Hello EZ Robot! Meet Dusty, he is a omnibot torso and I currently have the choice of robbie at head or a omnibot done where you can see inside. He will handle a few basic functions and us made more simple than his big brother Jarvis.
- He can vacuum (which is loud) with power brush and impeller
- He can "sweep" nearly silent by running the power brush at a reduced voltage and a small DC blower providing low level auction. 3.dusty will have two germicidal bulbs ,.one facing downward to the floor and another behind intake fans that not only cool electronics but it pulls air through a Honeywell two stage carbon filter. 4.dusty has 4 build in filters foam pre filter , and 3 carbon filters.
- He will have a camera on pan tilt bracket. He will be controlled by Bluetooth or wifi.
- Long runtime , 2 x 12v 7ah batteries.
Any other suggestions guys?
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By jstarne1
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you are wiring the leds in parallel the will be fried with the 12v use a 2 v power supply instead
Woops drew it wrong ill fix it in a minute . I was going to draw 5 leds in series and 10 columns parallel
make sure your supply could handle 4 amps
I like that idea. Are you putting in resistors at each rung?
What is your calculation to figure that?
@gunner I avoid resistors when i can. They run 2 to 2.5 v 2.5 x 5 is 12.5 volts when 5 are wired in series. I may use a resistor .... shrug.... well see later this is just a idea.
As quickly cut and pasted from a web site...
"Calculate the value of the limiting resistor by subtracting the LED's forward voltage from the battery voltage and dividing the result by the LED's forward current. For example, assume the forward voltage is 1.2 volts, the forward current is 20 milliamperes, or mA, and the battery voltage is 3 volts. The limiting resistor value is (3V-1.2V)/.02A = 75 ohms."
I hate math
but here we go on the fly... So add up the LED's in each rung - 5*2v=10v (12.5v-10v)/.02A = 125 ohm resistor per rung.
Now this is where I am guessing, but I think that each additional rung will just draw more amps... but will not really alter the above equation.
Do you have an android phone or tablet?