Posted in Product News on Apr 25th, 2015
We have a number of overstocked printed circuit boards (PCBs) which I’ve listed on the shop page for sale. These are official PCBs used for our products, and are great for your prototyping need. They are all less than 40 cents each, and schematic / board design files can be found on the Rayshobby Github […]
Posted in MakeBusiness, OpenSprinkler on Apr 24th, 2015
Since March this year, orders of OpenSprinkler have been increasing rapidly. Within a couple of weeks, we’ve done two batches of OpenSprinkler 2.3 at our local manufacturer — Worthington Assembly Inc. (WAi). Previously I have blogged about OSPi manufactured at WAi, and I’ve shown videos of their SMT surface mount manufacturing pipeline, including pick and […]
Posted in ESP8266, IoT, Product News on Apr 23rd, 2015
Since the first version of ESPToy, I’ve done some pretty rapid revisions. This post is to introduce the new minor revision 1.21, with LiPo battery jack and charger. As you can see in the annotated diagram below, the main components are the same as ESPToy 1.2: a color (RGB) LED, pushbutton (wired to GPIO0, so […]
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Ray's DIY Electronics Hobby Projects
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