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A Really Simple RS232 9 Pin Sex Change.
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sir code plz ???
led matrix project using shift register and pic16f628a micro
Assalam o alikum !!!You were right sir.Bad connections were there in my board.Now it is working but text is Mirrored . What should i do now ?
By the way , nice tutorial. keep it up
code is wrong for case a. check again :)
Control any AC device via PC RS232
Assalam o alikum !!!Yes, LED's anode and cathode legs are soldered correctly.yes, pull-down resistor of 10k connected between the LOAD and GND(i could not find 12k in my lab)Yes connections are same as you told sir. i was thinking that may be my leds consume more current than yours and 7219 is unable to sink this much current ??? or may be 5v from laptop port is not juiceful enough to operate them ?
Sir i have made this my matrix using circuit diagram in step2.My matrix is not showing anything even test program is not running.i used red leds (5mm) to make my own 8x8 matrix.Are there any current problems ? i have checked this code on Ready made 7219-Matrix-Module ,it works but in flipped manner means . i want to make my own matix as shown in step2. plz any suggestions ?
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Wish you a Merry Christmas!
home night led lamp
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