0

https://learn.adafruit.com/assets/3813

I understand that analog 4 and 5 are SDA/SLC, isn't the picture also showing 5v and GND being plugged into two analog pins? Does that work?

I have it wired up to the actual 5v and GND, but it would be convieniet to be able to stack the RTC like they show in the picture

asked Jul 27, 2016 at 5:35
2
  • 2
    You can use ADC pins as general DIO too. In this case 2 PORTA pins set as output, one with HIGH and other LOW outputs to be used as source and sink. Sure pin currents must be within the allowed specs. DS1307 shall consume very low current (designed to be operating years by battery). Commented Jul 27, 2016 at 7:07
  • @Flanker You just gave an answer. You shouldn't put that in a comment. Commented Jul 27, 2016 at 9:17

1 Answer 1

3

It's written in the tutorial

If you set analog pin 3 (digital 17) to an OUTPUT and HIGH and analog pin 2 (digital 16) to an OUTPUT and LOW you can power the RTC directly from the pins!

answered Jul 27, 2016 at 9:20
0

Your Answer

Draft saved
Draft discarded

Sign up or log in

Sign up using Google
Sign up using Email and Password

Post as a guest

Required, but never shown

Post as a guest

Required, but never shown

By clicking "Post Your Answer", you agree to our terms of service and acknowledge you have read our privacy policy.

Start asking to get answers

Find the answer to your question by asking.

Ask question

Explore related questions

See similar questions with these tags.