Flow

The ~~spice~~ liquid must flow!

Electronics and water don't usually mix - which is why liquid level sensing projects can be a little challenging. But we have a number of solutions that don't require the Gom Jabbar test. Check out our options of liquid solenoid valves, which are great for robotic gardening, aquarium, pool projects, or maybe terra-forming planets (still in R&D). Or if you need to measure liquid levels, we have eTapes of varying lengths, including ones with protective plastic casing.

Simple Water Detection Sensor with Digital Output

Product ID: 4965

Keep wet things wet and dry things dry by detecting when the dry things get wet by accident! This palm-sized cherry-red water sensor is simple and easy to implement in your wet-dry-sensing project. Usage is very simple: connect the minus (-) pin to ground, connect the plus (+) pin to 3 to 5V DC and then the output signal pin (S) goes to your microcontroller. The...

$1.95

5 in stock

Plastic Solenoid Valve with two threaded inlets and solenoid with two contacts

Plastic Water Solenoid Valve - 12V - 1/2" Nominal

Product ID: 997

Control the flow of fluid using the flow of electrons! This liquid valve would make a great addition to your robotic gardening project. There are two 1/2" (Nominal non-taped National Pipe) outlets. Normally, the valve is closed. When 12VDC is applied to the two terminals, the valve opens and water can push through. The valve has a gasket arrangement inside, so there...

$6.95

In stock

Liquid Flow Meter with two threaded inlets, and three-pin wire coming out

Liquid Flow Meter - Brass 1/2" Nominal Threaded

Product ID: 833

Measure liquid/water flow for your solar, computer cooling, or gardening project using this handy basic flow meter. This sensor sit in line with your water line, and uses a pinwheel sensor to measure how much liquid has moved through it. The pinwheel has a little magnet attached, and there's a hall effect magnetic sensor on the other side of the brass tube that can...

$24.95

In stock

Digital Liquid Sensor with three wires coming out

Optomax Digital Liquid Level Sensor - LLC200D3SH-LLPK1

Product ID: 3397

Electronics and water don't usually mix - which is why liquid level sensing projects can be a little challenging. You can DIY a sensor but keeping it clean and un-oxidized can be a pain. The Optomax Digital liquid level switches are a clever solution for when you need a small sensor to detect liquid/water: super easy to use and very durable too! Inside the plastic...

$24.95

In stock

Angled shot of clear turbine flow sensor.

Clear Turbine Water Flow Sensor with 3-pin JST

Product ID: 5066

Measure liquid/water flow for your solar, computer cooling, or gardening project using this handy basic flow meter featuring a fully clear plastic body. This sensor sits in line with your water line and uses a pinwheel sensor to measure how much liquid has moved through it. The pinwheel has a little magnet attached, and there's a hall effect magnetic sensor on the...

$6.50

In stock

Liquid Flow Meter with two threaded inlets, and two-pin wire coming out

Liquid Flow Meter - Plastic 1/2" NPS Threaded

Product ID: 828

$9.95

In stock

Brass Solenoid Valve with two threaded inlets and huge solenoid and two wires

Brass Liquid Solenoid Valve - 12V - 1/2 NPS

Product ID: 996

Control the flow of fluid using the flow of electrons! This liquid valve would make a great addition to your robotic gardening, aquarium, or pool project. There are two 1/2" (Nominal NPS) outlets. Normally, the valve is closed. When 12VDC is applied to the two terminals, the valve opens and water can flow. Unlike the plastic solenoid valve, this one does not have a...

$24.95

In stock

Long ruler-like flexible Tape Liquid Level Sensor

12" eTape Liquid Level Sensor + extras

Product ID: 464

The eTape Liquid Level Sensor is a solid-state sensor with a resistive output that varies with the level of the fluid. It does away with clunky mechanical floats, and easily interfaces with electronic control systems. The eTape sensor's envelope is compressed by the hydrostatic pressure of the fluid in which it is immersed. This results in a change in resistance that...

$39.95

2 in stock

12" Standard eTape Liquid Level Sensor with Plastic Casing

Product ID: 2656

This eTape Liquid Level Sensor is a solid-state sensor with a resistive output that varies with the level of the fluid. It does away with clunky mechanical floats, and easily interfaces with electronic control systems. What separates this from our other eTape Liquid Sensor is the hard plastic jacket that makes it less susceptible to damage. The eTape sensor's...

$59.95

15 in stock

Liquid Level Sensor with Plastic Casing inserted into glass with water

5" eTape Liquid Level Sensor with Plastic Casing

Product ID: 3828

This eTape Liquid Level Sensor is a solid-state sensor with a resistive output that varies with the level of the fluid. It does away with clunky mechanical floats, and easily interfaces with electronic control systems. What differentiates this from our other eTape Liquid Sensors is the hard plastic jacket that makes it less susceptible to damage. The eTape sensor's...

$59.95

17 in stock

Long ruler-like flexible Tape Liquid Level Sensor with loose header

8" eTape Liquid Level Sensor + extras

Product ID: 463

$39.95

3 in stock

ruler-like flexible Tape Liquid Level Sensor with four pins

5" eTape Liquid Level Sensor + extras

Product ID: 3827

$39.95

3 in stock

Long ruler-like flexible Tape Liquid Level Sensor with some extras

12" Chemical eTape Liquid Level Sensor with Teflon Jacket

Product ID: 1786

The Chemical eTape Liquid Level Sensor is a solid-state sensor with a resistive output that varies with the level of the fluid. It does away with clunky mechanical floats, and easily interfaces with electronic control systems. What separates this from our other eTape Liquid Sensor is the Teflon (FEP) jacket that is rated for use in chemical, petroleum, and food safe...

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