Arduino Uno R3 Microcontroller A000066

Great for use as a PWM output- very cheap as …
Works perfectly; is genuine! Great for use as a PWM output- very cheap as well! Looking forward to buying many more.

Frustrating fun
If you get into this it can be addicting, but not expensive. Everything in this kit can be replaced for $20 down to $2 but it’s actually pretty rugged and can take a lot of abuse and/or mistakes. The one thing I learned the hard way was that the power supplied by the USB from your computer is enough to power the UNO board and a few (a bunch but they dim as you add) LEDs but not enough for even the motor that came in the kit. It will run but with no speed or power. It says that you can use up to 20vdc external power but be aware that voltage is passed on to your breadboard. I bought and used a 12vdc power supply that didn’t harm the board, made the motor buzz like crazy, but fried the LCD. I have since bought but not used yet a 4 pk power controller for just $11.50 and a replacement LCD for$5.70. The external 12vdc supply was just $8.00 and I’ve also bought and used a temperature humidity chip for $8.60 for a 4 pk and an RTC (real time clock) for $6.25. I suggest you buy all of these if you order either kit. If you are wondering how advanced this is the sky is the limit. If you can load a computer program and transfer files you can be blinking LEDs the same day you get the controller and you can be writing to the LCD almost as quick. Be advised that the schematic on page 116 shows the pin layout of the LCD 1-16 top to bottom but the illustration is real life 1-16 bottom to top. That caused some frustration. The code that you write to make your sketches is very exacting. Capitalization, punctuation, and spelling is critical. You must write everything EXACTLY as it should be or it won’t even try to run your program. If you’re easily frustrated and not very exacting you might consider a different hobby. To do more than basic stuff you’re going to have to learn a lot of code and it’s not in English as we know it but if you are willing to learn that you can build way more than just clocks, calendars and weather stations.

See detail on arduino-uno-r365