Added some build notes of my struggles

Pi/PiPower.py

@@ -11,7 +11,6 @@ import time
 import os
 
 GPIO.setmode(GPIO.BCM)
-GPIO.setup(15, GPIO.OUT)
 GPIO.setup(18, GPIO.IN, pull_up_down=GPIO.PUD_DOWN)
 
 hasShutdown = False
@@ -24,7 +23,6 @@ def shutdownSignal(channel):
 
 
 GPIO.add_event_detect(18, GPIO.RISING, callback=shutdownSignal, bouncetime=300)
-GPIO.output(15, GPIO.HIGH)
 
 
 try:

Pi/notes.txt

@@ -33,4 +33,21 @@ enable_uart=1
 
 I have encountered this default of 0 in RetroPie, but I've seen
 reports for a standard installation as well:
-https://www.raspberrypi.org/forums/viewtopic.php?f=28&t=141195
+https://www.raspberrypi.org/forums/viewtopic.php?f=28&t=141195
+
+
+
+
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+You can connect power directly to PP1 or PP2 (+5V) and PP5 (GND).
+
+Add some capacitors between de ATTiny85's +5V and GND pins.
+I learned the hard way that if you don't, the power will drop to the
+ATTiny and it'll reboot as soon as the Pi draws power, taking the
+relay and thus the Pi with it. This cycle repeated and killed my Pi.
+
+I bodged it and added in order two 100 nF ceramic capacitors, one 10 uF
+electrolytic and one 470 uF electrolytic to get stable results.
+I'm still learning electronics basics, but I recognize this is bad design.
+Maybe a diode would've helped to prevent the Pi from draining the
+capacitors immediately?