EEVblog #392 - 555 LED PWM Hack

555 T-Shirt: http://www.zazzle.com.au/classic_555_timer_chip_schematic_circuit_t_shirt-235193027808469926
Hacking the Mantis Elite microscope to control the LED brightness with a 555 PWM circuit.
Forum Topic: http://www.eevblog.com/forum/blog-specific/eevblog-392-555-led-pwm-hack/

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