Posted in Arduino, Product News, Sprinkler Projects on Jun 29th, 2012
Ok, this post is a bit late, as 1.3u has already started selling since Tuesday this week. Anyways, 1.3u is a minor revision since 1.2u. There are only a few changes (see Release Notes for details), so I didn’t make a release video. This post explains why these changes were made and some of the […]
Posted in Arduino, Sprinkler Projects on Jun 24th, 2012
I am glad to announce that the new interval program has been released and available for download at the OpenSprinkler GitHub page. This is a major software update since the initial release in October last year. Here is a list of new features in this version: Program-based scheduling. Each program consists of a set of […]
Posted in Product News on Jun 12th, 2012
A couple of new products have been just added to Rayshobby Shop page. These include a 434MHz RF transmitter and a USB-to-Serial (RS232) converter. So what are they good for? The 434MHz RF transmitter is a general-purpose RF transmitter with on-board PCB antenna. It is compatible with SparkFun’s 434MHz RF transmitter. You can find a […]
Posted in Arduino, Sprinkler Projects on Jun 12th, 2012
Over time I’ve received some questions regarding the hardware design of OpenSprinkler. Here are some common questions and my answers: Why using a switching regulator? Since OpenSprinkler uses a single power supply (i.e. 24VAC sprinkler transformer), it is necessary to step down 24VAC to 5VDC and 3.3VDC in order to provide power to the circuit. […]
Posted in Components on Jun 5th, 2012
I just finished a batch of ordering yesterday, and felt that it would be fun to document my favorite distributors, suppliers, and PCB manufacturers. This is basically a review of some websites and stores that I regularly buy electronic components, supplies, and PCBs from. It’s suitable for buying in small to medium quantity (i.e. a […]
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