This Mini-PC is operated by the Deebian Wheezy. Udoo is an open hardware system on a low-cost platform. Thereon we run our web server, the database and other services which are performant provided with the quad-core processors and the SSD. To protect our climate we pay attention to a low power consumption of the server. The Udoo Quad requires about 7W with the SSD in continuous operation.
The DC-Fan of the Series DR MagLev of Sunon is based on the MagLev-Technologie and are fans with high Power, low voice level and long life time. This could be reached by an unobstructed use – no contact between shaft and bearing. With excellent rotation balance typical vibration can be stopped. The fan is also high temperature resistant and so the life time increases.
COZIR is an ultra low power (3.5mW4), high performance CO2 sensor, ideally suited for battery operation, portable instruments and HVAC. Based on GSS IR LED and Detector technology, and innovative optical designs, the COZIR offers the lowest power NDIR sensor available. Optional temperature, humidity and light sensing are available. COZIR is a third generation product from GSS – leaders in IR LED CO2 sensing.
Further information on this type of sensor can be found on http://www.CO2Meter.com
The MPXxx6115A series sensor integrates on-chip, bipolar op amp circuitry and thin film resistor networks to provide a high output signal and temperature compensation. The small form factor and high reliability of onchip integration make the pressure sensor a logical and economical choice for the system designer. The MPXxx6115A series piezoresistive transducer is a state-of-the-art, monolithic, signal conditioned, silicon pressure sensor. This sensor combines advanced micromachining techniques, thin film metallization, and bipolar semiconductor processing to provide an accurate, high level analog output signal that is proportional to applied pressure.
The DS18B20 digital thermometer provides 9-bit to 12-bit Celsius temperature measurements and has an alarm function with nonvolatile userprogrammable upper and lower trigger points. The DS18B20 communicates over a 1-Wire bus that by definition requires only one data line (and ground) for communication with a central microprocessor.
Radiation that drives photosynthesis is called photosynthetically active radiation (PAR) and is typically defined as total radiation across a range of 400 to 700 nm. PAR is often expressed as photosynthetic photon flux (PPF): photon flux in units of micromoles per square meter per second (µm-2 s-1, equal to microEinsteins per square meter per second) summed from 400 to 700 nm (total number of photons from 400 to 700 nm). While Einsteins and micromoles are equal (one Einstein = one mole of photons), the Einstein is not an SI unit, so expressing PPF as µm-2 s-1 is preferred. Sensors that measure PPF are often called quantum sensors due to the quantized nature of radiation. A quantum refers to the minimum quantity of radiation, one photon, involved in physical interactions (e.g., absorption by photosynthetic pigments). In other words, one photon is a single quantum of radiation.
SiC provides the unique property of extreme radiation hardness, near-perfect visible blindness, low dark current, high speed and low noise. These features make SiC the best available material for visible blind semiconductor UV detectors. The SiC detectors can be permanently operated at up to 170°C. The temperature coefficient of signal (responsivity) is also low, <0,1%/K. Because of the low noise (dark current, in the fA range), very low UV radiation intensities can be measured reliably. Please note that this device needs an appropriate amplifier (see circuit on following page). SiC photodiodes are available as unfiltered broadband devices or with optical filters providing UV-A, UV-B, or UV-C-only sensitivity, or erythemal action curve compliance.
Mechanically robust, chemical resistant and dew formation resistant, the digital humidity sensor with only 10.2 x 5.1 x 1.8mm size offers the widest application window and an optimal price performance ratio. Precisely calibrated, the HYT 271 delivers an accuracy of ±1.8% rH and ±0.2°C - ideal for sophisticated mass applications, industrial handheld devices and precise humidity transmitters. Like all representatives of the HYGROCHIP family, the sensor combines the advantages of a precise, capacitive polymer humidity sensor with the high integration density and functionality of an ASIC. The signal processing integrated in the sensor completely processes the measured data and directly delivers the physical parameters of relative humidity and temperature over the I2C compatible interface as digital values.
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Our project is thankfully funded by the Internet Privatstiftung Austria.
Our Hardware will be published under the CC BY-SA License.
The Software is licensed with the General Public License (GNU).