Cool! You're welcome Amoque, glad you can continue on your quest.
I'm with Art, still confused with the addresses that are working. It must be an early version not mentioned in the data sheet I was looking.
|
Re: Second I2C address not responding
Cool! You're welcome Amoque, glad you can continue on your quest.
I'm with Art, still confused with the addresses that are working. It must be an early version not mentioned in the data sheet I was looking.
Louie
|
Re: Second I2C address not responding
Haha! A question I can answer for you! The part number is PCF8574A - the "A" differing only by its upper address nibble, 0111xxx. If I include the write bit (I do because no read is ever done from the completed modules), the address range is $70 - $7F. With both the '74 and '74A, I can put 16 modules on a bus and make my own "Wheel of Fortune"! Did I not say I bought quite a number of these?
A picture so that you can envy my good fortune...
The small item is a standard dot-matrix LED for comparison.
--All the best,
Amoque
|
Re: Second I2C address not responding
I was hoping they were matrix displays
They do look like a good way to make a project flexible.
I wouldn't want to be making the front panel for them though!
Members who have read this thread : 0You do not have permission to view the list of names.
Posting Permissions
Bookmarks