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It consists two parts: an IR emitting LED and an IR sensitive phototransistor
The accuracy and detection distance can be adjusted using the onboard poteniometer
2m（related to the card or the environment） Working mode： Active mode Passive mode Answer mode (Not recommend) Interface Voltage： DC +5V Data interface： USB to virtual keyboard input USB to virtual serial port(Customized) Working environment Working Temp： -20℃～55℃ Storage Temp： -40℃～85℃ Physical parameter Size： 107mm×107mm×23mm Net/gross Weight： 150g/250g Accessories Cable： USB cable SDK： Free SDK
Shaft rotation speed detection
Use CSR popular buletooth chip
GT2 Closed Timing Belt (380mm Length- 6mm Width) lipo battery connector It consists two parts: anProduct Description Timing belts are a fantastic way to transfer rotational motion (from a stepper motor) into linear motion (along a rail) and these GT2 belts are excellent for the task. They have a special profile with rounded teeth which reduces slippage. Often used for precision 3D printers and CNC machines. This belt is 350mm long a 2mm tooth pitch and is 6mm wide. It comes in a loop but you can of course cut it down if you need a shorter length.
