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• Frequency: 32.768kHz
• Crystal

Banana connectors are a pretty standard type of connection inside electronic labs because they provide fast and firm connection.

Banana connectors are a pretty standard type of connection inside electronic labs because they provide fast and firm connection.

• Diameter: 4mm
• Color: red
• Male connector

Banana connectors are a pretty standard type of connection inside electronic labs because they provide fast and firm connection.

• Diameter: 4mm
• Color: black
• Male connector

Aligator clips are practical for quick connections during prototyping/testing. You can solder any type of wires to these clips.

Aligator clips are practical for quick connections during prototyping/testing. You can solder any type of wires to these clips.

Aligator clips are practical for quick connections during prototyping/testing. You can solder any type of wires to these clips.

Aligator clips are practical for quick connections during prototyping/testing. You can solder any type of wires to these clips.

KW12-3 is a standard microswitch – it’s activated by the external force on the lever. Releasing the force we deactivate it. This system is very quick and practical, it allows dynamic changes in the switch. The lever itself is able to rotate – it has a little wheel on the top. Microswitches like these are used in PC mouses, automobile industry, communication devices, microwave oven doors etc.

For the purpose of automation in working with plants, there is an electronic valve for the water (or other liquid?). If you need a way to control some fluid using a microcontroller, here it is! It is actually the electronic solenoid which when activated, the fluid passes through his pipe, and if not – will not. Accepts pipe diameter of1/2 and at the inlet has a filter for all the unwanted particles.

It does not contain the pump or even some additional electronics, so make sure to have an external pump or use faucet water with pressure which is large enough. Systems that have a reservoir at a higher altitude than the valve, or to be exact, that apply the principle of hydrostatic pressure will not work because the pressure will not be large enough.

• Voltage: 12V DC
• For pipes with a diameter of 1 / 2inch

• Dimensions: 78 x 60 mm

Electromagnetic lock allows you to lock the door by a microcontroller or an external system. This one can hold up to 60kg with its electromagnet, which is just enough to when used with doors of the appropriate weight. Ideally, it should be used on smaller doors, windows and drawers. It is activated, that is “locked” when it is supplied current.

It consists of two parts, piece of an electromagnet and the metal. Comes with all necessary screws for installation.

These magnetic door switch sensors are already seen, if not – then in old movies for sure where they were used as anti-theft devices, ie. alarm systems. In fact, it is a magnet and the reed switch inside a pair. When they are close to each other (recommended 13mm or less), reed switch closes. Connect it to Croduino / Arduino as an ordinary switch use the detection of open doors, windows, drawers, cupboards etc.

• Voltage: max. 200V, best used 5V Croduino/Arduino
• Max reed power: 100mA
• Max detection distance: 15mm, 13mm recommended
• Dimensions: 29 x 14 x 9mm
• Cable length: 30cm

The Raspberry Pi cable provides direct connectivity to the Raspberry GPIO port and then easily accesses all plug-ins or adapters.

thermocouple sensor is a temperature measuring device, with its range usually bigger than standard sensors. If you’ve ever bought a multimeter and got some kind of temperature sensor, that is the thermocouple.

25x Capacitor 1206 10uF.

Classic capacitor 0603 100nF 50V, tolerance 10%. Most often used as a decoupling capacitor.
It comes in a pack of 50 pieces.

Resistor 0603 10k ohm with precision of 5%.

Resistor 0603 1k ohm with precision of 5%.

This small sensor will measure the current that passes through his wire transformer and the information you get in return is in the form of a small stream. That small current will be measured as a voltage drop that is already built into this sensor. The sensor works on the principle of an open transformer. It’s not as complicated as it sounds. For more details, check out the datasheet.

Only one wire put through the hole!

This small sensor will measure the current that passes through his wire transformer and the information you get in return is in the form of a small stream. That small current will be measured as a voltage drop that is already built into this sensor. The sensor works on the principle of an open transformer. It’s not as complicated as it sounds. For more details, check out the datasheet.

Only one wire put through the hole!

Optocoupler 4N35 is a device that electrically (by light, not by electricity) separates the two parts of the circuit. That means, if a short circuit occurs  on one part of the circuit or any kind of other error that causes malfunction of components, there won’t be any malfunctions to the second part of the circuit because there is no way (since they separated by light) to transfer the error.

To sum it up, this optocoupler is very common and generally, it can be used for all applications.

Come on, everyone knows what the NE555 is! It is unlikely that we could make anything in our store without it, since it is inevitable in any kind of education, and is also able to solve the “time” problems in any type of assembly. It is a timer and can be used to create a pulse oscillator, delays …