I'm working on a control project, where I will be controlling two 12V Diaphragm pumps. The current that each of these pumps draw is 4A at 12V. I want to control the pumps with a MOSFET module at 12V which is powered by a AC/DC NDR-120-12 DIN-Rail Power Supply. The power supply can provide 10A which is enough for the operation of both pumps and the remaining sensors. However, I also want to power the Arduino MEGA2560 through this power supply. Is it possible to attach the Vin pin and the ground pin of the arduino to the power supply, or will 10A burn the microcontroller? I personally think that it would be fine, since the Arduino does not power any high current components by itself. I've also attached a picture to make things clearer. (There are many more stuff attached to the remaining pins, the image is just to illustrate what I wrote about)
Thank you for your time in reading this.
Maybe it will work but more likely you will have problems. It depends on how much the total consumption is and you didn't say what and how many sensors you use. At this difference of 12-5=7 volts, even with only 100mA consumption, the stabilizer must dissipate 0.7 watts as heat. You may destroy the stabilizer or at least the short and/or thermal protection will activate. I would use a 12 to 5 volt DC-DC converter.
A temperature sensor DS18B20, an ultrasonic sensor HC-SR04, 2 MOSFET modules to supply PWM signals for motor speed control, an LCD display and 2 YF-S201 flowmeters. The NDR-120-12 power supply is the main power supply for the DC motors
I'm using MEGA and not UNO mainly because of the LCD display which requires a lot of arduino pins. If I didn't have the display I would've used the UNO.
