For the DP Badge project we used some tiny TSSOP logic ICs, including the ULN2003 (pictured above) , 74HC595, 74HC4017, and the 555 timer. Previews from our Eagle part library are blow the fold.
For the DP Badge project we used some tiny TSSOP logic ICs, including the ULN2003 (pictured above) , 74HC595, 74HC4017, and the 555 timer. Previews from our Eagle part library are blow the fold.