| ??? 07/04/06 02:07 Read: times |
#119590 - it's clear enough, thanx... Responding to: ???'s previous message |
thanks for all of you,
it is clear enough for me now. I'll try to run every column and every digit one by one, and check the button within it. Oh ...out of the topic: i've another problem that my dot matrix give the different bright for every different number of row at ON mode. So when i 'ON' all the row in 1 column, the bright isn't high as it is when the 'ON' on one row at one column, so i've the picture with the different bright for every column whenever the 'ON' row is different for every column. I used inverter 7404 to drive the column(anode) and i used ULN2803 in rows (at cathode)to sink the current. I think that the current isn't enough to drive all of the row. Have any idea? Thanx |
| Topic | Author | Date |
| Dot Matrix & 7Segment at same time??? | 01/01/70 00:00 | |
| Pardon? | 01/01/70 00:00 | |
| No clairvoyant here ! | 01/01/70 00:00 | |
| Clarification... | 01/01/70 00:00 | |
| At the same time! | 01/01/70 00:00 | |
| dot matrix in a timer | 01/01/70 00:00 | |
| it's clear enough, thanx... | 01/01/70 00:00 | |
| I add a resistor. | 01/01/70 00:00 | |
the 'perfect' solution | 01/01/70 00:00 |