The Arduino Uno SMD is a "branch" of the Arduino Uno board that has a SMD (surface mount chip) that is smaller and cheaper, but not replaceable. It was developed when there was a shortage of ATMega328-PUs. It acts the same way as a "standard" Arduino Uno.

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“programmer is not responding” please help

at first my arduino uno is doing perfect. but after a few upload the message "avrdude: stk500_recv(): programmer is not responding avrdude: stk500_getsync() attempt 1 of 10: not in sync: resp=0x38" ...
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82 views

Problem in Uploading the Program in Atmega328 UNO smd controller

I am facing a Problem in Uploading a code in Atmega328 SMD. I am Uploading code via. "Program Loader" using the "Upload Using Programmer". I am able to upload the Program at every first time whenever ...
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1answer
66 views

Starting Off Low-Level Port Access

   I'm trying to teach myself some low[er] level code, but I just can't get it to work. I've tried OR-ing stuff in, AND-ing stuff in, and just straight up defining stuff, but it's not ...
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2answers
328 views

How do I use the additional serial ports on an Arduino UNO R3 clone?

I bought this Arduino clone over eBay. It seems to have an extra SPI and serial ports. How do I use these?
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1answer
619 views

USB mouse/keyboard passthrough feasible?

I'm looking to achieve the following: USB HID Mouse (or Keyboard) -> [ Arduino device ] -> PC | `-> Internet ...
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129 views

Trouble reading from multiple analog ports

So I'm trying to read 4 different analog values and store each one to a variable. I imagine doing this by first initializing the ADC registers and each time it enters the ADC ISR checking which port ...
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2answers
5k views

Programming Arduino Pro mini 328 with Arduino Uno SMD

I apologize in advance, because there is a lot of tutorials out there about programming arduinos with another arduino, however I can't find really simple one I could understand. I have Arduino Uno ...
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3answers
5k views

How cold or hot can my Arduino Uno get?

The Arduino Uno Page doesn't say the temperatures that it can operate in. I'm thinking about placing it outdoors. How can I make sure my Arduino Uno is safe in weather that can reach -20 to 105 ...
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3k views

How can I sense when someone is sleeping with my Arduino?

Ignore the stalker-like title. I am thinking about creating a project with Arduino that can sense you sleep habits, when you're asleep, and how much you sleep. It would be convenient to not have to ...
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115 views

Are there different revisions of Arduino Uno SMD?

I know there are different revisions of the Arduino Uno itself, but are there any revisions of the SMD? If they are is SMD R2 identical to through-hole R2? I have a board marked R2 SMD and I am ...
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24k views

How high of a baud rate can I go (without errors)?

The standard is 9600 baud. That's just the standard. Using a Arduino Uno SMD R2, what is the highest practical baud rate I can achieve? Bonus points for the audacious: How would you go about creating ...