Solution Solved of last minute problem

I had previously mentioned about the last minute problem that I encountered with my turntable.

Problem: Jittering of turntable.

Cause: The jittering is due to the magnetic switching of the relays.

Solution: To use a Stepping Motor Controller Driver IC instead of the relays.

Here is a photograph of the new stripboard I made using a single IC chip to control the four steps in the stepping motor:

The black chip on the stripboard is the Stepping Motor Controller Driver IC. One side is equal to two relays. The live line is for the two Enable pins on the IC and also the Arduino live wire.

The live line 2 is for the main power supply and also for the two power pins on the IC. The ground line is the ground for all of the circuit. You can also see how the stepping motor wires are connected onto the stripboard.

Here is a photograph of the Arduino:

I used 0.1 inch Header Plugs to solder the wires onto the Arduino, this way I don't need to solder onto the Arduino.

Here is a video of the turntable now working successfully without the jittering that I had previous encountered:

I did not have the projector with me therefore could not test it with the projector. But in replacement of the projector I used 4 bags of sugar. Each bag weighs 1kg therefore, if in total the turntable is holding the weight of 4kg and is running smoothly.