Components List

Electronics board

Resistors

R1,R2,R3,R4,R5,R6,R7,R8,R9, R10,R11,R12,R13,R14,R15,R16,R17 = 10kΩ, SMD 0402

Capacitors

C1,C9,C10 = 47µF, electrolytic, SMD

C2 = 1µF, SMD 0402

C3, C11 = 10µF, polarised, SMD 0805

C4 = 100nF, SMD 0402

C5,C6,C7,C8 = 100nF, SMD 0603

Semiconductors

U1 = LM3940IMP (SOT-223)

U2= ESP-WROOM-32 module

U3 = LM78L05 (TO-92)

U4 = ULN2803A (DIP18)

Miscellaneous

IC1,IC2 = A4988 module

J1 =  power connector, SMD

P1 = 5-pin pinheader, 0.1” spacing

P2,P4,P5,P7,P16,P17,P19,P20,P22,P23 = 3-way pin header, 0.1” spacing

P3,P6,P18 = 4-pin pinheader, 0.1” spacing

P8,P9,P10,P12,P13,P14,P15 = 2-pin pinheader, 0.1” spacing

P11 = 6-pin pinheader, 0.1” spacing

P21 = 8-pin pinheader, 0.1” spacing

S1 = pushbutton

2 pcs end of travel sensor (Microswitch with actuator)

3 pcs stepper motor

3 pcs water pump

Power adapter, 12VDC, 5A out

Mechanical structure

Linear bearings

Ball wheel

Pulley

Aluminium rods

Transport belt or chain

Bottle holders with tot measures (×7)

Wood

Screws

Worm (threaded rod)

Motor adapter, 5mm to 8mm

Metal 90° right-angle brackets (×8)

Pipe

And… some bottles of alcohol (to be consumed in moderation. Abuse of alcohol is dangerous for your health.)