Abbreviations - crestlinesoaring/ArduinoWeatherStation GitHub Wiki

M = Arduino Mega2560
Eth= Arduino Ethernet Shield (least expensive version w/o onboard reset chip)
G = Glueboard, a custom made adapter board stacked between M and Eth. Holds Pboot circuitry and DC/DC converter etc.
U = Ubiquiti long range radio link for internet communications
CC = Battery Charge Controller
BB = Brain Box, the lower, accessible enclosure, sealed, contains battery, electronics & some mechanical components.
BME= BME280, small sensor boards, reads temperature, humidity. One is inside the sealed BB, the second is for external readings.
CB = Camera Box, top enclosure, holds electronics for the cameras (including Ethernet switch) and external BME.
AJX= Andy Jackson Airpark (LZ)
HG = Hang glider
PG = Paraglider
LZ = Landing Zone
CS = Crestline
CSS= Crestline Soaring (Club) Web Server
MWX = Marshall Weather Station
MarshPi = Raspberry Pi dedicated to the MWX, located at LZ
JWX = Jeff's Weather Station
JeffPi = Raspberry Pi dedicated to the MWX, located at Jeff's office down the hill
SaS= Save data and Send later (in a batch). Saves much energy since U and Eth need to be turned on less often.
Pboot = Power reboot, i.e. power down everything, wait a few seconds, re-power it
WD = Watchdog Timer, causes (soft) reboots by timeouts, if program hangs or crashes.
RTC= Real Time Clock, ZS-042 DS3231, a small and accurate time keeping board with added 2MBit (262144 Bytes) EEPROM.
SQW= Square Wave, a programmable pin from the RTC
BME= BME280, small sensor boards, reads temperature, humidity. One is inside the sealed BB, the second is for external readings.
C = Temperature in Celsius (readout from BME)
F = archaic, imperialist british temperature scale, must be converted from BME's actual C
INA= INA219, small sensor boards, read Voltage and Current (A). One is for the Solar Panel, the other at the battery.
i2c= a communication bus, used to talk to sensor boards.
Rel1..Rel4 = one of four Relais of the Relais board