When I set the speed on the Raspberry Pi at 1 Mbit/s with my C program, the received answer coming from the Arduino is mostly garbage (random characters), but this issue disappears with lower speeds. Arduino UNO TMC2130 and Nema 17 Motor I currently have an Arduino UNO. What I send is not important, it's the Arduino answer that matters. grbl tmc2130, BIGTREETECH Direct TMC2130 V3.0 SPI Stepper Motor Driver Silent 3D. ![]() As a bonus, this display has a resistive touchscreen attached to it already, so you can detect. ![]() This TFT display is big (3.5' diagonal) bright (6 white-LED backlight) and colorful 480x320 pixels with individual RGB pixel control, this has way more resolution than a black and white 128圆4 display, and double our 2.8' TFT. ![]() I have a Rapsberry Pi master sending SPI requests to an Uno Chinese clone slave : I send 16 characters to the Arduino, which answers 16 others characters. Add some jazz & pizazz to your project with a color touchscreen LCD.
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