After switching the power supply on, the LCD should announce that the three sensors have been detected and if this is the case, the circuit should function as intended. Not that much is likely to go wrong during the assembly, but nevertheless. The firmware is already programmed into the processor board and although the assembly instructions continue all the way to screwing the enclosure closed, I consider it a better idea to test whether the circuit works properly first, before closing the lid on the enclosure. A cosmetic flaw, but for the operation or sturdiness of the Earth Listener it fortunately does not matter if the board is held by only two mounting points. That is because two of the mounting holes in the ATmega2560 board are too close to the connectors, and it is not possible to insert the bolts without using force. In the assembly instructions there is the comment that the processor board can also be mounted in the enclosure using only two instead of four bolts. look at these carefully, everything will be assembled very quickly and will be ready for use. The English-language instructions are clear, well-illustrated and with more than sufficient photos, and if you follow c.q. Otherwise, nothing else is required (no: there is nothing to solder). If you need to, you can use pliers to hold the stand-offs, but just holding them with your fingers is probably enough. On this page are also links to the user manual and a document about the measuring results from the CCS822 (All about Values), bit I will get back to that later.įor the assembly of the Earth Listener, the kit includes a 2.5-mm hex wrench for the bolts. I got off on the wrong foot by searching in the section ‘downloads’, but the instructions for the assembly can be found by clicking the link ‘manual’ and subsequently selecting ‘2. A great number of options for such a relatively small box, which does have to be assembled first, before it can be used.Īs is often the case these days, the documentation is only available online, from the website of the manufacturer. ![]() The Arduino software in the Earth Listener is open source and the sensor shield design offers the option of adding up to six more sensors yourself. ![]() ![]() Furthermore, the circuit contains an AS3935 lightning detector that gives an estimation of the distance to the centre of the storm within a radius of 20 km and gives an alarm when lightning is detected. This module measures temperature, humidity, air pressure, eCO2 and TVOC (Total Volatile Organic Compound) and indicates these values on a TFT touch screen or stores them on an SD card. The description of the product, however, makes things much clearer: ‘The Earth Listener is an Arduino-based sensor module that can measure multiple environmental variables in order to indicate the air quality’. Sometimes a project is given such a name that you (read: me!) do not immediately know what it represents or what it does, an ‘Earth Listener’ for example.
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