OD/F device

number of pieces	components	costs [$]	ordered from
1	arduino UNO R3	12.66
2	light to frequency sensor TSL 235R	5.90
1	display 2x16 l2C	18.97
2	LEDs	2.50
1	taster	5.23
1	filter slide	5.20
20	jumper-wire-cable	2.36
2	small breadboards	3.00
1	power supply	5.00
1	case	20.24
2	cuvettes-holder	15.95
-	odds and ends like header sockt/pins	2.52	-
-	total	99.53	-

OD device