ESP32 --- st7735s GND --- GND 3.3V --- VDD D23 --- SDA D18 --- SCL D22 --- RST(RES) D21 --- DC D16 --- CS VIN --- BLK 上面的D23,D18就是GPIO对应的编号,例如ESP32硬件引脚标注的D23对应GPIO23 0x04 烧录程序 #include<TFT_eSPI.h> // Graphics and font library for ...
电路非常简单,我使用了 GPIO 引脚D23、D22、D21、D19、D18、D5、D25 和 D26来控制 8 个继电器。 GPIO 引脚D13、D12、D14、D27、D33、D32、D15 和 D4与按钮相连,可手动控制 8 个继电器。 IR Receiver的输出引脚与 GPIOD35相连。 对于蓝牙控制,您可以使用 ESP32 连接任何蓝牙或 BLE 模块。在上面...
第4 步:连接 MAX30100 脉搏血氧仪与 ESP32。 电路 该物联网脉搏血氧仪的电路组件非常简单。 OLED 显示屏和 MAX30100 血氧计传感器均可与 I2C 配合使用。因此,将两个模块的 I2C 引脚(SCL 和 SDA)与 ESP32 的 D21 和 D22 引脚连接。 同样,为 VCC 提供 3.3V 电源并将两个传感器的 GND 引脚接地。基本上...
[ "oled1:SDA", "esp:D21", "green", [ "v-103.15", "h173.6", "v86.85" ] ], [ "bz1:1", "esp:GND.2", "green", [ "v8.67", "h101.46", "v72.79" ] ], [ "bz1:2", "esp:D27", "green", [ "v8.67", "h96.78", "v53.56" ] ], [ "oled1:SCL", "esp:D22", ...
ESP-WROOM-32 NodeMCU-32S ESP32 3.3V GND D22/GPIO22/SCL D21/GPIO21/SDA OK optional display GC9A01 round TFT 1,28" 240x240 (e.g. link): connect GC9A01 driven round TFT display (240x240) with your ESP8266/ ESP32 board (VCC, GND, SCL, SDA, DC, CS, RST, BLK) pinning for diff...
D21(GPIO21, I2C SDA) on ESP32 goes toSDAon CJMCU-531 D22(GPIO22, I2C SCL) on ESP32 goes toSCLon CJMCU-531 Not currently used, but would be required for multi-sensor or low power sentinel use. D5(GPIO5) on ESP32 goes toXSHUTon CJMCU-531 (shutdown control) ...
探索 直播 放映厅 短剧 I2C接口的IO扩展板 I2C接口的IO扩展板,我们看到这个小实验,大家先看到这里,这是一个ESP32的开发板,这连接了四个引脚,这两个分别是D21 D22,那对应的是I2C的SDA SDL,控制的设备有1 2 3 4 4个LED,还有一个OLED的显示屏,相当于是控制的5个设备,那么怎么用两根线控制5个设备,那这个...
static uint8_t RelayPin1 = 27; //D23 static uint8_t RelayPin2 = 26; //D22 static uint8_t RelayPin3 = 25; //D21 static uint8_t RelayPin4 = 33; //D19 static uint8_t RelayPin5 = 13; //D13 static uint8_t DHTPIN = 19; //D18 //static uint8_t SwitchPin1 ; //D...
To interface DS3231 with ESP32, you need to install theRTClib libraryfirst. After installing this Adafruit RTC library, you can connect your ESP32 board with DS3231 using the I2C protocol. To connect ESP32 I2C with the RTC DS3231 module, you can use the ESP32 D21 and D22 pins. ...
You can either use a breaboard to place the ESP32 or solder a very simple shield like I did with male headers connected parallelly to each pin on ESP32. I added some extra male headers for some pins like Vin, Gnd, D21 and D22 as these will be used the most. ...