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Jumper wires can be used for pin extension of the experiment board, adding experimental items, and the like. It can be connected very securely to the pins, eliminating the need for soldering and allowing quick circuit testing.

Our kit includes 65pcs male to male jumper wires, 20pcs male to female dupont wires, and 140pcs solderless jumper wires. which are completely adequate for various experiments.

The 74HC595 consists of an 8−bit shift register and a storage register with three−state parallel outputs. It converts serial input into parallel output so that you can save IO ports of an MCU. The 74HC595 is widely used to indicate multipath LEDs and drive multi-bit segment displays. "Three-state" refers to the fact that you can set the output pins as either high, low or "high impedance." With data latching, the instant output will not be affected during the shifting; with data output, you can cascade 74HC595s more easily.

The 4N35 is a 4-terminal universal optocoupler that blocks the electrical connection between the signal source and the receiver of the signal, which effectively blocks electrical connections and interference. Commonly used in signal isolation transmission, switching power supply feedback control and so on. Common circuits include TV power supply parts (remote control switch, voltage feedback control), switching power supply, electric vehicle charger and many other aspects.

An active buzzer will generate a tone using an internal oscillator, so all that is needed is a DC voltage. A passive buzzer requires an AC signal to make a sound. It is like an electromagnetic speaker, where a changing input signal produces the sound, rather than producing a tone automatically.

To identify them, if you apply a DC voltage to them and it buzzes, it's an active.As far as commands go if you want to control the pitch, you would need a passive buzzer.

SW-520D tilt is a commonly available roller-ball type tilt sensor which consists of two conductive elements (poles) and a conductive free mass (rolling ball), encapsulated in the same case. The switch would be in the "off position" in the horizontal positon, "on positon" when raised to 15-90 degree or shakes. When the OFF end of the switch is lower than the horizontal angle by 15 degrees, it is difficult to trigger conduction when shaking. This switch is suitable for triggering small current circuits and is not suitable for power switches.

LED Segment Display tube is an electronic device that can display numbers and other information. The glass tube comprises an anode made of metal wire mesh and a plurality of cathodes. Most cathodes of nixie tubes are digital in shape. When a cathode is charged, the nixie tube will emit color light, which is generally orange or green, depending on the gas in the tube.

Bright red display for 4 characters with 7 segments and colon each.

Economical energy consumption through LED display.

Easy programming through open source libraries.

Bright red display for 4 characters with 7 segments and colon each.

Economical energy consumption through LED display.

Easy programming through open source libraries.