This document provides specifications for various components that could be used to build an automated vending machine including sensors, modules, motors, displays, pumps, power supplies and materials. Key components listed include an infrared proximity sensor, relay module, capacitive proximity sensor, load cell, Arduino Mega, LCD display, water pump, servo motor, power supplies, cables, buzzers, converters, dispenser, wireless modules, solenoid, laser sensor, and various materials for construction. Electrical specifications like voltage, current and dimensions are provided for each item.

1. Components and Specifications
Infrared proximitysensor
Chip:LM393
OperatingVoltage (VDC):3.6~5
Distance MeasuringRange (cm):2~30
Dimensions:48 x 14 x 8 mm
Weight:15 grams
Relay Module
Supplyvoltage –3.75V to 6V
Triggercurrent – 5mA
Currentwhenrelayisactive - ~70mA (single),~140mA (both)
Relaymaximumcontactvoltage –250VAC, 30VDC
Relaymaximumcurrent – 10A

2. Capacitive ProximitySensor
SpecificationsModel:LJC18A3-H-Z/BY
Tip diameter:~15mm
Dimensions:70 x 30 mm
DetectionMethod:Capacitive
OutputType:PNP
DetectionRange:+- 10 mm
Detecting:metal andnon-metallicsuchasplastic,glass,water,oil
Operatingvoltage:DC6 to 36V
Weight:84g
1KG Load Cell withHX711 A/D WeightSensorModule
Differential inputvoltage:±40mV (Full-scaledifferential inputvoltage is±40mV)
Data accuracy: 24 bit(24 bitA / D converterchip.)
Refresh frequency:10/80 Hz
OperatingVoltage:2.7V to5VDC
Operatingcurrent:<10 mA
1kg Load Cell MeasuringRange

3. Arduino Mega2560
Operatingvoltage:5V
Inputvoltage (recommended):7-12V
Inputvoltage (limits):6-20V
Digital I/Opins:54 (of which14 provide PWMoutput)
Analoginputpins:16
DC current perI/Opin:40mA
DC current for3.3V pin:50mA
FlashMemory:256 KB,8KB usedbybootloader
SRAM: 8 KB
EEPROM: 4 KB
ClockSpeed:16 MHz
I2C 20x4 ArduinoLCD Display Module

4. I2C Address:0x20-0x27(0x20 default)
Numberof Characters:20 characters x 4 Lines
Blue LED backlightwithwhite charcolor
Adjustable contrast
Supplyvoltage:5V (viaPin) 3.3V (viaIDC10)
Interface:I2C/TWIx1, IDC10 x2
Viewdirection:Wide viewingangle
Dot size:0.55 x 0.55 mm(0.02x0.02")
Dot pitch:0.60 x 0.60 mm(0.023x0.023")
Character size:2.96 x 4.75 mm(0.11x0.19")
Character pitch:3.55 x 5.35 mm(0.14x0.21")
Size:98x60x24mm(3.86x2.36x0.94")
Water Pump
Model:DC-1020
Voltage:5.5-12V
Frequency:50Hz/60Hz
Power:1-3W
Flowrate:200L/H
Head:0-1.5m
Outletdiameter:8.5mm
Size:39x38x28mm / 1.54x1.5x1.1inch

5. Servo Motor MG995
Weight:55g
Dimension:40.7× 19.7 × 42.9 mm
OperatingSpeed(4.8V noload):20sec / 60 deg
OperatingSpeed(6.0V noload):16sec / 60 deg(noload)
Stall Torque (4.8V):10kg/cm
Stall Torque (6.0V):12kg/cm
OperationVoltage:4.8– 7.2Volts
Gear Type:All Metal Gears
Stable andshock proof double ball bearingdesign
Deadband width:5 µs
Temperature range:0 ºC – 55 ºC.
Control System:Analog
OperatingAngle:120degree
RequiredPulse:900us-2100us

6. 12V PowerSupply
InputVoltage:200 – 240 VAC;100 – 120 VAC
Length:16cm
Width:9.7cm
Weight:378g
Frequency:50/60 Hz
OutputVoltage:12 VDC
OutputCurrent:up to 15 A
USB Mobile Charger Multi PinCable 10in1 Universal CordCharger
Length:23cm
OD3.0mm
USB version:2.0
Color:Black Specifications:
USB 2.0 connector
With10 differentconnectorsonthe otherend
Easy, convenienttouse

7. Good to keepanextraone for travel
Black high-impactplastic
Suitable foralmostall typesof mobile phones
Active Buzzer
RatedVoltage:6V DC
OperatingVoltage: 4-8V DC
Ratedcurrent: <30mA
SoundType:ContinuousBeep
ResonantFrequency:~2300 Hz
DC-DC Buck Converter LM2596S
Inputvoltage:4V-35V
Outputvoltage:1.23V to 30V
InputCurrent:3A (maximum)
MaximumPowerDissipation:10watts (WithoutHeatsink)
Overall dimensions:48mmx 23 mm

8. Micromatic MWD-213 Water Dispenser
Multi-functional system
Superelectroniccoolingsystem
RatedVoltage:230V-60Hz
RatedPower:450W
Electroniccoolingsystem
Easy cleaningandmaintenance
Multifunctionsystem
Withsix layersof purifyingsystem
VIdeoke Pushbutton
Weight: 15g
Size: 3.5 x 3.5 x 6 cm

9. Plastic Shredderand Motor with GearboxSet-up
Material:DependsonMaterial ChosenAbove Hexagonal Shaft(ColdRolledSteel) andSieve
(PaintedMildSteel)
Type:Single axle
Weight:15 kg
Overall Dimensions:32 x 21 x 14cm
ShaftDiameter:25 mm
ShredderMouth(Opening):124 x 149 mm
Sieve Size:4.7mmholesKeywayandKeyIncluded
KeyDimension:8x 7 x 25 mm
RecommendedMotorPower:1.5- 2 HP (withgearbox 75 rpm)

10. NRF24L01P+PA+LNA Wireless Transceiver Module
OperatingFrequency:2400MHz ~ 2524MHz
Modulation:GMSK
Transmitpower:more than +20 dbm, 50Ω
Receiversensitivity: -95dbm
Operatingvoltage:2.7V ~ 3.6V
Max Emissioncurrent:115mA
Max Receive current:45mA
Operatingtemperature: -45degreesto+85 degrees
Storage temperature: -45degreesto+125 degrees
Gain of PA: 20 dB
Gain of LNA: 10 dB
ESP8266 WiFi Module
Low cost,compact and powerful Wi-FiModule
PowerSupply:+3.3V only
CurrentConsumption:100mA

11. I/OVoltage: 3.6V (max)
I/Osource current:12mA (max)
Built-inlowpower32-bitMCU @ 80MHz
512kB FlashMemory
Can be usedas Stationor AccessPointor bothcombined
SupportsDeepsleep(<10uA)
Water Solenoid
Model:FPD-270A
Type:NC/normallyclosed
Thread:G1/2
Ratedcurrent: 12v-300mA
Insulationgrade:Einsulationgrade
Applicable fluidtemperature:0-55℃
Applicable waterpressure:0.02-0.8Mpa
Size:6.5x3.3x5.5cm/2.6x1.3x2.2inch
Color:White & Golden
Material:Plastic+ copper

12. KY-008 650nm Laser Sensor Module
Dot Laser
OperatingVoltage:5V
Power:5Mw
Wavelength:650 nm
OD: 6mm
Laser ReceiverModule
PCB size:1.5 x 1.9cm
Workingvoltage:5V
Outputhighlevel whenreceivelasersignal
Outputlowlevel whennot receive lasersignal

13. Other Materials
Water container
Capacity:45L
Water hose
Diameter:10 mm
Length:2 meters

14. Hose Clamp
Fit:for 10mm waterhose
Caster Wheels
Weightloadcapacity:150 kilograms
Wheel diameter:2 inches
PVC Pipe
Diameter:4 inches

15. Length:1 meter
For frame and housingof the vendingmachine
Goodlumber
Width:2 inches
Height:2 inches
LengthVariation (meter):1.3,1 & 1.72
Metal sheet
Thickness:1mm
DimensionVariation(meter): 1x 1.3, 1.3 x 1.8 & 1 x 1.8

16. GypsumScrew
Lengthvariation(inches):1,2 & 2 1/2