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aq sync and refactors; start hw.md
author drewp@bigasterisk.com
date Tue, 13 Aug 2024 22:38:39 -0700
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# https://cdn.shopifycdn.net/s/files/1/0617/7190/7253/files/T-display-pin-diagram_1024x1024.jpg

# https://www.aqmd.gov/docs/default-source/aq-spec/resources-page/plantower-pms5003-manual_v2-3.pdf


    # pms pin 1 (blk) to 5V
    # pms pin 2 (red) to gnd NEXT TO ESP PIN 12!!
    # pms pin 3 (blk) NC
# original setup
# GPIO13/RXD2 num 16 = pms tx (pin 5 blk)
# GPIO15/TXD2 num 17 = pms rx (pin 4 red)
# or on T-Display ESP32, 
#   pms tx pin 5 to esp 13
#   pms rx pin 4 tp esp 17
#   led strip: +5/gnd like pms; DIN to esp 27