README added

README.md

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+# PocketTENSUnit
+Many professionally made TENS units can cost hundreds of dollars. The goal of this project is to find information and build a smaller unit that can serve the same purpose. 
+
+A TENS unit stands for Transcutaneous Electrical Neural Stimulator. It sends small amounts of currents between two electrodes on the body at high voltages in order to stimulate the nerves and muscles. This can have medical advantages. 
+
+The part list for such a device, without using Arduino as the function generator is shown below, and the diagram is found here(To be linked).
+
+NON-MODULAR PART LIST
+Parts
+1x EF25 ferrite transformer
+1x 4AA battery holder
+4x AA Batteries
+1x 100kohm pot
+1x 2Mohm pot
+1x 500ohm pot
+2x SPDT toggle switches
+2x LED (Different Colors)
+Various lengths of small, stranded wire
+TENS Printed Circuit Board (To be linked)
+Circuit Enclosure(To be linked)
+16mm knobs for pots
+Semiconductors
+1x MC34063 DC-DC converter
+1x IR2155 MOSFET driver
+1x LM334Z current source
+1x 555 timer
+2x IRF610 MOSFET (equiv 200V @>1A)
+1x 39V 1W zenerdiode
+2x 1N4936 500V diodes
+3x 1N914 diodes
+3x 1N4148 diodes
+Capacitors
+1x 100uF 16VW PC
+1x 10uF 25VW PC
+2x 10uF 16VW PC
+1x 4.7uF 63VW PC
+3x .47uF 100VW MKT(Ceramic)
+1x .33uF 63VW MKT
+1x .01uF 63VW MKT
+1x .001uF 63VW MKT
+Resistors
+1x 100kohm 
+1x 47kohm
+1x 18kohm
+1x 10kohm
+1x 2.2kohm
+3x 1khom
+1x180ohm
+1x 150ohm
+1x 68ohm
+1x 12ohm
+1x .022ohm 5W
+