The Project

Our group is using the shop-bot to machine certain parts for our individual projects. Tom designed a custom computer case using CAD and converted the file onto the shop-bot and used the machine to cut out the parts. Alex designed a guitar body with CAD and converted the file onto the shop-bot and is using it to cut out the chambered guitar body. I am designing a guitar effect pedal case that will house a circuit for the effect. I am also burning the circuit board and soldering all of the components onto it.

Engineering Frameworks

The engineering frameworks that I am working into my project are electricity and manufacturing. The electronic aspect of my project is the circuitry of the effect pedal. Soldered on the ciruit board are many different resistors and capacitors. There are inputs and outputs wired into the circuit and also the foot switch to turn the effect on or off. The manufacturing aspect of my project is the designing of the effect pedal case and converting the file to be able to cut out the part on the shop-bot.

What We Have Accomplished So Far

At this point in time, we have figured out how to convert the CAD files to the shop-bot to be able to machine the part that was designed. Tom has cut out his custom case, put it together, and began staining the wooden case. Alex has converted his CAD file, ran a test run on a block of foam, and preped his wood for cutting. I have gotten most of the electronic parts that I need for my circuit, began the steps for burning the circuit board, and started my plans for the design of my effect pedal case.

What Problems Have We Overcome

A problem that we have overcome is getting the shop-bot to stay connected to the computer. When we first tried running test cuts for our parts, the computer would lose connection with the computer very often and we would have to start the cut over. Tom figured out that the problem was caused by windows auto-update. He turned off windows auto-update and the problem was solved.

__Significant Problems__

The significant problems that I am having is getting all of the electronic parts that I need for my circuit. I have about half of the parts but still need a decent amount of them. I am making an order for the rest of the parts.

Materials and Info Needed

Resistors (1/4 watt rating)

1 - 100 ohm

1 - 220 ohm

4 - 1k

1 - 4.7k

7 - 10k

1 - 51k

2 - 510k

1 - 4M7 (4.7M) (optional)

Pots (1/4 watt rating)

1 - 25k linear (tone)

1 - 100k linear (level)

1 - 500k log (audio) (drive)

Capacitors (minimum rating 16 volts)

1 - 51pF

1 - 0.047uF

1 - 0.02uF

1 - 0.1uF

2 - 0.22uF 35 volt tant

2 - 1uF 50 volt non-polar

1 - 10uF

1 - 47uF

1 - 100uF (optional, use if you plan to use a power supply)

Transistors

Q1, Q2 - 2N3904, 2N5088 or 2SC1815

ICs

IC1 - JRC4558D

Diodes

2 or 3 - 1N4148, 1N914 or 1N34A

Other

2 - Transistor sockets (optional)

1 - IC socket (eight pin)

1 - DPDT or 3PDT heavy duty foot switch

1 LED and 1 4k7 (4.7k) resistor (optional if you use a 3PDT with LED indicator)

2 - quarter inch jacks

9v battery snaps & holder and/or DC jack

Copper-clad board, etchant, or perfboard

24 gauge stranded wire

Enclosure