| ??? 09/11/15 02:24 Read: times |
#190569 - Sure, if you already have 12 x MAX7219 Responding to: ???'s previous message |
Raghunathan said:
Will the following idea be OK ?
1. I connect the segment displays in parallel for all 12 drivers and connect the header to the MCU port pins. 2. I connect the 12 nos CS pins of MAX7219 to 12 pins of MCU. Now I can send through SPI the required digit information to any of the 12 MAX7219 that I choose by controlling the CS line.. Sure, if you already have 12 x MAX7219. However, as Erik mentioned, these days you can add a small 8051 and a 7 wide CMOS driver like ULN2003V12 for less than a MAX7219. |
| Topic | Author | Date |
| One 89V51RD2 and 12 nos 4 digit LED modules | 01/01/70 00:00 | |
| shift registers | 01/01/70 00:00 | |
| LED drivers | 01/01/70 00:00 | |
| Why not many MAX7219 drivers? | 01/01/70 00:00 | |
| Sure, if you already have 12 x MAX7219 | 01/01/70 00:00 | |
Thanks to all those who responded | 01/01/70 00:00 | |
| might have been ridicolous, but | 01/01/70 00:00 |