7-Segment Red LED

• Manufacturer: 100 LED
• Voltage: 1.8-2.2V
• Doc Sheet

Your basic 7-segment LED. Common anode. Two decimal points, but only the one on the right is wired. Digit height is 0.6". Overall height is 1"

Hooking it up

Of the ten pins of the display, two are used to provide power (+). The power pins are the middle pin of each row. The remaining eight pins control the seven segments of the digit, plus the decimal point in the lower right corner. The pins will turn on the corresponding segments (as indicated in the schematic) when connected to ground. Desired characters can be displayed by selectively connecting dark segments to the voltage supply and bright segments to ground.

The data sheet implies that current to each LED should be limited to 20 mA. Connect resistors appropriate for the driving voltage in series with ground. Display brightness can be customized with a particular voltage/resistor combination.

For example, +5 V power supply and ~500 ohm resistors between the segment pins and ground has produced satisfactory results.

To efficiently run the display with a microcontroller, consider Controlling 7-Segment LED Display with 74HC595.

Code

Availability

• Sparkfun

Modules using this component

• Controlling 7-Segment LED Display (74HC595)

References

• http://www.sparkfun.com/commerce/product_info.php?products_id=8546
• [Datasheet]

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