add daisy chain example #22
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Nice :D Could I ask a question? I am trying to connect 20 Steppers to Raspberry pi with a ULN2003 driver (which will need 4 IO pins to control), I stacked it up using 74HC595 with a daisy chain. It's really slow. I guess it's the drawback. Could this PR include mentioning the speed of output signals? |
FoamyGuy
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Feb 21, 2022
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This looks good to me. Thanks for the great new example @Chao8219.
I used a minimal environment for testing with 3.3v only and a different microcontroller (Feather RP2040). I used individual LEDs and moved them around to different indexes. Works as expected and looks to me like the level shifted one would as well.
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Updating https://github.com/adafruit/Adafruit_CircuitPython_74HC595 to 1.3.4 from 1.3.3: > Merge pull request adafruit/Adafruit_CircuitPython_74HC595#22 from Chao8219/main > Fixed readthedocs build > Consolidate Documentation sections of README Updating https://github.com/adafruit/Adafruit_CircuitPython_Wiznet5k to 1.12.2 from 1.12.1: > Merge pull request adafruit/Adafruit_CircuitPython_Wiznet5k#52 from chabala/wiznet5k-reset-transition > Fixed readthedocs build > Post-patch cleanup > Post-patch cleanup > Consolidate Documentation sections of README > Consolidate Documentation sections of README
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Hi, Dear All,
The wiring schematic and code for a daisy chain example are added through this PR. I also included a markdown doc to explain what components are needed to make this example work.
Please let me know if there is anything else I may need to do. Thanks!
Best,
Chao