BoardPilotDS3231 real-time clock (ZS-042) con ESP32
Alimentazione 3.3-5 V
Bus I2C
Indirizzo I2C
0x68 / 0x57
Misura ora, temperatura
Pin e collegamento all’ESP32
| Pin | Ruolo | Pin ESP32 | Note |
|---|---|---|---|
| 32K | Non collegato all’ESP32 | — | 32 kHz output. Leave unconnected |
| SQW | Interrupt | D35 | Square wave / alarm output (open drain) |
| SCL | Clock I2C (SCL) | D22 | |
| SDA | Dati I2C (SDA) | D21 | |
| VCC | Alimentazione | 3V3 | |
| GND | Massa | GND |
Collegamento consigliato per l’ESP32 DevKit a 30 pin, evitando i pin della flash, di sola lettura e di strapping. BoardPilot lo controlla mentre colleghi.
Codice di partenza (Arduino)
#include <Wire.h>
void setup() {
Serial.begin(115200);
Wire.begin(21, 22); // SDA = GPIO 21, SCL = GPIO 22
Wire.beginTransmission(0x68);
bool found = Wire.endTransmission() == 0;
Serial.println(found ? "DS3231 real-time clock (ZS-042) found at 0x68" : "Not found: check power, GND and SDA/SCL");
}
void loop() {}Fonti
- Maxim DS3231 datasheet, I2C address 0x68 (1101000)
- Microchip AT24C32 datasheet, EEPROM on the ZS-042 board at 0x57 (A0-A2 pulled up)
Provalo in 3D in BoardPilot
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Dati dei componenti: CC BY 4.0, riutilizzabili citando BoardPilot.