Connecting the EXT3 to the Particle Photon
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).
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