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Control system now working

A project log for Manual SMT Pick and Place Machine

CNC machine and custom made stepper motor controller to manually pick up SMT components and place them on a PCB with microscopic accuracy.

Tegwyn☠TwmffatTegwyn☠Twmffat 03/15/2017 at 08:500 Comments

The machine can now be controlled by fingers!

I revamped the breadboard circuit (3rd time) and got all 4 axis's working using an Arduino Mega 2560 and four L293E motor control chips. 8 of the analogue ports had to be used as digital ports, which was fine. The chips themselves are really easy to figure out and the connections are essentially symmetrical in 2 dimensions.

The four push buttons, bottom right, allow any particular motor to be turned on whilst the others remain off. The potentiometers allow coarse and fine control.

Next job - extend the main upright frame upwards by about 50mm to allow the needle to be attached. Then connect the vacuum tube and test it out!

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