![]() ![]() The simplest is probably to use a relay board, which you can get from Amazon, eBay and a variety of places. Q: How to use OpenSprinkler to interface with DC devices?Ī: There are two solutions. The stock MOVs that we offer are of type 07D560K. You can solder MOVs by following the picture below: each MOV (blue colored) should be inserted across the top and bottom holes next to every triac. The surface mount versions (including 1.4s, 2.0s, and zone expansion boards) currently have PCB holes designed to fit one MOV per station. ![]() MOVs are useful for protecting the controller from impulse high voltages such as lightning. There is no need to install MOVs for fully assembled OpenSprinkler (2.1 or above). For earlier hardware versions, please check this blog post.Ī: From OpenSprinkler 2.1, the fully assembled OpenSprinkler has built-in bidirectional transient voltage suppressor (TVS). Q: Can I power a USB WiFi adapter (or other USB devices) through OpenSprinkler?Ī: This is supported by default from hardware versions 1.42u and 2.0s. Also, if not using the RFM12B transceiver, digital pins D2 and D10 are free in all hardware versions. Note that Arduino analog pins can also be used as digital pins.
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