Are you having the exceptional sharp investigation ability, or you’re a natural born investigator in the Electronic field? Well, not matter which types of person you are, this SIM Card Reader will still a plus for your experimentation in the SIM & Smart Cards industry.

The open source software can be applied to read from or write to the card, after the reader design is being built. Beside that, they can be used to backup any Stored SIM card data, recover those accidentally deleted SMS/Phone contacts and much more.

Here are those components and tools you need to standby for this task:

Components

  • A PCB
  • A SIM card holder
  • A 3.579545 MHz Crystal
  • A DB-9 female connector w/solder cup
  • A CMOS Hex inverter
  • A 7805 (TO-220 package) 5V regulator
  • A NPN transistor with EBC pinout
  • A 0.1uF ceramic capacitor
  • Two 18-22pF ceramic capacitor
  • A 100uF / 10V capacitor
  • A Green 3mm LED
  • A Power diode
  • Two 5.1V Zener diode
  • A 1/4W 5% 1Meg resistor
  • Four 1/4W 5% 10K resistor
  • Three 1/4W 5% 1.0K resistor
  • A 9V battery clip
  • A 6 pin header

Tools

  1. Soldering iron
  2. Solder
  3. Multimeter/Oscilloscope
  4. Flush/Diagonal Cutter
  5. Desoldering Tool
  6. “Handy Hands” (is better to equip it with a magnifying glass)

Ok, let’s go and starting the project…

First thing first, you need to place a 1.0K resistor into the PCB board in the “R8″ holes. Turn over the PCB and soldering both the pad. Then, cut off the long leads by using the diagonal cutter.

Next, place the 1N4001 protection diode into the “D1″ holes on the PCB board, solder and clip the diode.

Repeat the steps with the others in sequence:

  1. 7805 5V regulator in “IC2″ holes
  2. LED in “LED1″ holes
  3. R2 and R7 (Two 1.0K resistors)
  4. R3, R4, R5 and R6 (10K resistors)
  5. R1 (1Meg resistor), D2 and D3 (5.1V Zener Diodes)
  6. 3.57 MHz crystal in “X1″ holes
  7. 2 18pF ceramic capacitors in “C2″ and “C3″ holes
  8. electroytic capacitor C4
  9. 74HC04 hex inverter IC1
  10. The ceramic capacitor C1
  11. NPN transistor Q1

When you come to the 9V battery holder, you must put the red wire into ‘+’ and black wire into ‘-’ on the PCB, turn it over and solder the two power wires. Make sure you’ve tightened up the knot, so it can connect to a 9V battery.

Then, hold the SIM card holder in one hand and join it with the pin and pad, by remelt some of the solder. Heat up the pad and pin together, and pole a small bit of solder in.

After that, you must slip the female DB-9 connector at the end of PCB, and double check the pins and pads line up.

Lastly, you can solder in the 6-pin male header, if you’re decided to use and FTDI cable to connect to the board. Also, you can make the long pins point down, if you rather like to plug it into a breadboard.

Voila, you’re done with the project and you can test it now! [source]

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