ESP32 Smart City Controller
Table
| RefDes | Part / Value | MPN or Type | Qty | Notes |
|---|---|---|---|---|
| U1 | ESP32 DevKitC 38-pin | ESP32-DEVKITC-VE | 1 | Main controller |
| J1 | 2-pin 5 mm terminal | XY301V-A-5.0-2P | 1 | 5 V input |
| J2 | 1x4 2.54 mm header | THT pin header | 1 | HC-SR04 |
| J3–J5 | 1x3 2.54 mm headers | THT pin headers | 3 | Servo, mic, pot |
| J6–J11 | 1x2 2.54 mm headers | THT pin headers | 6 | LED channels |
| R1–R6 | 220 Ω 5%, 0603 | Generic | 6 | LED current limiting |
| R7 | 10 kΩ 1%, 0603 | Generic | 1 | ECHO divider upper |
| R8 | 18 kΩ 1%, 0603 | Generic | 1 | ECHO divider lower |
| R9 | 470 Ω 5%, 0603 | Generic | 1 | Servo signal series |
| R10 | 10 kΩ 5%, 0603 | Generic | 1 | Servo pulldown |
| R11 | 10 kΩ 5%, 0603 | Generic | 1 | GPIO12 pulldown |
| C1 | 470 uF 10 V radial | Aluminum electrolytic | 1 | Servo bulk, polarized |
| C2, C4, C5 | 100 nF, 0603 | Ceramic | 3 | Bypass |
| C3 | 47 uF 10 V radial | Aluminum electrolytic | 1 | DevKit input bulk, polarized |