Cheap logic analyzer SPI i2c UART

Huge LED matrix with scrooling text. In the next video we will connect a bluetooth module to it and send text with out smartphone. All the links are below.

Help my projects on Patreon : https://www.patreon.com/ELECTRONOOBS
my Q&A page: http://electronoobs.com/eng_preguntas.php
COUPONS
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Buy logic analyzer (12$): https://www.gearbest.com/other-accessories/pp_1207166.html?wid=1433363&lkid=13995683

Digital 2-channel Oscilloscope: https://www.gearbest.com/other-instruments/pp_729975.html?wid=1433363&lkid=13995688

PRINTERS
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Anet A8 (19% discount): https://www.gearbest.com/3d-printers-3d-printer-kits/pp_337314.html?lkid=13320229

Creality CR10 mini: https://www.gearbest.com/3d-printers-3d-printer-kits/pp_778273.html?lkid=13320195
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Coupon: "Tornadous1"

Creality CR10 (EU): https://www.gearbest.com/3d-printers-3d-printer-kits/pp_441282.html?wid=89&lkid=13320215
Coupon: "cr10jk1"
LINKS
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Download LOGIC software: https://www.saleae.com/downloads
Download the Text send App: http://www.electronoobs.com/eng_arduino_tut14_app1.php
Create the App video: https://www.youtube.com/watch?v=evVRCL9-TWs&t=25s
SCHEMATICS
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SPI simulation: http://www.electronoobs.com/images/Robotica/tut_7/SPI_analyze.png
UART simulation: http://www.electronoobs.com/images/Robotica/tut_7/UART_analyze.png
i2c simulation: http://www.electronoobs.com/images/Robotica/tut_7/i2c_analyze.png
CODE
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i2c test sketch: http://www.electronoobs.com/images/Robotica/tut_7/i2c_test_example.zip
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Видео Cheap logic analyzer SPI i2c UART канала Electronoobs