Tiny and lightweight with high output power. Servo can rotate approximately 180 degrees (90 in each direction), and works just like the standard kinds but smaller. You can use any servo code, hardware or library to control these servos. Good for beginners who want to make stuff move without building a motor controller with feedback & gear box, especially since it will fit in small places. It comes with a 3 horns (arms) and hardware. Specifications • Weight: 9 g • Dimension: 22.2 x 11.8 x 31 mm approx. • Stall torque: 1.8 kgf·cm • Operating speed: 0.1 s/60 degree • Operating voltage: 4.8 V (~5V) • Dead band width: 10 µs • Temperature range: 0 ºC – 55 ºC

Water sensor brick is designed for water detection, which can be widely used in sensing rainfall, water level, and even liquid leakage. Water Detector / Sensor Connecting a water sensor to an Arduino is a great way to detect a leak, spill, flood, rain, etc. It can be used to detect the presence, the level, the volume and/or the absence of water. While this could be used to remind you to water your plants, there is a better Grove sensor for that. The sensor has an array of exposed traces, which read LOW when water is detected.

1.Output Current: 1.5A (min), 2.2A (typ) 2.Input-output voltage differential (VI-VO): 40Vdc (max) 3.Adjustable output voltage range: 1.2 ~ 37V 4.Operating temperature: -55 Celsius ~ 150 Celsius 5.Current output: 1.5A 6.Voltage Input: 4.2 ~ 40 V 7.Operating temperature: 0 Celsius ~ 125 Celsius 8.Characteristic frequency: 100MHz 9.Module size: 35.6 mm x16.8 mm 10.Input Method: VIN input is positive, GND Input Negative 11.Output: VOUT output positive, GND output negative

The MAX6675 performs cold-junction compensation and digitizes the signal from a type-K thermocouple. The data is output in a 12-bit resolution, SPI™-compatible, read-only format. This converter resolves temperatures to 0.25°C, allows readings as high as 1024°C, and exhibits thermocouple accuracy of 8LSBs for temperatures ranging from 0°C to 700°C. The MAX6675 is available in a small, 8-pin SO package.

It is a 75MM X 60MM solar cell. Which has 7.5V / 50MA rating.

A unipolar stepper motor has one winding with center tap per phase. Each section of windings is switched on for each direction of magnetic field. Since in this arrangement a magnetic pole can be reversed without switching the direction of current, the commutation circuit can be made very simple (e.g., a single transistor) for each winding. Typically, given a phase, the center tap of each winding is made common: giving three leads per phase and six leads for a typical two phase motor. Often, these two phase commons are internally joined, so the motor has only five leads.

A unipolar stepper motor has one winding with center tap per phase. Each section of windings is switched on for each direction of magnetic field. Since in this arrangement a magnetic pole can be reversed without switching the direction of current, the commutation circuit can be made very simple (e.g., a single transistor) for each winding. Typically, given a phase, the center tap of each winding is made common: giving three leads per phase and six leads for a typical two phase motor. Often, these two phase commons are internally joined, so the motor has only five leads.

Microchip has gone on to manufacture the PICkit 3, a variation of the PICkit 2 with the same form factor and a new translucent case. It features a faster 16-bit PIC24F processor and a wider voltage regulation range. There are some complaints of it not being as reliable as the Pickit 2. Both PICkit 2 and PICkit 3 have internal, switch-mode voltage regulators. This allows them, in the case of the PICkit 2, to generate voltages from 2.5 to 5 volts, or in the case of the PICkit 3, 2.5 to 5.5 volts, from a 5 V USB supply, at around 100 mA. Both have options for calibrating the output with a multimeter, for increased accuracy. Additionally, for some PICs, the MCLR programming voltage can be generated, at around 13 to 14 volts. This voltage is required to reprogram the flash memory.

PICkit 2 has a separate programmer/debugger unit which plugs into the board carrying the chip to be programmed, whereas the PICkit 1 was a single unit. This makes it possible to use the programmer with a custom circuit board via an In Circuit Serial Programming (ICSP) header. This feature is not intended[3] for so-called "production" programming, however. The PICkit 2 uses an internal PIC18F2550 with FullSpeed USB. The latest PICkit 2 firmware allows the user to program and debug most of the 8 and 16 bit PICmicro and dsPIC members of the Microchip product line. The PICkit 2 is open to the public, including its hardware schematic, firmware source code (in C language) and application programs (in C# language). End users and third parties can easily modify both the hardware and software for enhanced features. e.g. Linux version of PICkit 2 application software, DOS style CMD support, etc.