MQ-135 module is widely used in air quality control equipments for buildings/offices, are suitable for detecting of NH3,NOx, alcohol, Benzene, smoke,CO2 ,etc

• Wide detecting scope
• Fast response and High sensitivity
• Stable and long life
• Simple drive circuit

Detection method using low temperature cycling (1.5V heating) to detect carbon monoxide,

• High quality double panel design
• Power and TTL signal output indication
• Has better sensitive detection for carbon monoxide
• Has a long service life and reliable stability
• Suitable for the detection of carbon monoxide, gas, etc

TB6600 multi-axis CNC stepper motor driver controller is suitable for making automation equipment, like CNC machine and 3D printer. Using the TOSHIBA TB6600 driver chip makes the controller runs effectively.

• The maximum output of 4.5A current, current stepless adjustable, stepper motors can be driven at the same time.
• Suitable for NEMA17, NEMA23 stepper motor.
• 12V power supply can be used for MACH3 interface board.
• Cost effective, high performance and installation convenient.

SainSmart bench vise is famous for its multi-functional design. Double clamps construction can help you stabilize different shapes of item. Both vise body and clamps can be rotated up to 360°.It can be attached to the table up to 1.7 inch thick that you can work almost everywhere you want.

• Double clamps design, two types of jaws, can stabilize various shapes of workpiece, e.g. triangular, circular, rectangular, and polygonal.
• Both vise body and clamps can be rotated up to 360°. It is convenient to adjust the optimal position you want.
• Made of carbon steel, strong and durable. The diamond pattern on the clamps allows the object to be held firmly.
• It can be install on the workbench easily just by spinning one screws.

This is a music spectrum LED display with 6 different display modes, 3 color combinations which will switch automatically according to the intensity of music.

• It has great sensitivity and sense of rhythm, also has better visual effect.
• Three different colors of lights. Different modes can be switched by button. It displays both automatically and in a fixed type of spectrum.
• Plug and use. No need to programm, just connect the kit to your audio system and it will display according to music.
• MS3264 Dual color dot matrix spectrum is widely used in many fields such as KTV, automobile, DIY amplifier audio system and home decoration etc.

The Sain Smart Nano for Arduino is a surface mount breadboard embedded version with integrated USB. It is a smallest, complete, and breadboard friendly.

• Automatic reset during program download
• Power OK, blue LED, Green (TX), red (RX) and orange (L) LED Auto sensing/switching power input
• Small mini-B USB for programming
• Serial monitor ICSP header for direct program download
• Standard 0.1" spacing DIP (breadboard friendly)
• Manual reset switch Power: The Nano can be powered via the mini-B USB connection, 6-20V unregulated external power supply (pin 30), or 5V regulated external power supply (pin 27). The power source is automatically selected to the highest voltage source.

The Sain Smart Nano for Arduino is a surface mount breadboard embedded version with integrated USB. It is a smallest, complete, and breadboard friendly.

• Automatic reset during program download
• Power OK blue LED on the bottom
• Green (TX), red (RX) and orange (L) LED
• +5V to AREF jumper
• Auto sensing/switching power input
• Small mini-B USB for programming and serial monitor (cable not included)
• ICSP header for direct program download
• Power OK blue LED on the bottom
• Standard 0.1” spacing DIP (breadboard friendly)
• Manual reset switch

PETG filament is a close cousin to PET (Polyethylene terephthalate) filament. It's the perfect filament to combine strength and flexibility.

• PETG filament has minimal shrinkage and warping
• The filament has easy adhesion, so it can be printed on acrylic, glass, polyimide (Kapton) tape, blue tape, and others
• Has good flexible strength more than ABS filament
• It has great chemical resistance with good acidic and alkalic resistance
• Environmentally friendly and recyclable