Pages: [1]   Go Down
Author Topic: Alternative to MAX7219 LED Driver for 8x8 Display  (Read 1262 times)
0 Members and 1 Guest are viewing this topic.
NZ
Offline Offline
Jr. Member
**
Karma: 1
Posts: 91
View Profile
 Bigger Bigger  Smaller Smaller  Reset Reset

Hi

Is there a cost effective alternative to the Max7219/21 LED driver ?
They are about $23 each at Element14

Is the Texas TLC5928 compatible, it doesn't say anything about SPI, just serial connected.

My electronics skills are not good enough to determine if this would work

I'm driving a 8x8 display via SPI bus, well hoping to  smiley

K
« Last Edit: March 19, 2012, 05:03:32 am by fiddler » Logged

Offline Offline
Newbie
*
Karma: 0
Posts: 48
View Profile
 Bigger Bigger  Smaller Smaller  Reset Reset

Y u no use nokia3310 display?
Logged

NZ
Offline Offline
Jr. Member
**
Karma: 1
Posts: 91
View Profile
 Bigger Bigger  Smaller Smaller  Reset Reset

I need to be able to see the display some distance away, maybe 10m or so.
Logged

Offline Offline
Newbie
*
Karma: 0
Posts: 25
View Profile
 Bigger Bigger  Smaller Smaller  Reset Reset

Have you tried Ebay?
I got 10 max7219 for like 5 bucks a few months ago.
Logged

Toronto, Canada
Offline Offline
Edison Member
*
Karma: 2
Posts: 1234
"Keep it R.E.I.L. - "Research, Experiment, Investigate and Learn"
View Profile
 Bigger Bigger  Smaller Smaller  Reset Reset

You can use 74HC595. You need two of thoses chips to display a 8 X 8 Matrix. 3 of them is your 8 X 8 is a Red - Green type. Work with SPI. I am not using SPI yet for them, I using the shiftOut(). Check it out for the 74HC595. And they are easy to use. 

@Donziboy2

Quote
Have you tried Ebay?
I got 10 max7219 for like 5 bucks a few months ago.

You did ? well my order came today, and I order 7  MAX7219 for under $5....  I taught it was ... to my mistake... instead of 7 chips came in.... ( I did not read : FOR 10 Chips ).... I got ... 70 chips    smiley-eek   about 0.50 each. 

They where wrap in ...plastics wrap...  smiley-razz   I was expecting into a antistatic pink / black foam.  And I order them a month ago.  ( China --> Toronto, Canada )  I hope they are in working conditions.

If the OP don't mind the waiting... 0.50 each is not a bad price.  smiley-mr-green

   
 

 
Logged

Global Moderator
Boston area, metrowest
Offline Offline
Brattain Member
*****
Karma: 533
Posts: 26951
Author of "Arduino for Teens". Available for Design & Build services. Now with Unlimited Eagle board sizes!
View Profile
WWW
 Bigger Bigger  Smaller Smaller  Reset Reset

So Techone, are you going into MAX7219 distribution business now smiley-wink
Send out chips for $1 each via post office?
Logged

Designing & building electrical circuits for over 25 years. Check out the ATMega1284P based Bobuino and other '328P & '1284P creations & offerings at  www.crossroadsfencing.com/BobuinoRev17.
Arduino for Teens available at Amazon.com.

NZ
Offline Offline
Jr. Member
**
Karma: 1
Posts: 91
View Profile
 Bigger Bigger  Smaller Smaller  Reset Reset

Ebay, didn't check but am now :-)
Thanks
Logged

Toronto, Canada
Offline Offline
Edison Member
*
Karma: 2
Posts: 1234
"Keep it R.E.I.L. - "Research, Experiment, Investigate and Learn"
View Profile
 Bigger Bigger  Smaller Smaller  Reset Reset

@CrossRoads

Nah !  Not yet...  smiley-roll I like to keep them.... for now... but I maybe possible to trade some of them ...  smiley-roll

I just hope those chips are working... that is my consern at this time. I have to learn to hook-it up, how to use them, do so projects with them and looking for ideas to use them.
Logged

0
Offline Offline
Edison Member
*
Karma: 7
Posts: 1242
Arduino rocks
View Profile
 Bigger Bigger  Smaller Smaller  Reset Reset

I took got a 10 pack of the MAX7219 chips on ebay...  for like $5..

came in plastic wrap as well..



Alternately..... you can go to MAXIM and request FREE samples..

both the MAX7219 & MAX7221 (SPI support) are available for free samples..  (I got mine.. as well as some other chips from TI)

good luck!

Logged


Offline Offline
Edison Member
*
Karma: 5
Posts: 1730
View Profile
 Bigger Bigger  Smaller Smaller  Reset Reset

Ive gotten 3 from ebay all work tested 100%
Logged

Pages: [1]   Go Up
Jump to: