However, there are some approaches you can take to use Arduino with Python or other languages. One idea is to run the main program on a PC and use the serial connection to communicate with Arduino through the USB cable. The sketch would be responsible for reading the inputs, sending the information to the PC, and getting updates from the PC to update the Arduino outputs.
Fortunately, there are standard protocols to do all this! Firmata is one of them. This protocol establishes a serial communication format that allows you to read digital and analog inputs, as well as send information to digital and analog outputs.
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pySerial: Arduino Uno cannot run Python directly, but you could design your own Arduino sketch and use pySerial to establish a serial connection. Then you can control Arduino with Python using your own protocol.
APPLIANCE WATTAGE APPLIANCE WATTAGE clock radio 10 coffee maker 900-1200 clothes washer 350-500 clothes dryer 1800-5000 dishwasher 1200-2400 ceiling fan 65-175 hair dryer 1200-1875 clothes iron 1000-1800 microwave 750-1100 refrigerator 1725 computer: CPU 120 VCR/DVD 17-21/20-25 Computer: Monitor 150 19" color television 110 stereo 400 water bed 120-380 Now let's calculate the annual cost to run an appliance for a year. Multiply this number by your local utility's rate per kWh consumed (In Denver the cost is 8.9 cents/kWh) to calculate annual cost. EXAMPLE If John uses a window fan (200 watts) 4 hours a day for 120 days per year, how much does it cost him to run his fan per year? 200 X 4 X 120 = 96 kWh 1000 96 kWh X 8.9 Cents/kWh = $8.16 per year PROBLEMS TO SOLVE After school each day, Sally uses her computer to do her homework. If she has an average of two hours of homework per night for 180 days of school per year, how many Kilowatt-hours are consumed and what is the annual cost of using her computer? A CPU and monitor use 270 Watts. Choose a home appliance that you use and calculate your own energy consumption. Appliance: _________________ Wattage: __________________ Hours used Per Day: ________ You can determine wattage, voltage and current using the following formulas: wattage = current X voltage current = wattage/ voltage voltage = wattage/current Fill in the chart below. The copier has been completed as an example. APPLIANCE VOLTAGE CURRENT WATTAGE COST HOURS/YEAR ANNUAL COST copier 115V 11A 1265W $0.08kWh 120 $12.00 printer 120V 5.5A monitor 120V 2.0A computer 200-240V 3.0A fax machine 1.0A 45W TV 120V 75W microwave 120V 1500W scanner 100-240V 2.0A Lighting Dilemma American homes contain over 3 billion lightfixtures. It takes about 138 billion kilowatt-hours of energyper year to operate these lights. 6-10% of our electricity billsare spent on lighting costs. The most common light bulbs in ourhomes today are incandescentor halogen bulbs. Thereare also Compact FluorescentLights (CFLs). Compact Fluorescent lights contain gas insteadof a wire filament. The electric current makes the gas glow, whichproduces very little heat. CFLs last up to 10 times longer anduse 70% less energy. Using energy efficient bulbs can both savemoney and natural resources. 2ff7e9595c
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