7.10.22
I am reconnecting the I2C LCD screens to the Raspberry PI 4B.
From Left to Right
Raspberry Pi 4B 8GB with T-Cobbler
Bi directional Logic Level Converter (BD-LLC), little red IC
Arduino 4: Arduino Hero (Arduino master until BD-LLC is configured)
Arduino 5: Arduino Hero
Arduino 6: Arduino Hero
Arduino 7: Arduino Mega 2560
Arduino 8: Arduino Mega Wifi
Arduino 9: Arduino Uno R3
Arduino 10: Arduino Hero
Arduino 11: Arduino Hero
Arduino 12: Arduino Hero
You can see the I2C LCD addresses at 24 and 27.
i2cdetect -y 1
0 1 2 3 4 5 6 7 8 9 a b c d e f
00: — — — — — — — —
10: — — — — 14 15 16 17 18 19 1a 1b 1c — — —
20: — — — — 24 — — 27 — — — — — — — —
30: — — — — — — — — — — — — — — — —
40: — — — — — — — — — — — — — — — —
50: — — — — — — — — — — — — — — — —
60: — — — — — — — — — — — — — — — —
70: — — — — — — — —
LCD 0x24 is displaying information from each Arduino to Raspberry PI that has each of the 9 Arduino devices checking in.
INO files for Arduino device