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Shopping cart close. My account. Sign in close. Lost your password? By changing the potentiometer I need to set 5 values and find the output voltage given on the circuit, can you help me. Your email address will not be published. Save my name, email, and website in this browser for the next time I comment. Currently you have JavaScript disabled.
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Click here for instructions on how to enable JavaScript in your browser. Circuit Diagram. I need to convert 3v to 5v, what do i modify in this circuit? The BC is only capable of mA so this would be a low current application. You need to find an IC that functions like the but runs on 3v instead of 5.
Leave a Reply Cancel reply Your email address will not be published. This website uses cookies to improve your experience. The transmitter draws no power when the data pin is low not transmitting. So you can connect VCC of the transmitter permanently to 5volt or a 9volt battery. Range depends highly on the quality and aerial of the receiver and noise sources around it. No and NO! Why the desire to misuse abuse an output pin? As already mentioned, it's not a power supply.
If you need maximum output power, you need 12 volts and the only way to get that is with a boost converter. Another very good source in the US is Pololu. Going so can destroy the Arduino! Mark, why would this destroy the Arduino?
Well, I wanted to keep the 5V pin free in case I add other stuff later on that requires more mAs. I a curious why this is a bad idea as long as I stay below the max mAs I can draw from a pin. Thanks for the tip regarding the mini DC-DC boosters.
I was searching ebay before but I mostly just got those larger modules I guess 'mini' is the keyword here. Instead connect it to the 5V pin of the Arduino which should be connected directly to the USB cable no regulator or anything. Agreed, if I add a booster then I will exceed the max of 40mA from one pin. That's why I was asking for alternative solutions to get to 12A while still using just ONE cable for serial communication, power and ideally programming.
That makes me thinking, could I combine two output pin? I probably will get more flag about that but why can't I use a pin for power as long as I stay within the allotted mAs?
What makes the difference between powering a device and providing a "signal" to another device? In any case, I am fine using the 5V pin if that indeed does the trick to power the 8 relay module, serial communication, Arduino and all over one USB? I guess I will just use that other device I listed earlier based on some previous feedback. A Nano on USB supply has only 4. Is that going through a regulator or so?
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