Drizzt321
Drizzt321
/ Adafruit 7 segment i2c hex configuration.txt
Last active
October 4, 2017 06:25
Adafruit 1.2" 7-segment LED i2c hex configuration
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| The Adafruit 1.2" 4 digit 7-segment LED display with backpack (https://www.adafruit.com/product/1270) is connexted via the i2c bus interface. Adafruit has a quite good soldering & setup tutorial at https://learn.adafruit.com/adafruit-led-backpack/1-2-inch-7-segment-backpack, however they do a terrible job of describing in easy detail the necessary i2c writes to control the display from a language other than their provided libraries for Arduino or Python. So I've assembled a pretty comprehensive address and data to write in order to fully control the display. Please see attached images for some details. | |
| digit segment numbered.jpg - shows an image of the display, along with numbers/letters along with a bitmask to use to control each segment. | |
| seven segment bitmask chart.jpg - shows which bits control which segments for the digits | |
| dots segment bitmask chart.jpg - shows which bits control which segments for the dots | |
| Examples of writing are using the Linux i2c-tools. For example this write: | |
| i2cset 1 0x |