Quantity   Component name
1 × Arduino UNO with Cable
2 × 100nF Capacitor
1 × LM336-2.5V voltage regulator
4 × 10kΩ Resistor ±1%
2 × 470Ω Resistor ±1%
3 × 680Ω Resistor ±1%
3 × 470k Resistor ±1%
1 × Male Header Strip 2.54mm
3 × 4mm Banana Jack Female https://www.aliexpress.com/item/10pcs-lot-5-colour-PCB-installed-4mm-banana-socket-for-Instrument-multimeter-power-supply/32509887662.html?spm=a2g0s.9042311.0.0.17d34c4dM763jE
1 × 12mm Momentary Switch SPST with LED https://www.aliexpress.com/item/5PCS-1-set-12X12X7-3-Tactile-Push-Button-Switch-Momentary-Tact-LED-5-Color-12X12X7-3mm/4000059649674.html?spm=a2g0s.9042311.0.0.17d34c4dM763jE
3 × 4mm Banana Jack to Alligator Clip/ Test Hook Wire