Modules, cases, buttons...
by rodot » Fri Apr 04, 2014 2:22 pm
I used some similar I2C RAM in an old project (
https://www.youtube.com/watch?v=bGJX3UzEtss). It's cheap, but there are 2 problems:
- it's super slow
- you can't directly address external RAM with the atmega328 (atmega2568 can, see
http://andybrown.me.uk/wk/2011/08/28/512kb-sram-expansion-for-the-arduino-mega-design/)
...but actually I planned to put some I2C RAM in the universal module to come (extra RAM, vibrator, wireless com, extra I/O, L/R buttons, RGB LED, etc.).
Thanks for the link, and welcome on the forum!
-
rodot
- Site Admin
-
- Posts: 1290
- Joined: Mon Nov 19, 2012 11:54 pm
- Location: France
-
by ripper121 » Fri Apr 04, 2014 2:26 pm
Yes i have also read that its not possible to address external RAM with the atmega328, so i hoped i2c is fast enough
-
ripper121
-
- Posts: 224
- Joined: Fri Apr 04, 2014 2:02 pm
- Location: Germany
by rodot » Fri Apr 04, 2014 4:19 pm
"Fast enough"... well, it depends on your needs, but it's really, really slower than accessing internal RAM. But it's still a matter of milliseconds, so it's not that much.
-
rodot
- Site Admin
-
- Posts: 1290
- Joined: Mon Nov 19, 2012 11:54 pm
- Location: France
-
Return to Hardware Development
Who is online
Users browsing this forum: No registered users and 7 guests