RoastSharp

Introduction

An open-source, windows forms, .NET Framework application used to log coffee roasts
Currently targetting .NET Framework 4.8
This application uses the open-source library LiveCharts

Features

• Provides a live chart of bean temperature and rate over time
• Tablet friendly
• Logs bean temperature via serial com port
• Saves log to a CSV file
• Provides quick roasting event buttons such as first crack start
• Provides a generic event button
• Screenshot of application (alt+prtscrn) allows for simple roast comparisons

Running

Download the latest release and run RoastSharp.exe

1. Click Settings
2. Change settings if applicable
3. Click Connect
4. Once the smoothed bean temperature is active, click Start
   • If you would like to mark your roast, click the FC Start, FC End, SC Start, SC End, and Event buttons where applicable
5. When the roast is complete, click End

Temperature Sensor

RoastSharp reads temperature from a serial port. The expected format is a single temperature measurement in deg Celsius per line.

21.50
22.75
24.00
.
.
.
223.75

This was tested with a MAX6675 chip connected to an arduino using this library and the following application:

#include "max6675.h"
#include <SPI.h>

int thermoSO = 8;
int thermoCS = 9;
int thermoSCK = 10;

MAX6675 thermocouple(thermoSCK, thermoCS, thermoSO);
  
void setup() 
{
  Serial.begin(38400);
  
  delay(1000);
}

void loop() 
{
   Serial.println(thermocouple.readCelsius());
   delay(300);
}

Although the MAX6675 chip runs at just over 3 Hz, RoastSharp should technically work at any rate (untested!)

Development

Development can be done through Visual Studio
The file names are self descriptive