Description The LM35 series are precision integrated-circuit temperature devices with an output voltage linearly-proportional to the Centigrade temperature. The LM35 device has an advantage over linear temperature sensors calibrated in Kelvin, as the user is not required to subtract a large constant voltage from the output to obtain convenient Centigrade scaling. The LM35 device does not require any external calibration or trimming to provide typical accuracies of ±¼°C at room temperature and ±¾°C over a full −55°C to 150°C temperature range.

Features:

• Dual channel stereo output 3 w 3 w power Class D
• Works with 2.5V-5v power supply
• High amplification efficiency 85%
• can directly drive 4 Ω/8 Ω small speakers
• Good sound quality  & noise suppression
• Unique without LC filter class D digital power board
• Can use computer USB power supply directly
• Small Size, can easily fit in a variety of products

Note when using

• Input audio should be via sheilded wire for best performance.
• Use proper filtered power supply with good filter capacitors.
• Take care not to short speaker wires else IC will get damaged.
• Make sure power supply never execeds 5.5V else IC will get damaged. Use regulated power supply.

This module described here is based on ADS9850, a CMOS, 125MHz, and Complete DDS Synthesizer. The AD9850 is a highly integrated device that uses advanced DDS technology coupled with an internal high speed, high performance, D/A converter and comparator, to form a complete digitally programmable frequency synthesizer and clock generator function. All the external components which are needed are integrated on the board and the designer don’t need to care more about the detailed design of ADS9850. The designer only needs to add the power and control signals to this module to driver this module

Specifications: -5V solid state relays 240V 2A, output with resistive fuse 240V 2A. -2.54cm pin and blue KF301 terminals to the control line is more convenient. -The input power supply: 5V DC (160MA) -The input control signal voltage: 0-2.5V low state relay OFF; -3.3-5V high state relay ON -Size: 57 x 55 x 20 mm(L x W x H)

K150 is the latest of a low-cost high-performance PIC programmer, support most popular PIC chip burning Write, read, encryption and other functions, use a high-speed USB communication, ultra-fast programming, programming quality is stable and reliable. (Speed Average PICSTART 3-5 times) fully automatic programming verification; with 40pin DIP programmer seat, direct programming 8pin-40pin DIP chip; outside 8pin-40 pin chip software compatible board the ICSP interface online download; The Windows98 and Windows2000/NT, Windows XP operating system; software will constantly with the PIC's new device Upgrade. Master chip retains DIP package with seat!

A pH sensor is a scientific instrument that measures the hydrogen-ion concentration (orpH) in a solution, indicating its acidity or alkalinity. The pH sensor measures the difference in electrical potential between a pH electrode and a reference electrode.

Sensitive material of MQ-4 gas sensor is SnO2, which with lower conductivity in clean air. When the target combustible gas exist the sensors conductivity increases higher along with the gas concentration rising. MQ-4 gas sensor has high sensitivity to Natural gas, Methane and could be used to detect both Methane and Propane. The sensor could be used to detect different combustible gas especially Methane, its low cost and suitable for different application. Features: -High sensitivity to Combustible gas in wide range. -High sensitivity to Natural gas Methane, Coal gas, CO etc gas. -Fast response. -Wide detection range. -Stable performance, long life, low cost. -Simple drive circuit.

The ML8511 sensor breakout is an easy to use ultraviolet light sensor. The MP8511 UV Sensor outputs an analog signal in relation to the amount of UV light it detects. This can be handy in creating devices that warn the user of sunburn or detect the UV index as it relates to weather conditions. This sensor detects 280-390nm light most effectively. This is categorized as part of the UVB (burning rays) spectrum and most of the UVA (tanning rays) spectrum.

Features: -With relay output, this module is used to detect the humidity and control related the device power directly. -This product make use of HR202 humidity sensor. -The comparator outputs drive relays directly. It connects to 220V AC or other devices. -With leads, sensor interface can be installed with pin. -It's easy to install with 4 0.3cm fixing bolt hole. -When ambient humidity exceeds the setting threshold value the relay sucks and shuts, what's more, the common terminal connects to the start. -If the ambient humidity below the setting threshold value, the situation will be counter. -Common, normally open and normally closed the three ports are equivalent to a dual-control switch. -When the relay coil is electrified, the common will connect to the normally open, otherwise, the common will connect to normally closed.

Arduino Adapter Shield Turn Nano v3.0 to Uno can turn your Arduino Nano into a normal style Arduino Uno, so you use it not only as arduino nano itself, but also as a Uno with more standard shield.