I’ve been working on a redesign of the original reflow controller.  Here are the features for the new board:

1. Four MAX31855 Type-K Thermocouple interfaces
2. DS3234 Real Time Clock with battery backup
3. FT231x USB
4. XBee or Bluetooth Wireless
5. MCP23008 I/O Expanders for 2-wire expanded communication
6. ULN2803 Darlington buffered output relay/SSR control
7. Internal or external micro SD interface
8. External LCD I2C interface/input
9. ATMega 1284P TQFP AVR with Arduino bootloader
10. 16 MHz Crystal

Take a look at the new board:

 I’ll post more on this project in the coming days.  I’ll be offering this project as a full kit for those who are interested.