Stingpie
Using arduino hardware serial for GU7000
Aug 19, 2021

Thank you. I included a 74HC04, which allowed me to interface with the VFD. I was even able to do a little bit of color dithering! I think I'm gonna have a lot of fun with this. 

Using arduino hardware serial for GU7000
Aug 19, 2021

yes, It's a GU256x64D-7000BX

Using arduino hardware serial for GU7000
Aug 19, 2021

Hello, I am trying to connect more advanced microcontrollers to my GU7000, and the arduino library that comes with the display didn't seem to work with the microcontroller I was using (RP2040). I looked into the library, and it looks like the serial interface is implemented in software. Is there any good reason for this? I've tried using the hardware serial library to interface with the VFD, and I've been able to display characters, but there are weird quirks with it. For example, after every character I send, I have to send an FF byte to actually display the character. In addition, the character codes seem to be backwards. 

I am using the earlphilhower raspberry pi pico compiler. 

here is the code I have written so far:

void setup() {
  // put your setup code here, to run once:
  Serial.begin(115200);
  Serial1.setRX(17);
  Serial1.setTX(16);
  delay(500);
  Serial1.begin(115200);
  
  init();
  clear();
  
  
  
}
 void loop() {
  // put your main code here, to run repeatedly:
  delay(500);
  clear();
  for(char i=32;i<255; i++){
    
    
    
    delay(1);
    
    text(i);
  }
  
}

void print(String s){
  for(byte i=0; i     command(s[i]);
  }
}
void text(char c){
  command(255-c);command(255);
}

void command(char c){
  Serial1.write(c);
  
}
void init(){
  command(255-0x1b);command(255-0x40);
}
void clear(){
  command(255-0x0c);
  
}