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This is a small module to enable your 1-Wire network to sense relative humidity. It is available to purchase in our online store. 
(click on any photo to see a larger version) This module consists of a Honeywell HIH-4031-001 sensor, a DS2438Z smart battery monitor chip (to interface the sensor to the 1-Wire network), two RJ45 sockets, a 3 way screw terminal block, two diodes, two capacitors, a resistor and a jumper and is available as either an assembled module, kit of parts or as a bare PCB. The PCB is 55x40mm. The RJ45 sockets overhang by around 2mm giving an overall module size of 55x42mm. The module is 20mm high. Please be aware that the HIH-4031 and DS2438Z are surface mount components and that you should only order the kit of parts if you are confident you are able to solder these in place without damaging them or the PCB. As this sensor is a version of the most commonly available design it is compatible with almost all 1-Wire software that supports humidity sensors, including digitemp, OWFS and many others. The RJ45 sockets allow you to connect the sensor inline in a network built with standard cat5 network cables without the need for any tools. They are wired to the common standard as described on our wiring information page. The screw terminals allow you to wire bare cables into the sensor if you prefer to make your connections that way. The jumper allows you to select the power mode for the sensor. Most people will use the parasitic power option but if you prefer you have the option to feed a seperate 5V supply to the sensor. This can be done either via the RJ45 connectors or the screw terminals. |