Can anyone find some time to help a learner with some questions about the Automation HAT layout?
I think I have mapped out most of the RPi pins to the Automation HAT layout from the PinOut GPIO diagram (https://pinout.xyz/pinout/automation_hat#), but I am left with a number of questions that don’t seem to be answered here (https://github.com/pimoroni/automation-hat). If there is another reference source anywhere I couldn’t find it…
I am trying to locate the BCM 2 (SDA) GPIO Pin 3 & BCM 3 (SCL) and GPIO Pin 5 to attach an LCD 1202 12x2. They are pictured on the PinOut diagram but I can’t see them on the HAT.
I don’t understand the breakout header
a) #1 on left side (3V3)
Is this just another 3.3v source - in which case which GPIO pin does it map to?
b) #2 on left side (#25)
Is this GPIO pin 25 which according to my reference is another GND?
c) #3 on left side (ADC4)
Is this the Input mentioned in the Analog Usage info (“Three of the four analog inputs on Automation HAT are 24V tolerant, with a forth (!) 3.3V input in the breakout header”) - in which case which GPIO pin does it map to?
d) #4 on left side (GND)
Is this just another GND source - in which case which GPIO pin does it map to?
e) #1 on right side (MISO)
Presumably Master In Slave Out GPIO Pin 21?
f) #2 on right side (MOSI)
Presumably Master Out Slave In GPIO Pin 14?
g) #3 on right side (SCLK)
Presumably Serial CLock GPIO Pin 23?
h) #4 on right side (CE0)
Presumably Chip Select 0?