References
Websites
www.thingiverse.com Great site to to find things to 3D print
www.sparkfun.com Great site to find parts for prototype. Sometimes pricey.
www.arduino.cc Arduino webpage
www.oshpark.com A company based in the USA that prints quality Circuit Boards for a reasonable price
www.instructables.com A website full of ideas and things other people have made
www.fritzing.org I use this program to design my simpler Circuit Boards and layouts
www.taydaelectronics.com A site that sells electronic components for a reasonable price.
http://www.seeedstudio.com/depot/ A company that prints high quality Circuit Boards for a reasonable price but not based in america. Only a value when buying lot or large circuit boards.
Abbreviations and definitions
watts watts the term for power (volts * current)
volts the change in electrical potential between two points
amps current, flow of electrons/electricity, rate of flow
ac Alternating current is the flow of electricity that periodically reverses direction. This is what is found in your house.
dc Direct current is the flow of electricity in only one direction and normally at a specific constant level. Batteries provide dc current and voltage.
vdc Volts direct current
vac Volts alternating current
vin voltage in
vout voltage out
R1 R2 R... resistor 1 resistor 2 resistor ...
ugh! abreviation for bad, needs inprovements, and
Equations
watt volts * amps
resistor divider vout=vin*r2/(R1+R2)
multiple resistors Re=1/(1/r1+1/r2+....)
ohm's law voltage=current*resistance
By Palmer Tetley