Team:Aachen/Notebook/Engineering/WatsOn

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Software

If you want to create your own WatsOn at first check the following list of necessary devices.

Table 1: Needed number of pieces, components and costs for building your own measurement device

number of pieces	components	costs [$]
1	filter slides (medium yellow 010, sally green 505)	5.17
1	arduino UNO R3	11.65
1	2-channel relay shield	3.46
40	jumper-wire cable	2.99
1	40er male header (10-Piece Pack)	2.72
1	40er female header (10-Piece Pack)	2.60
1	circuit board	2.99
1	HDMI cable	1.87
1	7 port USB hub	6.71
1	WLAN USB stick	5.35
1	USB mouse and keyboard	12.50
1	case acrylic glass XT 6mm~0.5²	50.65
1	spray paint for acrylic glass	6.54
1	Raspberry Pi model B board	35.00
1	Raspberry Pi camera module	25.00
1	7” display	50.50
1	8-segment display	3.86
2	digital temperature sensor DHT-22	7.50
1	aluminum block 100x100x15 mm	14.23
1	Peltier heater 12V 60W	4.49
1	power supply	32.89
6	superflux LED 480nm	7.50
16	LED 450nm	7.50
2	Resistor 40 Ohm	0.30
4	Resistor 100 Ohm	0.60
1	cupboard button	1.24
-	total	309.45

You can find more economical information for WatsOn and the project on our Economical View page.

Wiring of our device

	Start building your own WatsOn by assembling the base plate, the sides and the interior wall.
	Fix the Peltier heater on the back of the aluminum block and place it in the hole of the interior wall. Arrange the 4x4 450nm LEDs and the 2x3 480nm LEDs
	Assemble the camera holder with the camera and the corresponding filter slide on the lower part. Over the camera you can place the temperature sensor for measuring the indoor temperature. Finally put the fan on the back of the camera holder.
	Connect the electronic components on the outside and the inside according to the wiring diagramm.
	Put together the drawer.
	Position the front panel and insert the drawer.
	Place the temperature sensor for the aluminium block temperature directly on the block and put the back panel in front of it.
	Setup the power supply and connect all devices to either 5V or 12V.
	Mount the device on top of the power supply casing. Add the display and apply some stickers to enjoy your custom-made WatsOn.