Discussion of the battery

I have a question... For example, I usually have a DC 12V 0.16A motor, but can I run this motor with a 3v battery..?? It is.. The front specifications are specifications for the cooling fan, but they actually rotate even with a 1.5V battery... The specifications are written for each motor... Is this

Among the current measurement methods, there is a method of measuring current using shunt resistance. I am curious about the role of short resistance at this time.

1. When setting STM32 GPIO, if you look at the MODE, there are Push-Pull and Open-Drain MODE. To find out the difference between the two modes. 2. Push-Pull 1) It is a circuit consisting of two TRs. The upper part is PNP TR (P-MOS), and the lower part is NPN TR (N- MOS). 2) If'Low' is o

I am trying to charge a lithium-ion battery in the mppt solar charge, but it seems that the 3 wires of black, yellow and blue are (-) and the red is (+) in a 4-pin type. ) Is it necessary to connect to +- to the mppt charging terminal by subtracting the 3 wires? Add to I wonder why (-) is a 3 line!

Good morning. I am a student interested in DIY. I am going to make a remote control by referring to the example of Arduino's IRRemote library. What I am trying to make is not just a remote control, but a remote control that can zoom with a lens by putting a 3W power LED inside the Daiso lantern hou