I've been working on a project to connect my Arduino Mega 2560 to A robot arm I made a few years ago, This is my first real project so I'm a little unsure about a few things. I've asked a question about this before but now I have some images and more information and I still have a few questions about the subject.
Here's a labelled image of the robot arm:
here's an image of the PCB with the pins I aim to connect to labelled:
It's powered by 4 Duracell+ 1.5v D batteries
When connected to the positive terminal pin: The gripper closes M2, M3 and M4 move upwards M5 turns anti-clockwise (from above)
When connected to the negative terminal pin: The gripper opens M2, M3 and M4 move downwards M5 turns clockwise (from above) The LED turns on
My plan is to control it using 11 transistors (2 per motor + 1 for the LED) and connect the gates/bases to the Arduino but there's a few things I'm not sure about: Should this work Would this be the right type of Transistor:http://www.maplin.co.uk/p/2n7000-mos-fet-transistor-to92-case-uf89w ? Would all of the collectors/drains be connected to the battery terminals or would it be different for positive and negative?
I may also have other questions in the future, thank you in advance.