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60 Kinds Of Rack And Pinion Gear Bag
60 kind of gears and pinions kit.
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This is a normally closed G1/2 12VDC electric solenoid valves with barbed inlet and outlet ports, great for projects involving low viscosity fluid control. You can find it ubiquitous on applications like automatic faucets, foot operated faucets, drinking fountains etc.
This is a light weight, high energy density polymer lithium battery. It outputs a nominal 3.7v at 2500mAh, including built-in protection against over voltage, over current, and minimum voltage. It comes terminated with a standard 2-pin JST connector-2.54 mm spacing between pins. Please do not attempt to charge these with anything but a specialized Lithium...
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18650 Universal Dual Battery Charger For Rechargeable Batterie USB
Mainly used in Air Conditioner Louver , Small Cooling/Heating Fan etc., Stable and all technic parameters are qualified for national electronic standard of SJ/T10689-95
This is a splittable 40 pin male-female jumper wire, it is super flexible, can be transformed from 1-40 pin jumper wire. With some of these, you will no need to worry about the jumper wires you got before do not fit your project, just split it and go.
Simple micro switch that can be used as a limit switch, as a drawer switch or whatever you'd like. It even support higher current loads, so you can switch motors or high power leds with it (hint hint).
Electronic brick of tilt switch can be connected to analog I/O port and used in tilt sensor for smart car or robot. When the sensor is in the horizontal position, the output is high level; when the sensor rotates counterclockwise to form an angle of more than 15 ° with the horizontal line, the output is low level.
Design a clock, timer or counter into your next project using this pretty 4-digit seven-segment display. These bright crisp displays are good for adding numeric output. Besides the four 7-segments, there are decimal points on each digit and an extra wire for colon-dots in the center (good for time-based projects) and a top right hand dot which could be...