I need some help on this Arduino project. The breadboard wiring I did isn’t working for power delivery and we haven’t connected everything up thus far. I’m getting a drop in voltage when I turn on two devices, the amp pull jumps, and I blew the capacitor.
1x Arduino Uno Rev 3
1x Pololu A4988 Stepper Driver
3x Solenoid
1x Grove Relay
Right now I’m powering the Stepper driver and one Mosfet driver with a 12-v power supply. The Arduino is powered by a USB from the computer. With that said, I can run both the motor and Solenoid separately with no issues. However, when I run both, the voltage on the power supply drops from 12v to 7v, and the amperage jumps from .3 to 1.5A. I also start getting a lot of jitter in the motor depending on the delay and step size it's currently set to. The main system is going to need to run the three solenoids the motor Arduino and the relay in various combinations of on/off.
The A4988 and the Mosfet drivers can take higher voltage, so I attempted to smooth things out by increasing the voltage and I popped the 100uF capacitor. So I figured, I should step back and ask for some help before I cause any more damage.
right now I have the power plugged into a housing connector on the breadboard that I soldered down and I'm just running power and grounds directly to each of the device's power inputs. Wires are just soldered together to make the connections.
I'm not an EE, so this is new territory for me.
Would like your insight and would be interested in learning what I should look at when I come across other projects like this.
