Check my new blog post on the ESP8266 Serial-to-WiFi module As the Internet-of-Things (IoT) are becoming more and more popular, there is an increasing demand for low-cost and easy-to-use WiFi modules. For Raspberry Pi and BeagleBone, you can plug in a cheap USB WiFi dongle (like the popular Edimax 7811). These dongles are generally less […]
Category Archive for 'Arduino'
Reverse Engineer a Cheap Wireless Soil Moisture Sensor
Posted in Arduino, Learning Electronics, Raspi, Sensors on Jul 23rd, 2014
At the Maker Faire this year I got lots of questions about soil moisture sensors, which I knew little about. So I started seriously researching the subject. I found a few different soil sensors, learned about their principles, and also learned about how to make my own. In this blog post, I will talk about […]
Announcing OpenSprinkler Bee (OSBee) Arduino Shield v1.0
Posted in Arduino, Product News, Sprinkler Projects on May 29th, 2014
Update: check out our new standalone OpenSprinkler Bee (OSBee) 2.0 with built-in WiFi and OLED display. Two months ago, I wrote a blog post about the preview of OpenSprinkler Bee, which is an open-source arduino-based controller for battery-operated sprinkler valves. While that’s still in the development stage, today I am glad to announce that an […]
This is a quick announcement that SquareWear 2.0 is now available for purchase at SeeedStudio.com. This is great news for customers living outside of the US, because SeeedStudio offers excellent and low-cost international shipping options.
Continuing from Part 1 and Part 2, this is the third and last post about how I reverse engineered a few off-the-shelf wireless temperature, humidity, and rain sensors, and used an Arduino to listen to and decode the sensor data. Update: RPi is also supported now! Check the provided programs at the end of this […]
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Ray's DIY Electronics Hobby Projects
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