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Camelback Water Level Indicator

Lonely Planet approved 4 sure

Camelback Water Level Indicator
‘camelback’ rucksacks are specially designed to contain a collapsible water bag with a tube and mouthpiece. Sadly with the water tank on your back it’s not easy to tell how much there’s left to drink. With our solar-charged level indicator though you’re good to go Into the Wild, come rain or snow.
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The BOM (Bill of Materials) is the technically exhaustive listing of parts and other hardware items used to produce the working and tested prototype of any Elektor Labs project. The BOM file contains deeper information than the Component List published for the same project in Elektor Magazine. If required the BOM gets updated directly by our lab engineers. As a reader, you can download the list here.
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Component list
Component List
Default: 5%, 0.125W, 0805
R1 = 820Ohm
R2 = 100kOhm
R3 = 820kOhm
R4 = 10kOhm
R5,R6,R7,R8,R9 = 3.3kOhm
P1 = 100kOhm trimpot, SMD
C1 = 100nF 5%, 50V, 0805
C2 = 270pF 5%, 50V, 0805
C3,C4,C5 = 1µF 10%, 16V, 0805
LED1,LED2,LED3,LED4,LED5 = LED, green, low current, 0805
IC1,IC2 = 74HC4060 (SOIC-16)
IC3 = XC6206P332MR (SOT23-3)
IC4 = MAX1551
Solar panel 5V, 150mW
4.2V cellphone Li+ battery
PCB 140375-1 V1.0
Two adhesive copper strips, length 15-20cm

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