Projects
Development decisions, tests, and lessons from the RP2350 3.5″ Touch LCD project.
6posts
ProjectsRP2350 3.5″ Touch LCDWhen the RP2350 Touch LCD 3.5 will not boot or the upload port cannot be found, unplug USB-C, hold the BOOT button, and reconnect the cable to enter USB download mode.
ProjectsRP2350 3.5″ Touch LCDAn RP2350 touch LCD timer that starts its MM:SS countdown only when the inverter is confirmed running - not when START is touched - and handles the STOP command and actual-stop check when time runs out.
ProjectsRP2350 3.5″ Touch LCDA horse-riding machine controller built with the 3.5-inch RP2350 touch LCD, with one manual mode, 11 program modes, 10-stage speed profiles, and RS485 Modbus RTU inverter control.
ProjectsRP2350 3.5″ Touch LCDRUN/STOP and speed control of an inverter over RS485 Modbus RTU, with the RP2350 touch LCD graphing only the speed the inverter actually reported - not the commanded value.
ProjectsRP2350 3.5″ Touch LCDCopying a TTF file into an Arduino project does not put Korean text on a TFT LCD. Here is how we converted only the glyphs and sizes the screen needs into bitmap data for the RP2350 Touch LCD 3.5.
ProjectsRP2350 3.5″ Touch LCDInstead of playing a video, we cycle three PNG frames and redraw only the region where the horse moves, cutting flicker on the ST7796 LCD.
