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This board is a cut down version of the SWE2 for those people who only want to connect 2 or 3 SWE0 sensors into their network. It is now available to purchase in our online store. 
(click on the photo to see a larger version) This module is a very simple passive device with a total of four RJ45 sockets, and an IN5817 diode. Its primary use it to allow you to connect multiple SWE0 sensors so your 1-Wire network although it can also be used to connect other devices. It is optionally available with one of the RJ45 sockets replaced by screw terminals. The PCB is 68x14mm. The RJ45 sockets overhang by around 7mm giving an overall module size of 68x21mm. The module is 20mm high. In normal use two of the RJ45 sockets on PCB are used to connect the board inline to your network using standard RJ45 cables. The other two RJ45 sockets can then be used to connect 1-Wire sensors to the board, such as our SWE0 or SWE1 temperature sensors. If this is the last device on your network you have the option of connecting a third SWE0 sensor to the board as you will only be using one socket to connect to your network. The four RJ45 sockets are connected in parallel and therefore it doesn't matter which sockets you use for your network and which you use for sensors. It should be noted that this is a passive device and not an active 1-Wire hub and as such the lengths of the cables on the attached devices should ideally be less than 3m in order to ensure reliability of the network. In practice, however, you can often get away with much longer cables but this cannot be guaranteed. Please note that although this device looks very similar to our RPI3a device the two are wired differently and are therefore not interchangeable. |