(3, 5, 21) GND
(4, 6) VCC
(18) AVCC
(20) AREF

PB6,PB7 (7,8) XTAL TOSC1,2
PB0 (12) PWR
PB1 (13) ???  ---
PB2-PB5 (14-17) Buttons (_, MOSI, MISO, SCK)

ADC6 (19) Battery
ADC7 (22) Moisture
PC0 (23) Moisture
PC1-PC3 (24-26) SSR
PC4,PC5 (27,28) TWI
PC6 (29) RESET
PD0-PD7 (3-32,1-2,9-11) LCD

Connectors:
AC IN (2-pin? 3-pin?)
+5V IN (2-pin)

3x AC OUT (2-3 pin)

I2C (3-pin)
Buttons (on-board?)
LCD (7x data, trimpot, backlight-, GND, +5V) - 16x?
Moisture (3-pin)
prog (+5v, reset, miso, mosi, sck, gnd) 6-pin?