Construction information.

Download Construction.txt.

timer board.

timer board.

A PC-board is now available.

LCD Display and I2C bus.

Download LCD_I2C.txt.

LCD Terminals.	LCD Terminals.	Backlight on.
Backlight off.	Backlight on.	Backlight off.
Backlight on.	Backlight off.	I2C type 1 Addr. 0x20
I2C type 2 Addr. 0x27	I2C type 2 info	I2C type 1 0x27 address change
Adjust backlight	Check for shorts here!

Serial interface.

Download Serial.txt.

Bluetooth module with enable.	Bluetooth module with enable.	Bluetooth module no enable option.
Bluetooth module no enable option.	USB to TTL serial RS-232 PL2303 cable.	USB to serial RS-232 PL2303 cable.
USB to TTL serial CH340 module.	USB to TTL serial CH340 module.	USB to TTL serial CP2102 module.
USB to TTL serial CP2102 module.	RS-232 to TTL level converter module.	RS-232 to TTL level converter module.

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