The current testbed deployment provides some degree of device heterogeneity by integrating two different type of IoT experimentation nodes. The deployment is mainly based on a largely utilized TelosB experimentation platform (170 nodes) and to a smaller extend of XM1000 devices from Advanticsys (80 nodes). In the following we will mainly focus on
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the Telos B based IoT experimentation nodes, as they are based on a custom made sensing units. The XM100 are used out of the box and are equiped with the default sensor boards (temperature, light and humidity). More details on the XM1000 can be found here: Advanticsys XM1000. The sensor node platform is an off-the-shelve TelosB mote manufactured by XBow Telos B Datasheet. The platform is one of the most popular one in the WSN community and wide support for TinyOS and Contiki operating systems are available. The TelosB provides the following main features: Similar characteristics and the support for TinyOS are available on the XM1000 with the addition of a larger program space (116KB with respect to the 48KB provided by TelosB) that makes this platform more suitable for experimentation with Over-the-Air reprogramming solutions. The energy meter is an off-the-shelve energy meter from Plogg international. It is interfaced to the sensor node platform via a small interfacing board. The energy meter can be read with a maximum frequency of once every two seconds. The energy meter allows the meassurement of the following characterstics from appliances connected to it: The multimodal sening unit is based on a custom designed board. It is able to detect the following modes: ambient light and noise levels, ambient motion, temperature and vibration. The circuit of the board design and the PCB layout are presented in the figures below....
This project fits more for custom made battery casing that can have more space to hide things inside. This switch with few alterations can be used for any other project as well but is designed based on e-bike needs! This project use a clever functionality of....
The circuit described here uses ultrasonic oscillations and operates based on the propagation velocity of these oscillations in the air. Thus, we can easily determine the distance of two points if the time within which the wave travels this distance is....
Sometimes the precious metals are hidden too deep and are not detected except with complicated devices. In many cases, however, small pieces of precious metal buried near the surface can be detected by relatively simple means. Everyone is very attractive to....
Many times for various reasons we forget or can not water the plants that we have in our homes. And many humidity sensors units just notify us with a beeping sound or with a flashing light, that the pot needs watering. But what if we are away from home? This....
The principle behind a metal detector is really very simple. Proof of this is the circuit that follows, in which it proves that the construction of a metal detector can be done in the minute, with few components that we find very easily everywhere. With the....
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In the past the sounding (sea bottom measurement) was done with the "bullet", that is, with a heavy lead object that the seamen plucked into the sea hung from a calibrated rope. As soon as the "bullet" reached the bottom, the depth appeared directly from the....
This Amplifier was designed to have the following specifications: Distortion less than 0.1% at full power of 100W even at 20KHz. Power has to be attributed to an extended bandwidth. The output transistors must be protected against short circuits. The power....
A series of LEDs serve to alert the gardener when plants need water. Using two conventional digital integrated LEDs and a series of LEDs, we make a very useful device for gardening. The device detects the amount of water in the pot and alerts the grower.....
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