Quantity   Component name
1 × 3D-printed parts Link to Thingiverse: https://www.thingiverse.com/thing:2838239
4 × 15kg Servo's link: https://www.banggood.com/MG996R-Digital-Metal-Gear-Servo-For-Robot-ZOHD-Volantex-Airplane-RC-Helicopter-Car-Boat-Model-p-78320.html?p=E01411629100201406T1&custlinkid=696024
1 × 2S lipo 7.4V link: https://www.banggood.com/7_4V-2S-2000mAh-8C-Lipo-Battery-Compatible-for-Frsky-ACCST-Taranis-Q-X7-Transmitter-p-1249125.html?p=E01411629100201406T1&custlinkid=669244
2 × 5mm red LED link: https://www.banggood.com/Geekcreit-375pcs-3MM-5MM-LED-Light-Emitting-Diode-Beads-Resistance-Lights-Kits-Bulb-Lamp-p-1027601.html?p=E01411629100201406T1&custlinkid=669272
2 × pushbutton link: https://www.banggood.com/100pcs-Mini-Micro-Momentary-Tactile-Tact-Switch-Push-Button-DIP-P4-Normally-Open-p-917570.html?p=E01411629100201406T1&custlinkid=669260
2 × 200 ohm resistor link: https://www.banggood.com/Wholesale-Geekcreit-600pcs-30-Kinds-Value-1-14W-Metal-Film-Resistor-Assorted-Kit-20pcs-Each-Value-p-53320.html?rmmds=search&cur_warehouse=CN
1 × 2.54mm Single Row Male Pin Header Strip For Arduino link: https://www.banggood.com/10-Pcs-40-Pin-2_54mm-Single-Row-Male-Pin-Header-Strip-For-Arduino-p-918427.html?rmmds=search&cur_warehouse=CN
3 × springs from old pens
1 × 1mm diameter steel rod or similar as shafts for the fingers
1 × nylon wire
1 × somewhat larger spring but less stiff as the springs from the pens this spring brings the thumb back to it's original position. I just used one I had lying around and I thought was gonna work
2 × 9g servo's link: https://www.banggood.com/TowerPro-SG90-Mini-Gear-Micro-Servo-9g-For-RC-Airplane-Helicopter-p-1009914.html?p=E01411629100201406T1&custlinkid=359550
1 × arduino nano V3 link: https://www.banggood.com/Geekcreit-ATmega328P-Nano-V3-Module-Improved-Version-With-USB-Cable-Development-Board-For-Arduino-p-933647.html?p=E01411629100201406T1&custlinkid=255135
1 × DC-DC Step Down Adjustable Constant Voltage Current Power Supply Module link: https://www.banggood.com/LM2596-DC-DC-Verstellbar-Step-Down-Schaltregler-Power-Supply-Module-p-88252.html?p=E01411629100201406T1&custlinkid=255154