SINCLAIR Scientific re-make

Resources

Reversing Sinclair's amazing 1974 calculator hack Project page & build instructions: Sinclair Scientific Calculator Emulator

Programming

The board uses Arduino Nano:

• Software: https://gitlab.com/arduinoenigma/ArduinoNanoSinclairScientificCalculator/-/tree/master?ref_type=heads
  • Use https://gitlab.com/arduinoenigma/ArduinoNanoSinclairScientificCalculator/-/blob/master/SinclairScientific7/SinclairScientific7.ino?ref_type=heads (SinclairScientific7.ino)
  • And add library ZIP from: https://gitlab.com/arduinoenigma/ArduinoNanoSinclairScientificCalculator/-/blob/master/SinclairScientific1/libraries/Arduino-GPIO-master.zip?ref_type=heads (SinclairScientific7.ino)
  • I have changed serial sttings on line 310 to use more standard baud rate
    

    diff --git a/SinclairScientific7/SinclairScientific7.ino b/SinclairScientific7/SinclairScientific7.ino
    index 487d8f2..ec2e143 100644
    --- a/SinclairScientific7/SinclairScientific7.ino
    +++ b/SinclairScientific7/SinclairScientific7.ino
    @@ -307,7 +307,7 @@ void setup()
     {
       // put your setup code here, to run once:
    
    -  Serial.begin(2000000);
    +  Serial.begin(115200);
    
       // makes it easier to see if an arduino is programmed or not
       Serial.print(F("SINCLAIR v7 092318"));

After using IDE to build and upload you can connect to it via UART to get hello message:

hxd@morgana ~> tio /dev/ttyUSB0
[22:06:24.423] tio v2.7
[22:06:24.423] Press ctrl-t q to quit
[22:06:24.424] Connected
SINCLAIR v7 092318 -Common Anode -Aligned Right