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no 25 bebectrl lm3914 4017 ledmatrix ctrlr
### DESCRIPTION
do you know.. osiloscope? dotmtrix led can use as fun. not detil resolution but enough to visualisation wave form audio. no microcontroller no sourcecode :)
### TECHNICAL DETAILS / COMPONENTS
row controlled by lm3914 check datasheet for modification
col scan by 4017. need more currrent up use tr inverted signal use 4069
4069 also as clock generator replace ic 555. scheme not mine. try search on google
### LEARN / TOPIC / BUILD INSTRUCTIONS
order pcb... buy parts... connect to matrix module led. vcc 5..9 volt... inject audio signal into lm3914. enjoy the show.
thanks to bebe at lombok city.. great design bro. printed at pcbway only 5 doll4r 10pcs
no 25 bebectrl lm3914 4017 ledmatrix ctrlr
*PCBWay community is a sharing platform. We are not responsible for any design issues and parameter issues (board thickness, surface finish, etc.) you choose.
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