Three years ago, when I first started looking into Arduinos, I would never have looked at the clones. This was mostly because I knew that I couldn't tell a good clone from a bad clone. This meant that I only had a couple of Arduinos (an Uno and a Mega) due to cost. Eventually I tried out a Tosduino Uno clone, was happy, and bought a few more. Now I'm finding more and more projects are within my capability and I'm putting projects together that I want to leave in the field. The result is my Arduino fleet is mostly deployed. So I started looking at the even cheaper clones.
While shopping for components on EBay, I noticed some Pro Mini compatibles for a bit more than $2 each. Stunned, I bought a couple, as well as an UART TTL module, and waited for three weeks for them to arrive. My expectations were low. To my surprise, everything worked fine. It took a bit of head-scratching to figure out how to use the UART TTL module, but this was only because I expected the pins on it to map directly to the pins on the end of the Pro Mini clone, which they don't. I've since ordered a bunch more of the Pro Mini clones.
The Pro Minis are certainly clones and probably fakes of clones. The silk-screening looks pretty shoddy. My suspicion that they are abusing a trademark (but not Arduino's trademark, Deek-Robot's). However, they work just fine, at least as far as I've been able to exercise them.
At just over $2, I'll be putting these everywhere. Forget Nest thermostats, I'm building my own. And my boys will be getting all kinds of Arduino hacked toys. Heck, I'll have no issues sending them up on my RC plane and quadcopters as they are probably less expensive than any of the other components.
The same goes for a lot of the sensors and other components I use. They are available on EBay for peanuts. So I end up getting something in the mail every few days. I've had to explain to our mail-lady that I'm now a full-time mad scientist.
The only issue is that I don't feel like I'm supporting the folk that got me into this stuff in the first place: Adafruit, Sparkfun, and the Arduino crew. Today, I found myself looking for a way to donate in some way to Arduino and decided to order some Arduino t-shirts, but it doesn't seem like enough.
Then again, after reading Cory Doctorow's Makers, I'm not sure that this is a bad thing. I mean, a low barrier to entry for these kinds of devices and the software used to work with them is a huge benefit. As an example: It is sure going to make it easy to put together a robotics class for our local library.
Anyways, I just thought I would share my...half-guilt half-delight.