Pynguins

Electronics

http://www.hobby-hour.com/electronics/resistorcalculator.php
http://www.justradios.com/uFnFpF.html
http://imall.iteadstudio.com/open-pcb/pcb-prototyping/im120418003.html
http://forum.allaboutcircuits.com/threads/driving-a-power-mosfet-with-an-op-amp.48711/

Code
http://playground.arduino.cc/Main/RunningAverage

Opto Coupler
Pin 1: Digital Arduino
Pin 2: Arduino Negative
Pin 3: Load Positive
Pin 4: Battery Positive

Connect Load Neg and Battery Neg together.
http://www.vishay.com/docs/83673/sfh618.pdf


MOSFET
Source - Negative
Gate - 47k resistor –> Arduino pin –> Negative
Drain - Load –> Positive
http://www.st.com/web/en/resource/technical/document/datasheet/CD00002318.pdf
http://www.irf.com/product-info/datasheets/data/irfb4110pbf.pdf
http://www.irf.com/product-info/datasheets/data/irf2804pbf.pdf



BT On/off
Source, Regulator –> GND
Gate –> D2
Drain –> BT GND
BT VCC –> Reg Pos

Dimmer Project
D5 –> Pin 1 Opto
Arduino GND –> Pin 2 Opto
CGND –> Pin 3 Opto
CGND –> batt neg
CGND –> mosfet source
47k resistor –> pin 4 opto
batt positive –> 47k resistor
load positive –> 47k resistor
mosfet gate –> pin 4 opto
mosfet drain –> load neg


Voltage divider



http://www.raltron.com/cust/tools/voltage_divider.asp

Useful bits

Lipos
http://hobbyking.com/hobbyking/store/__34269__Turnigy_1000mAh_4S_20C_Lipo_Pack_UK_Warehouse_.html
http://hobbyking.com/hobbyking/store/__32162__ZIPPY_Flightmax_5000mAh_6S1P_20C_UK_Warehouse_.html
http://hobbyking.com/hobbyking/store/__26675__Turnigy_5000mAh_6S_20C_Lipo_Pack_UK_Warehouse_.html
http://hobbyking.com/hobbyking/store/__26673__Turnigy_5000mAh_4S_20C_Lipo_Pack_UK_Warehouse_.html
http://hobbyking.com/hobbyking/store/__32119__ZIPPY_Flightmax_5000mAh_4S1P_20C_UK_Warehouse_.html
http://hobbyking.com/hobbyking/store/__31952__ZIPPY_Flightmax_5000mAh_3S1P_20C_UK_Warehouse_.html
http://hobbyking.com/hobbyking/store/__32164__ZIPPY_Flightmax_5000mAh_3S1P_30C_UK_Warehouse_.html
http://hobbyking.com/hobbyking/store/__31951__ZIPPY_Flightmax_5000mAh_2S1P_20C_UK_Warehouse_.html
http://hobbyking.com/hobbyking/store/__31930__Turnigy_5000mAh_2S_40C_Lipo_Pack_UK_Warehouse_.html

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