Looking for a Nano compatible board without USB

Official Hardware Nano Family Classic Nano
1

Hi,
I'm looking for a Nano pin compatible board without the USB hardware. I'd like to use it with batteries but the USB to serial chip and also the power converter needs power which i'd like to save.
I can upload the program to the board using ICSP and for developing I'd use my Arduino Nano. But currently I'm facing an issue so I need to use the Nano.
I haven't found any device nor a hint how to only have the Nano powered by 5v without powering the converters.
And im not good enough in SMD soldering to remove the USB converter and the 3.3v converter.
The Atmega328P DIP seems to be to large to solder it on a board and additionally the crystal, the ICSP and the other parts.

Do you know if a pin compatible 5v board without USB exists?

Regards
Nils

2

Arduino Mini?

3

If you mean the Pro Mini, made by SparkFun, it's been retired, according to:
https://docs.arduino.cc/retired/boards/arduino-pro-mini/

4

Do you need the exact form factor? Do you need exactly the same I/O?

5

What's the issue - too much power consumption?

6

But the Pro Mini is not pin compatible. And I use +5v and GND also as PB2, PB3 and PB4. A simple switch is not possible.

I know I can change to a Pro Mini variant and resolder parts on my board, using only the Pro Mini and keep the Nano for other things...

7

you mean DIP

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9

As I said, Pro Mini it's retired; not my suggestion. You might find one, might not.

10

@derniwi Since you can't/won't answer questions, I'm out.

11

so, you want spare energy, not need to desoldering USB connector, and CH340 use very low current(12mA), especially when not used by running program(0.2mA). much important is to remove 4 LED(20mA each).
to desoldering surface mounted components i recommend household iron.

12

No, it's not: https://www.sparkfun.com/products/11113. And there are plenty clones of it in this world so that should not pose a problem.

The Arduino version (whatever that is) has been retired.

13

Yes, because I'd like to use a board for proper working without unneeded circuits for power saving. But if there is an issue I'd like to swap to a classic Nano by just unplugging the simple board and inserting the Nano.

14

Yes. I'd like to run the project on rechargable battery. I have a Nano clone for testing and removed the LED resistors already.

15

Yes, sorry for the typo...

16

Buy a clone with the CH340 IC. You can easily cut it off with a small pair of wire cutters or a knife

17

i suppose you know this all
https://learn.sparkfun.com/tutorials/reducing-arduino-power-consumption/all

18

@sterretje already explained the situation, but I want to also make a statement on this because it is important to try to mitigate any harm that might be done to this excellent board by Arduino's documentation.

Unfortunately the Arduino documentation team's decision to put the Pro Mini documentation in the "Retired" section of the Arduino documentation website is misleading. It is only that they don't want to maintain the documentation anymore, so it is Arduino's documentation for the board that is retired, not the hardware. This board is manufactured and supported by SparkFun, so it is solely up to SparkFun to decide on its production status.

SparkFun has not retired the board. You can determine the status of any SparkFun product by looking at its product page on sparkfun.com. They clearly mark any retired products as such there. SparkFun also maintains their own documentation for the board, which you can find by clicking the "DOCUMENTS" tab on the product page on sparkfun.com

3 Likes
19

An utterly stupid and unnecessary state of affairs, then. Too bad.

20

Even if it were true, does the retired status matter for a personal project?

21

Depends. It was being recommended as an alternative, despite not meeting the OP's requirements.
Sorry, I'll leave now.