Nano DIP: The Smallest Arduino-Compatible ATtiny3217 Board

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See my website: Nano DIP: The Smallest Arduino-Compatible ATtiny3217 Board

  • The Arduino Nano DIP is similar to other Nano boards but it uses the new generation 8-bit ATtiny3217 processor instead of the older ATmega328P.
  • It maintains compatibility with the Arduino Nano while offering additional features.
  • Moreover, it is the smallest complete Arduino board ever made, measuring just 33 x 10 mm - the same size as the ATmega328P 26pin DIP package.


Nano DIP: The Smallest Arduino-Compatible ATtiny3217 Board

2 Likes
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Quite small,

Is it possible to pull out the 328 chip from my UNO and put this one in?
Would be a great if possible.

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no i dont think so

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Hi. Recently started using mine and running into a few issues. I'll approach 1 at a time so there aren't any context issues. :slight_smile:

The first big one is that I'm trying to use I2C. > i'm using a Adafruit Trellis Monochrome Driver PCB for 4x4 Keypad & 3mm LEDs : ID 1616 : Adafruit Industries, Unique & fun DIY electronics and kits .When polled via I2C it should be 0x70

Trellis-
5V to 5V rail of my breadboard
GND to GND rail of my breadboard
SDA to DIP silk screened "10"
SCL to DIP silk screened "11"
INT - This is the big question, not exactly sure where it goes. I put it into DIP silk screened "9", and sometimes the I2C scanner finds it, sometimes it doesn't, sometimes comes up with multiple addresses

DIP
So on the DIP I tie (silk screen) GND to GND, and GND to my breadboard ground rail.
Power is coming from the console connection

When I run I2CScanner's Scanner, I see -

15:57:28.004 -> --- Scan started ---
15:57:35.225 -> No I2C devices found
15:57:35.225 -> --- Scan finished ---
15:57:35.225 ->
15:57:40.167 -> --- Scan started ---
15:57:42.965 -> No I2C devices found
15:57:42.965 -> --- Scan finished ---
15:57:42.965 ->
15:57:47.912 -> --- Scan started ---

I'm wondering if I picked the wrong pin for INT. I don't see a specific one on the DIP, and the scanner doesn't seem to ask about a dip pin.

If I run Adafruit Trellis Library's Trellis Demo, I change ... Well, actually, I've had to try to restart the IDE twice as I can't seem to get the console working again.

I can't get any consistency to happen. Is there anything I can do? Is there anything I can do to reset the device back to original?

Thanks, Tuc

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Sounds like you need 4k7 pull up resistors on the SDA and SCL lines, unless one of the boards has them already.

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Hi,

@bobcousins , when I hooked up to an UNO I didn't need it, and it never had issues with the same programs. I'll try, I have them, but wouldn't I have needed them on the UNO too?

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I think that's stabilized it. So far I'm not running into issues with the I2CSCANNER>Scanner, but still weird results from Adafruit_BusIO>i2c_address_detect.

I also oddly solved another issue. My code had -

  INTPIN = 9;
  // INT pin requires a pullup
  pinMode(INTPIN, INPUT);
  digitalWrite(INTPIN, HIGH);

And when that ran, my serial output ended up garbled. I commented it out, the program runs fine, and I don't see any downside. Is there an INTPIN already defined?

Tnx, Tuc

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A little risky to call it Nano; people might expect it to be a drop-in replacement for an official Arduino Nano. Based on your pinout it doesn't seem to be :wink:

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Really cool, thinking of using it in a prototype. What are connectivity options? I understand it does not have any Bluetooth.

Would it be possible to add Bluetooth? I think it would make a lot of sense in a wearable prototype.

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No Bluetooth

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Is there anywhere else I can buy one to evaluate other than Elecrow?

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I use Elecrow for dropshipping

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