mdb-esp32-master
nodestark
ESP32-based MDB Vending Machine Controller (VMC) with support for bill validators, coin changers, cashless devices, and EVA-DTS DEX/DDCMP telemetry for vending machine integration and management.
Components (27)
| Reference | Value | Description |
|---|---|---|
| Q8 | MMBT3904 | 0.2A Ic, 40V Vce, Small Signal NPN Transistor, SOT-23 |
| U1,U4 | TLP785 | DC Optocoupler, Vce 80V, CTR 50-200%, DIP4 |
| U2 | AP2112K-3.3 | 600mA low dropout linear regulator, with enable pin, 3.8V-6V input voltage range, 3.3V fixed positive output, SOT-23-5 |
| U3 | ESP32-S3FH4R2 | |
| U17 | LM2594HVM-5.0 | 5.0V, 0.5A SIMPLE SWITCHER® Step-Down Voltage Regulator, Maximum VIN 60V, SOIC-8 |
| C1-C3,C15 | 1uF | |
| C4 | 1.8pF | |
| C5,C6 | 12pF | |
| C7,C12,C14,C16,C17 | 0.1uF | |
| C13 | 10uF | |
| C31,C32 |