A binary counter
BINCO is an 11-bit binary counter that can be configured to count up or down. It uses tactile domes as buttons, one of which can control the counter to count slow or fast. Another resets the counter.
BINCO is powered by a 3V CR2032 and the circuit is designed for it to last a long time while not being used.
Assembly and usage
The project includes the following components
- 1x 14-bit binary counter IC, Nexperia 74HC4020D,652
- 1x 555 timer IC, TI TLC555QDRG4
- 11x Reverse mount green SMD LEDz, Kingbright KPTL-3216CGCK
- 1x N-channel MOSFET SMD transistor, ON Semi BSS123
- 16x 1.5KΩ 0805 resistors, Multicomp MCWR08X1501FTL
- 2x 47KΩ 0805 resistors, Multicomp MCWR08X4702FTL
- 2x 1µF 0805 capacitors, Multicomp MC0805F105Z160CT
- 1x CR2032 battery clip, Multicomp BC-2001
- 1x Dome (reset), Snaptron GX05300
- 1x Double action dome (count slow/fast), Snaptron DT10340N
- 1x Dome (on/off), Snaptron F10450
- 1x PCB
- 1x Piece of adhesive sheet
Follow the infographic for assembly information. Pay attention to how to operate BINCO correctly.
BINCO is an open source design, as is most of our work. You can find the design files for the hardware and packaging at our GitHub repository. You can edit the design files using our own PCB design open source software, PCBmodE.
Finally, community contributions for this project are on our community site.