🔹 ESP32 → Arduino (SERIAL)
ESP32 GPIO17 (TX2) → Arduino RX
(optioneel) ESP32 GPIO16 → Arduino TX
GND ↔ GND
🔹 Arduino → HUB08
D2 → D0
D3 → CLK
D4 → LAT
OE → GND
D5 → A
D6 → B
D7 → C
D8 → D
5V → VCC
GND → GND
🔹 OLED (ESP32)
VCC → 3V3
GND → GND
SDA → GPIO21
SCL → GPIO22
100 nF condensator bij OLED
🔹 BCD (ESP32)
B0 → GPIO32
B1 → GPIO33
B2 → GPIO25
B3 → GPIO26
B4 → GPIO27
B5 → GPIO14
GND → GND
➡️ INPUT_PULLUP → geen weerstanden nodig
* HUB08 (matrix led) to ARDUINO pin connection
* LA / A -> Digital Pin 4
* LB / B -> Digital Pin 5
* LC / C -> Digital Pin 6
* LD / D -> Digital Pin 7
* S / CLK -> Digital Pin 13
* R1 / R -> Digital Pin 11
* OE / EN -> Digital Pin 3
* L / LAT / STB -> Digital Pin 2