I built an RS232 circuit with a max232 and connected it to my pc's serial port. I was able to cntrole the speed of a fan by sending pulses with different frequencys. so it does work
serial comes out in 8 bit pieces like 10100110, it can pwm a fan but how can I get it to light up different leds with different pulses? like 00000000 keeps all leds off. 00000001 will turn on led one and 00000010 will light led 2.
Its to control a 7seg or a matrix of leds. Any suggestions?
serial comes out in 8 bit pieces like 10100110, it can pwm a fan but how can I get it to light up different leds with different pulses? like 00000000 keeps all leds off. 00000001 will turn on led one and 00000010 will light led 2.
Its to control a 7seg or a matrix of leds. Any suggestions?
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