Orange PI 3, [SBC]

короче не получится там ссд воткнуть

Simply meassure your "remaining" filament before starting a print.
If you want the PCB, I have for sale. just mail me:              www.kjell@startsoft.no
Arduino code:  DO ADD # before the first 3 lines !!!!!!!!!
include "avr/interrupt.h";
include Arduino.h
include U8x8lib.h
U8X8_SSD1306_128X64_NONAME_SW_I2C u8x8(/ clock=/ 2, / data=/ 0, / reset=/ U8X8_PIN_NONE);         // Digispark ATTiny85
int pulse=0;
void setup(void) {
u8x8.begin();
GIMSK = 0b00100000;    // turns on pin change interrupts
PCMSK = 0b00001000;    // turn on interrupts on pins PB3
sei();                 // enables interrupts
}
void loop(void) {
u8x8.setFont(u8x8_font_victoriabold8_r);
u8x8.drawString(1,2,"Reset and drag");
u8x8.setCursor(1,4);
u8x8.print("   fillament ");
u8x8.setCursor(2                                                                                            ,6);
u8x8.print("cm:   ");
u8x8.setCursor(8,6);
u8x8.print(pulse/3.53);
}
ISR(PCINT0_vect)
{
pulse=pulse+1;
}