tetralink technologies

?Key Features :

1. Model : KY-040.
2. Type : Incremental Encoder.
3. Cycles per revolution (CPR) : 20.
4. Working voltage : 0 ? 5V.
5. Material : PCB + Brass.
6. Weight : 10 gm.
7. Size : 32 x 19 x 30 mm.

?Key Features :

1. Tiny and lightweight with high output power. The servo can rotate approximately 180 degrees (90 in each direction) and works just like the standard kinds but smaller.
2. You can use any servo code, hardware, or library to control these servos.
3. Good for beginners who want to make stuff move without building a motor controller with feedback & gearbox, especially since it will fit in small places. It comes with 3 horns (arms) and hardware.

?Key Features :

1. • small size, easy to use;
   • low voltage, low power consumption;
   • high accuracy;
   • strong anti-jamming;
   • integrated with wire enclosed waterproof probe, suitable for wet, harsh measurement occasions.

?Key Features :

1. PCB installed inside of?aluminum alloy U disk?shell, portable, safe and reliable!
2. Interface definition?directly marked on the shell, clear, convenient and practical!
3. 5V, 3.3V offers at the same time, allowing you to program your target board with both 5V and 3.3V
4. Shell characters using laser engraving, never fade off! Permanent clarity!
5. 500MA internal resettable fuse,?complete protection of your expensive computer motherboard!
6. Red and blue color LED indicator, allowing you to always observe ST-LINK V2 working condition!
7. With 4 DuPont line, so you can easily respond to different target board line order!
8. Use anti-static bag packaging.

?Key Features :

1. DIY Projects
2. Battery-operated toys
3. Disk drives Steel rolling?mills?Paper
4. Machines Medical equipment
5. Radio-controlled aircraft
6. Automobiles Drive systems Positioning
7. Industrial and consumer actuators Winches Robotics Mixers
8. Robotic projects

?Key Features :

1. • Modes?Toggle or switch.
   • Operating current @VDD=3V, no-load, SLRFTB=1.
   • The response time max about 60mS at fast mode, 220mS at low power mode @VDD=3V.
   • Sensitivity can adjust by the capacitance(0~50pF) outside.
   • Have two kinds of sampling length by pad option(SLRFTB pin).
   • Stable touching detection of the human body for replacing traditional direct switch key.
   • Provides Fast mode and Low Power mode selection by pad option(LPMB pin).
   • Provides direct mode toggle?mode by pad option(TOG pin), the open-drain mode by bonding option, OPDO pin is an open-drain output, Q pin is CMOS output.
   • All output modes can be selected active high or active low by pad option(AHLB pin).
   • Have the maximum on-time 100sec by pad option(MOTB pin).
   • Have external power-on reset pin(RST pin).
   • After power-on have about 0.5sec stable-time, during the time do not touch the keypad, And the function is disabled.
   • Auto calibration for life.
   • Re-calibration period is about 4.0sec when the key has not to be touched.

Key Features:

• NEW IMPROVEMENT: Clear prints on the female header connector, more precise and easier to use the wire.
• The ELEGOO UNO R3 BOARD now uses an ATMega16U2 instead of the ATMega8U2 chip. Faster transfer rates and more memory.
• Control using ATMEL ATMEGA328P chip(the same with Arduino UNO R3)
• 100% compatible with the Arduino IDE and RoHS Compliant
• The Uno board can be powered via the USB connection.
• The Uno board can be powered with an external power supply.
• Excellent welding and production quality to make sure satisfied customer experience
• The RX and TX LEDs on the board will flash when data is being transmitted via the USB-to-serial chip and USB connection to the computer.
• We have always cared about the customer experience and improve the product function details.

?Key Features :

1. • Dimensions: 28 x 14 x 13 mm(LxWxH).
   • Weight: 4 gm.
   • Input Voltage range: DC0 to 25 V
   • Voltage detection range: DC 0.02445 V to 25 V
   • Analog Voltage resolution : 0.00489 V
   • Output Interface : ?+ ? connected 5/3.3V, ?-? connected GND, ?s? connected Arduino AD pins
   • DC input interface: red terminal positive with VCC, negative with GND
   • You can also use the IICLCD1602 LCD to display voltage.
   • By 3P connector, connect this module with the expansion of board Arduino, not only makes it easier for you to detect voltage battery.

?Key Features :

1. 1. 1. ABS flame retardant housing is avirulent and environmental protective, long service life and will not discolor or be out of shape
      2. Wide temperature control range from -50? to 110? and high-temperature control precision of 0.1?
      3. Can be installed directly or embedded in industrial control equipment panel, convenient and quick
      4. Widely used in the hatching area, equipment case, air conditioning system, temperature control protection, and other fields
      5. The probe used stainless steel material shell and resin sealing treatment, waterproof and does not rust

?Key Features :

1. • Model: YF-S201
   • Sensor Type: Hall effect
   • Working Voltage: 5 to 18V DC (min tested working voltage 4.5V)
   • Max current draw: 15mA @ 5V
   • Output Type: 5V TTL
   • Working Flow Rate: 1 to 30 Liters/Minute
   • Working Temperature range: -25 to +80?
   • Working Humidity Range: 35%-80% RH
   • Accuracy: ?10%
   • Maximum water pressure: 2.0 MPa
   • Output duty cycle: 50% +-10%
   • Output rise time: 0.04us
   • Output fall time: 0.18us
   • Flow rate pulse characteristics: Frequency (Hz) = 7.5 * Flow rate (L/min)
   • Pulses per Liter: 450
   • Durability: minimum 300,000 cycles
   • Cable length: 15cm
   • 1/2? nominal pipe connections, 0.78? outer diameter, 1/2? of thread
   • Size: 2.5? x 1.4? x 1.4?