi g the Capacitors.
There are 11 film/ceramic and 5 electrol tic caps.
•3.a Solder the 100nF capacitors (6 units)
•3.b Solder the 270pF capacitors (5 units)
•3.c Solder the electrol tic capacitors 4.7uF, 1uF, 10uF (2 units) and 47uF.
tips:
- Be careful with the electrol tic caps polarit , the negative lead (the short one) has to be placed in the
round hole. The positive hole is alwa s square-shaped and it is marked with a + s mbol.
- The Capacitors C16, C17 and the jumper JP1 are optionals and do not need to be mounted.

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Step 4 – Solderi g the Big Compo e ts.
The last components to be placed are the dip sockets (3), connectors (5), trimmer, potentiometers (3),
switches (2), jacks (2) and the footswitch:
•4.a Solder the 8pin sockets (3 units), the trimmer res. and the 8pins connectors (5 units)
•4.b Solder the potentiometers (3 units), switches (2 units), jacks (2 units) and footswitch.
When soldering the potentiometers and switches it would be good to check their positioning against the
plastic cover. The cover will fit better if the cover its aligned.
The LED D5 is the last component to be soldered. Place the plastic cover to size the length of the leads.
The short lead (cathode) goes to the flat side of the diode mark.
tips:
- Be careful soldering the big components perpendicularl because the tend to be slightl tilted.
- The 40 pin stripe has to be cut in 5 segments of 8 pins each.
You can use a cutter to carve a groove ever 8 pins and then
just bend it carefull to break it. One of the segments needs
to be cut like the side photo to avoid collision with the
output jack.

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Step 5 – Checki g Out the Job Do e.
After this 5 stages ou will have a mounted board exactl like the one shown below:
Double check our PCB with the model component b component.
Before power it up, check this 3 ticks:
1. Visual inspection of the PCB bottom, there is no short circuits or long ☑uncut leads.
2. The polarized components are placed correctl : diodes and electrol tic caps.☑
3. The ICs are not swapped or wrongl placed.☑
Finall the plastic cover can be installed together with
4 screws + nuts. Optionall a plastic spacer can be cut
to separate the boards and reduce the mechanic
stress.
The plastic knobs and the shaft+nut for the
footswitch are the last parts to be mounted.