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Step 5PWM Fan Controller - Completion
The final circuit was built onto a perf board. The circuit had to be kept quite small so that it would fit in the small area beside the fans in the fan enclosure. A piece of a business card was attached to the bottom of the perf board to prevent the circuit from shorting out to the metal case of the hard drive enclosure. Hot glue was used to isolate some parts of the circuit as well as providing some strain relief in other areas. Hot glue isn’t conductive which makes it perfect for these quick and dirty applications.
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