i like yugioh, so i build thing from yugioh :3
it is basically a calculator that can do 2 calculation screens at once and it has special buttons that would be useful for yugioh
i code the stuff that i put on the pcb
16 buttons, price $8 (i can only find in pack of 200), link https://www.amazon.com/Hilitchi-200-Pcs-Tactile-Momentary-Assortment/dp/B071KX71SV 1 swtich, price $9, https://www.digikey.com/en/products/detail/nkk-switches/GW12LJPCF/1014808 2 screens, price $15 (can only find pack of 15) https://yanlania.com/products/copy-of-0-39-inches-5-digital-7-segment-led-display-red-illuminated-ultra-bright-x10pcs?srsltid=AfmBOoo-E4cp0fLrsGiIyAsbQR7TzCg4ztavmSq28jkVQcu-OPAeRpD1 2 resistors, price free i have a lot of them already 16 diodes, $0.17 each, , https://juriedengineering.com/products/1n4148-do-35-switching-signal-diode-new?utm_source=chatgpt.com pico, $5, https://www.amazon.com/Raspberry-Pi-Pico/dp/B09KVB8LVR/ref=asc_df_B09KVB8LVR?mcid=b3d7090e0aaf3fac91ccf1579d413aef&hvocijid=11375418671374882239-B09KVB8LVR-&hvexpln=73&tag=hyprod-20&linkCode=df0&hvadid=721245378154&hvpos=&hvnetw=g&hvrand=11375418671374882239&hvpone=&hvptwo=&hvqmt=&hvdev=c&hvdvcmdl=&hvlocint=&hvlocphy=9012421&hvtargid=pla-2281435177858&psc=1ocint=&hvlocphy=9012421&hvtargid=pla-2281435177858&psc=1 MCP23017_SO i/o expander, $1.70, https://www.digikey.com/en/products/detail/microchip-technology/MCP23017-E-SS/894273?utm_source=chatgpt.com pcb, $32.15, jlcpcbb