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1. Feature & Application: * Full range temperature compensated * Relative humidity and temperature measurement * Calibrated digital signal *Outstanding long-term stability *Extra components not needed * Long transmission distance * Low power consumption *4 pins packaged and fully interchangeable 2. Description: DHT22 output calibrated digital signal. It utilizes exclusive digital-signal-collecting-technique and humidity sensing technology, assuring its reliability and stability.Its sensing elements is connected with 8-bit single-chip computer. Every sensor of this model is temperature compensated and calibrated in accurate calibration chamber and the calibration-coefficient is saved in type of program in OTP memory, when the sensor is detecting, it will cite coefficient from memory. Small size & low consumption & long transmission distance(20m) enable DHT22 to be suited in all kinds of harsh application occasions.
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Description PWM output, you can set the frequency, duty cycle; Frequency is divided into four ranges, automatic switching: 1. XXX (no decimal point): the smallest unit is 1Hz, the value range of 1Hz ~ 999Hz; 2. X.XX (decimal point in the hundred) the smallest unit is 0.01Khz, the range of 1.00Khz ~ 9.99Khz; 3. XX.X (decimal point in ten): the smallest unit is 0.1Khz; value range of 10.0KHz ~ 99.9KHz 4. X.X.X (decimal point in ten and hundred): the smallest unit is 1Khz; value range 1KHz ~ 150KHz e.g. frequency display: 100 indicates PWM output 100Hz pulse; 1.01 indicates PWM output 1.01K pulse; 54.1 indicates that the PWM output has a pulse of 54.1 kHz; 1.2.4 indicates that the PWM output is 124 kHz pulse; Duty cycle range: 0 ~ 100%;
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Power dissipation:1w Power supply: 1.1-3.6V DC – typically 3.3V DC Resolution: 16bit Temperature measuring range: -40-125 ° C Temperature measurement resolution: 0.01 ° C Temperature measurement accuracy: ± 0.2 ° C Humidity measurement range: 0-100% RH Humidity measurement resolution: 0.01 RH Humidity measurement accuracy: ± 1.8% RH
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This is an infrared based sensor array which can be used in advanced line following and grid navigation robots. The array has 8 individual sensors placed next to each other. Each sensor has its own digital output and can sense the presence of a line and indicate it with a 5V logic output. On reading the the digital state of the eight sensors, the user can not only detect the line but also get to know how far the center of the robot is from the line. When all sensors sense the line, the robot is on an intersection. Features
- Uses 8 sensors for best resolution.
- Great useful in building fast line following and grid navigating robots.
- Input Voltage: 5V DC.
- Comes with easy to use digital outputs that can be connected directly to microcontrollers.
- The array has mounting holes of 3mm diameter for easy mounting.
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Bee Adapter is a compact USB to serial adapter equipped with BEE (20pin 2.0mm) sockets. With integrated FT232RL IC, It can be used for programming or communicating with board which basic Arduino but without USB interface,like Sniffer Nano. On the other hand, you may connect your PC to various wireless applications via the BEE compatible modules. The adapter also support XBee module interface.
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Features: >The smallest Arduino Compatible breakout board measuring less than 1 square inch! >Support for the Arduino IDE 1.0 (OSX/Win/Linux). >Power via USB or External Source: 7V - 35V DC (12v or less recommended). >Automatic selection between 5V USB and External Source for Power. >On-board 500ma 5V Regulator. >On-board microUSB port for easy programming & power. >6 I/O Pins: 2 pins (P3 & P4) are tied to USB (This means if your program actively communicates over USB they will be in use. If your program does not actively communicate over USB you can use all 6 I/O pins after programming via USB). >8k Flash Memory (about 6k after bootloader). >Communication Protocols Supported: I2C and SPI T. >PWM on 3 pins (more possible with Software PWM). >ADC on 4 pins. >Power LED and Status LED on-board.