555 DC Motor Speed Control

This is a pretty cool circuit that allows you to control the speed a DC motor of considerable size! This circuit was made as part of the Jameco and Instructables Hacknight Hosted by H3 Laboratories in El Paso Texas

Jameco sent us a grab bag of awesome components that we put into use right away!

Bill of Materials:

1 - 555 Timer IC (from Jameco)
2 - Small Glass Rectifier Diodes
1 - High Current Rectifier Diode (Jameco)
1 - 1MΩ Potentiometer (From Jameco)
1 - (Green, Red, Brown) Resistor
1 - 1KΩ (Brown, Black, Red) Resistor
1 - Power MOSFET
2 - .01 µF Ceramic Capacitors
1 - DC Motor

Step 1: Install Jumper Cables

We will be needing a lot of jumper cables. I tend to install them first and later put in the components but you can do it any way you want just follow the schematic. If you want, you can follow my way.

Install the 555 IC on the breadboard.

Step 2: More Jumpers

Install the other jumper that will be going to the potentiometer.

Step 3: Jumpers

More jumpers connecting pins 4 and 8 and 2 and 6

Step 4: Install the Two Capacitors .01µF and Diodes

Follow the picture

Step 5: Install the Remaining Components As Shown in the Picture

The circuit is finished follow the schematic for more clarification on the position of components.

Step 6: Video

Here we have a video demonstration of the circuit working:

This circuit was made as part of the Jameco and Instructables Hacknight Hosted by H3 Laboratories in El Paso Texas