The powersupply should output 5VDC and should be able to supply at least 0,4A. The powersupply needs to be low noise (<200mVp-p ripple and noise). The following powersuplies should be suitable for many applications: Recom RACM18-05SER/W – IP68, compact Meanwell GS05E-USB – Wallwart, USB A output connector Meanwell IRM-30-5ST – Enclosed/insulated industrial PSU Note: Flip […]
For indoor or testing any USB A male to USB B male cable can be used, make sure the cable length is below 2 meters. For outdoor applications sealed USB cables/connectors are needed. The USB connector used in our sensor is the Conxall DCP-USBBT-USBA, this connector facilitates sealed connections.The corresponding sealed off the shelf cable […]
Please note that the battery charge state cannot be calculated very accurately based on the voltage alone. However, you can use it to estimate the state of charge or the battery health. This is because the voltage vs. charge curve is not linear, and because the battery is being charged during the day. The latter […]
Sand particulates shouldn’t be a problem, sand will wash off of the panel by rain.
Yes, the ‘’sweet spot’’ for best performance is around 20 degrees Celsius, but the battery has been oversized to account for temperature variations. Battery capacity is reduced at colder temperatures, but there should be enough headroom (extra capacity) for normal operation at temperatures to around -10 °C. At higher temperatures, aging rate is increased. Even […]
Most of our sound sensors are installed in countries with a lower average temperature, like Norway and Finland. In warmer countries like Italy, including the summer period, we haven’t experienced any problems with heat.
We use a lead acid battery (Yuasa NP12-6), because these batteries perform better in cold weather than lithium-ion. Our battery must be able to charge and discharge at very low and high temperatures, including below zero.
Set the power switch on the PCB to “USB” and use a regular phone charger to power the Ranos dB. In this switch position (“USB”), the battery is switched off.
No, this is not possible. It is, however, possible to power (and run) the Ranos dB by USB. To do this, the power switch on the PCB must be set to “USB”.
The energy consumption is largely determined by payload size and the transmission frequency. If the battery voltage drops too far during operation, please change the settings by using a downlink or the Android app.
