Timeline for 7 Segment Display SET UP
Current License: CC BY-SA 3.0
12 events
| when toggle format | what | by | license | comment | |
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| Jun 21, 2014 at 12:05 | comment | added | Gerben | I second @jfpoilpret. The pins on the arduino can only provide/sink 40mA of current. I also see you added the resistors to the digits instead of the segments. That way, the more segments are on, the dimmer the display will be. It's better to put the resistors on the segments. Also use a resistor value that will limit the current to no more than 5mA per segment. That way, even if all segments are lit, the total current will be below 40mA. | |
| Jun 19, 2014 at 14:30 | vote | accept | developerto_jrm | ||
| Jun 19, 2014 at 4:46 | comment | added | jfpoilpret | One danger I see in your circuit is that it seems you are driving at least 7 LED segments at the same time (by the way, why do you need 12 pins to drive 3 digits of 7 segments? 11 should be enough, considering there is also a decimal point to drive: (7+1) x 3). That might draw too much current out of the Arduino and fry it. | |
| Jun 19, 2014 at 4:43 | comment | added | jfpoilpret | Could you give a reference to the LED display? That would help check out the wiring. Also, have you already written a sketch to drive the display? Posting it here would help as well. | |
| Jun 19, 2014 at 3:58 | answer | added | BrettFolkins | timeline score: 1 | |
| Jun 19, 2014 at 2:34 | comment | added | developerto_jrm | Great, thanks for the help and for the correction on my notation. Tomorrow I will keep posting the things you are requesting once I verify on the Arduino how the display is working. | |
| Jun 19, 2014 at 2:04 | comment | added | Ignacio Vazquez-Abrams | Which pins control which display lights up and which ones control the segments, and which one do you have to apply the positive voltage to? (Also, your pin notation is incorrect; pin 1 is at the bottom left and they go up counter-clockwise.) | |
| Jun 19, 2014 at 1:38 | comment | added | developerto_jrm | To tell you truth @IgnacioVazquez-Abrams, I really don't know. How can I verify this? is there any special annotation on the device? or any special behavior? | |
| Jun 19, 2014 at 1:30 | comment | added | Ignacio Vazquez-Abrams | Is the display common anode or common cathode? | |
| Jun 18, 2014 at 22:27 | history | edited | developerto_jrm | CC BY-SA 3.0 |
added 114 characters in body
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| Jun 18, 2014 at 21:05 | review | First posts | |||
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| Jun 18, 2014 at 20:47 | history | asked | developerto_jrm | CC BY-SA 3.0 |