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https://www.sparkfun.com/products/retired/759

https://forum.allaboutcircuits.com/threads/led-matrix-without-microcontrollers.42711/

https://www.circuitbasics.com/how-to-setup-an-led-matrix-on-the-arduino/

https://www.novastar.tech/ https://hackaday.io/project/13090-colormatrix-a-8x8-rgb-led-matrix-for-stm32-maple

https://robu.in/

https://www.electronicscomp.com/

https://www.optolab.ftn.uns.ac.rs/index.php/education/project-base/242-led-matrix-display-library-examples

https://dev.to/apollolabsbin/stm32f4-embedded-rust-at-the-hal-spi-with-the-max7219-led-dot-matrix-3627

https://controllerstech.blogspot.com/2019/09/interface-dot-matrix-dislay-with-stm32.html

https://hackaday.com/2015/01/05/rgb-led-matrices-with-the-stm32-and-dma/

https://www.bobshop.co.za/item/533860970/16X32_Colorful_Music_Spectrum_STM32_LED_Lights_Frequency_Display_Assembled_Dot_Matrix_Board.html

https://dev.to/apollolabsbin/stm32f4-embedded-rust-at-the-hal-spi-with-the-max7219-led-dot-matrix-3627

https://alexnld.com/product/16x32-colorful-music-spectrum-stm32-led-lights-frequency-display-assembled-dot-matrix-board/

https://embedded-lab.com/blog/lab-12-basics-of-led-dot-matrix-display/

https://www.gentleroa.com/index.php?route=product/product&product_id=282

https://circuitdigest.com/microcontroller-projects/interfacing-max7219-led-dot-matrix-display-with-arduino

https://embetronicx.com/tutorials/tech_devices/led-matrix-and-how-to-make-our-own-led-dot-matrix/

https://www.excelitas.com/product-category/chip-board-led-arrays?gclid=EAIaIQobChMInonvz6u__wIVUCOtBh3D6Q52EAMYASAAEgJwqfD_BwE

https://apollolabsblog.hashnode.dev/stm32f4-embedded-rust-at-the-hal-spi-with-the-max7219-led-dot-matrix

https://forum.arduino.cc/t/dcf77-led-matrix-clock-using-a-stm32-bluepill-with-built-in-backup-rtc/994599

https://www.st.com/en/power-management/stled524.html

https://www.electrodragon.com/product/16x16-led-display-module/

https://www.fruugo.ae/4x-dot-matrix-8x8-led-display-module-for-51-stm32-mcu-drive/p-174598160-373426847

https://www.edaboard.com/threads/scrolling-text-on-8x8-led-dot-matrix.345843/

https://www.electronicpro.co.za/products/16x32-colorful-music-spectrum-stm32-led-lights-frequency-display-assembled-dot-matrix-board

https://www.tokopedia.com/cvnea/max7219-8x8-dot-matrix-led-module-stm32-mcu-controller-for-arduino

https://docs.nanoframework.net/devicesdetails/Max7219/README.html

https://www.risforbut.com/index.php?route=product/product&product_id=27

https://www.academia.edu/14063814/DIY_LED_Sign_with_MAX7219_Dot_Matrix_Module

https://www.alibaba.com/product-detail/Taidacent-3-3V-5V-STM32-Microcontroller_1652690350.html

https://www.lazada.com.my/products/flameer-max7219-dot-matrix-8x8-led-display-module-for-51-stm32-mcu-drive-i2416534005.html

https://stm32world.com/wiki/STM32_MAX7219/MAX7221

https://wokwi.com/projects/290144516831183368

https://hackmd.io/@0xff07/HkuFNtgN9

https://hackaday.io/project/157012/logs

https://www.wish.com/nl/product/16x32-colorful-music-spectrum-stm32-led-lights-frequency-display-assembled-dot-matrix-board-5ec9d2481df9ae4a8005c10d

https://www.mikroe.com/blog/interface-an-led-dot-matrix-to-startusb-for-pic-to-display-static-and-moving-text

https://alitools.io/en/showcase/max7219-led-dot-matrix-module-51-stm32-single-chip-microcomputer-control-drive-parts-are-not-welded-1005001516341754