Camelback Water Level Indicator

Lonely Planet approved 4 sure

‘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.

This is a MEMBER ONLY article. You need a subscription to read this article.

Benefits of a subscription

Unlimited access to online Member Only articles
3 new editions Elektor Magazine (digital)
More than 5000 Gerber files
20% member discount on e-books (at elektor.com)
10% member discount on Products (at elektor.com)

View the offers
Available from €5.33 per month.

What is Elektor Exclusive?

Materials

www.elektor-labs.com

Siphonic Rain Gauge

PCB PDF

Components

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.
Want to learn more about our BOM list? Read the BOM list article for extra information.

Download the BOM list

Component list

Component List
Resistors
Default: 5%, 0.125W, 0805
R1 = 820Ohm
R2 = 100kOhm
R3 = 820kOhm
R4 = 10kOhm
R5,R6,R7,R8,R9 = 3.3kOhm
P1 = 100kOhm trimpot, SMD
Capacitors
C1 = 100nF 5%, 50V, 0805
C2 = 270pF 5%, 50V, 0805
C3,C4,C5 = 1µF 10%, 16V, 0805
Semiconductors
LED1,LED2,LED3,LED4,LED5 = LED, green, low current, 0805
IC1,IC2 = 74HC4060 (SOIC-16)
IC3 = XC6206P332MR (SOT23-3)
IC4 = MAX1551
Miscellaneous
Solar panel 5V, 150mW
4.2V cellphone Li+ battery
PCB 140375-1 V1.0
Two adhesive copper strips, length 15-20cm