物联网水控系统硬件部分
硬件部分实现记录
PCB&电路图
esp32-wroom-32E
下载电路
串口烧录
- IO1(tx)&IO3(rx):与CH340C连接
自动烧录
烧录条件
原理图
CH340C
RXD & TXD 串口输入输出
D+ & D- USB 输入
VCC
Positive power input terminal, requires an external
0.1uF power decoupling capacitor.
去耦电容(Decoupling Capacitor)是电子电路设计中常用的一种电容,主要用于稳定电源电压,减少电源噪声和干扰,确保电路的正常工作。
V3
When the power supply voltage is 3.3V, connect
VCC to input the external power supply. When the
power supply voltage is 5V, connect an external
decoupling capacitor with a capacity of 0.1uF.
RTS# & DTR#
进行esp32的自动下载电路
DTR#
MODEM contact output signal, data terminal ready,
active low (high)
RTS#
MODEM contact output signal, request to send,
active low (high)
继电器模块
PCB
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