Posted in Sprinkler Projects, Tools and equipment on Jul 27th, 2013
As I am getting more experienced with the TM-240A pick and place machine (in the following I will call it the PNP machine, as in PNP transistors 🙂 ), I’ve been thinking of ways to improve productivity. One obvious way is to panelize PCBs, meaning to assemble multiple copies of the PCB onto the same […]
Posted in Apps, Sprinkler Projects on Jul 16th, 2013
Update: OpenSprinkler new mobile app (native version) is now available on all platforms. Search ‘opensprinkler’ in iOS App Store, Android Play Store, or Windows Phone Store, then download and install the app. Additional details can be found in this blog post. In this blog post, I will walk you through the basic steps to set […]
Posted in Raspi, Sprinkler Projects on Jul 12th, 2013
Hi, this is a new product post for OpenSprinkler Pi (OSPi) v1.2. Since its original release, OSPi has become a very popular product. This version is a minor revision. The main change compared to version 1.1 is the addition of a PCF8591T 8-bit A/D D/A converter, which provides four independent 8-bit analog input pins, and […]
Posted in Arduino, Power switch, Sprinkler Projects on Jun 29th, 2013
One of the hallmarks of OpenSprinkler / OpenSprinkler Pi is the capability of expanding the number of zones. While the main controller can only interface with 8 zones, you can expand beyond 8 zones by daisy chaining Zone Expansion boards. Each expansion board adds another 8 zones. Because the zone expansion is implemented using shift […]
Posted in CNC, Sprinkler Projects on Jun 27th, 2013
The final sample of the injection molded enclosure has arrived. Very exciting! The moment of decision: I’ve got three samples, each with a slightly different color. I’ve taken a few picture of all three side by side. The differences are subtle, but basically the first one (left) is more gray-ish, the second one (middle) is […]
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