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Thunderclap Kit Instructions V2
Page 1 of 11
Version
These instructions are for Version 2 of the Thunderclap PCB (printed circuit board). You can tell which version of the
PCB you have by looking in the lower right hand corner of the PCB. If you need the Version 1 instructions, you can
download them here:
http://delptronics.com/documents/ThunderclapKitInstructions.pdf
Version 1
Version 2
Important Information
Thank you for your purchase of the Delptronics Thunderclap Kit!
Before you start, please read the Electronic Kit Soldering Tutorial. It contains important and useful information even
for experienced kit builders. If this is your first electronic kit, the best piece of advice we can give is to take your time
and be careful to put the right part in the right place. The tutorial can be downloaded here:
http://delptronics.com/documents/SolderingTutorial.pdf
In the instructions that follow, each part type is followed by the PCB outline for that part. Refer to the enclosed
photograph of the completed kit for assistance with part identification and placement.
The PCB is marked with the refdes (reference designator) of each part, not its value. For example R1 refers to
resistor number one and C1 refers to capacitor number one. Once the part value is identified, it is easy to find the
refdes on the PCB.
Some parts must be oriented in a particular way, that is, the correct lead goes in the appropriate hole in the PCB. For
example, electrolytic capacitors are polarized (they have a positive lead and a negative lead). Ceramic capacitors
are not polarized, so it does not matter which of the two leads goes in which of the two holes. In these instructions,
the symbol (±) highlights parts that must be inserted with a particular orientation.
When you are ready to begin, separate the parts by type. Then, when you are ready to solder parts of a particular
type, separate them by value. Compare your parts to the bill of materials, which can be found on the last page of this
document. Make sure no parts are missing. These instructions list the parts in the recommended order of assembly.
In general, the order is shortest to tallest.
This manual is separated into two sections: board-mounted parts, which are soldered directly to the PCB, and off-
board parts which are connected to the PCB via wires.

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Summary of Contents for Delptronics Thunderclap Kit

  • Page 1 Version 2 Important Information Thank you for your purchase of the Delptronics Thunderclap Kit! Before you start, please read the Electronic Kit Soldering Tutorial. It contains important and useful information even for experienced kit builders. If this is your first electronic kit, the best piece of advice we can give is to take your time and be careful to put the right part in the right place.
  • Page 2 Thunderclap Kit Instructions V2 Page 2 of 11 Board-mounted Parts All of the board-mounted parts are supplied in a little plastic bag to keep them together. Refer to the diagram below when assembling the printed circuit board. The numbers along the top and bottom of the diagram are the part values.
  • Page 3 Thunderclap Kit Instructions V2 Page 3 of 11 Schottky Diode (±) There are 8 diodes, but D1 is different. D1 is a Schottky diode and has “BAT85” printed on it in very small type. An easier way to tell D1 apart is that D1 is loose, while the other seven diodes are connected together on a piece of tape.
  • Page 4 Thunderclap Kit Instructions V2 Page 4 of 11 Chip Sockets (±) There are two 8-pin sockets and one 16-pin socket. Sockets are marked with a small U-shaped notch on one end that must line up with the outline on the PCB. Once the socket is soldered in place, the PCB outline will not be visible, so it is important that the sockets are oriented correctly in order to ensure that the chips are inserted correctly.
  • Page 5 Thunderclap Kit Instructions V2 Page 5 of 11 Chips (±) There are three chips. Two of the chips are the same size, so refer to the photo to make sure you are inserting each chip into its appropriate socket. Note the direction of the chips before inserting them. The notch on the chip must line up with the notch on the socket.
  • Page 6 Thunderclap Kit Instructions V2 Page 6 of 11 Off-board Parts These parts are connected to the PCB via wires, as opposed to being soldered directly to the PCB. Off-board parts include pots (potentiometers), buttons, and jacks. The exact parts will vary depending on which version of the kit you ordered (stomp box or panel mount).
  • Page 7 Thunderclap Kit Instructions V2 Page 7 of 11 Potentiometers The potentiometers (pots) can either be soldered directly to the PCB, or they can be connected to the PCB via wires. You can even do a combination where one or more pots are board-mounted and the others are connected with wires.
  • Page 8 Thunderclap Kit Instructions V2 Page 8 of 11 Output Jack (±) Your kit came with either ¼ inch or 3.5 mm jacks like the ones shown below. Refer to the diagram below. Make sure that the right pins on the jack are connected to the correct holes in the PCB. The round pad is the ground and connects to the shield lug on the jack.
  • Page 9 Thunderclap Kit Instructions V2 Page 9 of 11 Stompbox Power (±) If your Thunderclap is a stomp box, the simplest way to connect the power is to connect wires straight from the power jack to the PCB. Then, the unit is powered on when the power supply is plugged in. Connect the positive to either of the holes marked V+, and the negative to any of the six holes marked GND.
  • Page 10 Thunderclap Kit Instructions V2 Page 10 of 11 Finished That’s it. Your Thunderclap is complete. Congratulations! Pictures This is what the assembled Eurorack module looks like. In this picture, each button and jack uses a different color wire to make it stand out. The ground wires are all black.
  • Page 11: Bill Of Materials

    Thunderclap Kit Instructions V2 Page 11 of 11 Bill of Materials Board-mounted parts: Quantity Description Marking on part Refdes BAT85 Schottky Diode BAT85 1N4148 Diode 1N4148 D2, D3, D4, D5, D6, D7, D8 220R Resistor black black R7, R9, R10...