Connecting the EXT3 to the Particle Photon

Scope

This configuration has been tested successfully against
  • Particle Photon for the screens up to 3.7" included thanks to the remaining 50KB of the 128KB RAM
  • RedBear Duo for the screens up to 3.7" included thanks to the remaining 50KB of the 128KB RAM

Software

On the main sketch, set the board to boardParticlePhoton, corresponding to the pins defined in the hV_Configuration.h file of the ePaper_EXT3_Basic_Library (link 1, link 2).

Notes

This configuration has been used for the Remote e-Paper Messages Panel project.

The newer generation of Particle boards uses the Feather form-factor. Check the Connecting the EXT3 to the Adafruit Feather M0 page.
Sketch.ino

    










	

    

        
hV_Configuration.h

    

    

        

    









					
									

		
	





Hardware





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Large screens 9.7" and 12.2" require panelCSS to be defined and connected.

If the second memory is populated on the EXT3 board, flashCSS needs to be defined and connected. The library will keep flashCSS HIGH to avoid any interferences with the other devices connected to the SPI bus.



					
										
							

		
	






Posted: 28 Feb 2021
Updated: 24 May 2021, 24 Aug 2021