SPENGLER-G-METER
SPENGLER G-METER Bruce Wright
Used in this build:
Arduino Microcontoller https://www.amazon.com/dp/B01EWOE0UU/re ... UTF8&psc=1
DFROBOT Gravity: 1602 LCD Keypad Shield For Arduino https://www.amazon.com/dp/B006D903KE/re ... UTF8&psc=1
Tape Measure holder https://www.amazon.com/dp/B0006GPZ7Q/re ... ZSEGAT7RG8
[as a note I have not had luck using the D1 robot board as a replacement]
all credit Bruce Wright, free as stated and forever