Hello @taunushexe as @ajb2k3 mentioned only one GPIO (the second one) is used for the RGB unit. So the other GPIO can still be used as input. I created an example which uses GPIO1 as input to control the color of the three RGB LEDs in the RGB unit. See UIFlow2 Project Zone : M5Dial_RGBUnit_GPIO1_as_input_UIFlow2.0.4 Thanks Felix

@dclaar I have no problem with the Stamp-PICO running on the 3.3V power from the programmer. And the StampS3 running on USB 5V actually outputs out 3.3V at the RGB output... So, YES!

The Neohex has 37 RGB LEDS and the headband has 118 RGB LEDs. the range should be set to 155 as there are now 155 LEDs connected together. They should also be connected as below [image: 1655653784137-hex_cat-resized.png] However, this many LED's will cause power issues and you will need to build a power booster cable as shown in this guide. https://youtu.be/7MP_eG3U2So

@felmue ah okay, perfect! Thanks! @ajb2k3 thanks for the tip but unfortunately I can't access the USB port in my setup, so I'll have to go through the pins anyway.

@conrad i use uPyCraft to transfer files to atom. You can also connect uPycraft with atom and use REPL (something like command shell) to use interactive micropython command interpreter). With UiFlow it is possible but you must first transfer libraries to /apps folder in flash memory and use advanced->execute->execute code to run appropriate commands, ewentually write raw code in Python </> tab. In this option code probably properly run only when you download it to device (not run with play button). If i find some free time then i create custom block to scroll text using recently added Hardwares->Rgb->set atom matrixblock, but i must do some experiments with it.