5.1 3D MODELS

5.1.1 Coin Detection Unit

5.1.2 Rotational unit

5.1.2 Casing

5.2 Circuit Design:

Rotational Unit

5.2.1 Detection and Rotational Unit

5.2.2 Indication Unit

5.3 Flowchart

5.3.1 Coin Detection Unit

Rotational Unit

Indication Unit

5.4 Bill of Materials

Coin Detection Unit

SI NO	SUBSYSTEMS	PARTS	MATERIAL	DESCRIPTION OF PART	QUANTITY REQUIRED
1	Coin detection unit	coin box	wood	10cmx10cmx10cm , Hollow box with a hole to insert the coin	1
		Motion(coin) detector		PIR sensor	1

Rotational Unit

SI NO	SUBSYSTEMS	PARTS	MATERIAL	DESCRIPTION OF PART	QUANTITY REQUIRED
1	Rotaional Unit	Gears	Plastic	thickness=5mm R=13.75mm r=3mm	2
		Thread	Steel	thickness = 1mm length =9.3cm	2
				thickness = 1mm length = 7.3cm	2
				It has two holes at the end of diameters are 0.155 and 0.130 respectively
		DC motor controller	----	Arduino UNO	1
		Actuator	----	DC motor	1
		Gear stand	Wood	It contains 2 stand to support gears	1
				and 1 stand to support the DC motor
				of dimensions 6cmx1cmx1cm and
				6cmx2.062cmx2.053cm respectively
		Case	Acrylic sheets	All parts of rotational unit are held together in a case (hollow cube)
				It has a hole to connect the gears and dolls, the dolls are connected to
				the stands on the case
		MOSFET	----	Voltage regulator	1
		Dolls	-----	thickness=1mm length =3.6cm	2
		Bolts	-----	The gear stand and the base of the case are connected using bolts	4

INDICATION UNIT

SI NO	SUBSYSTEMS	PARTS	MATERIAL	DESCRIPTION OF PART	QUANTITY REQUIRED
1	Indication Unit	Display	------	LCD screen	1
		Push button	---	To start and edit timer on LCD screen	4
		Resistance regulator	----	Potentiometer	1
		Input controllers	-----	Push button	4
		Output	-----	Buzzer	1