The uno is connected to a stepper motor which is currently working fine. In the attached diagram, I have an mp3 module), push button, external computer speakers, and a 3.5 male to female stereo extension cable. I'm trying to attach everything, but have a few questions.
Can I solder two wires to 1 ground pin on the mp3 card?
Since the mp3 card is taking the 5V slot on the arduino, where can I place the push button voltage? Would the 3.3V on the arduino work?
Forgive me for these questions as I have only done 1 previous solder job, which was just a reconnection.
Is it feasible to use one end of a jumper wire to GND on the arduino and to cut the other end of the jumper wire off, strip the wire, and sodder it directly to GND on the mp3 card?
MP3 to Arduino 5V connected using M-F jumper wire. Push button 5V to Arduino 5V connected using M-F jumper wire. How do I "tie in" the male ends of 2 jumper wires to use 1 arduino 5V?
Is it feasible to use one end of a jumper wire to GND on the arduino and to cut the other end of the jumper wire off, strip the wire, and sodder it directly to GND on the mp3 card?
Yes.
How do I "tie in" the male ends of 2 jumper wires to use 1 arduino 5V?
If you are going to use pre-made jumper wires, a mini-breadboard would be one answer.
