自制”美的变频空调检测仪”教程

美的专区评论3,2813字数 1274阅读4分14秒阅读模式

2021年4月14日更新

说明

  本人不卖硬件、不卖成品、和硬件商家无任何关系、非美的厂家人员,这个教程主要是为了方便广大维修工,本人是业余独立开发者,bug避免不了,但我会持续不定时更新,不断完善,感谢!

  为避免不必要的纠纷,本项目(程序)不开源、免费使用!

  不包括外壳,成本不超过80元,所有硬件,请自行淘宝搜索

成品演示

硬件需求

esp-32开发板

要求

  • 开发板模组的核心ic需是双核的

推荐

ESP32_DEVKIT_V1

模组型号: ESP32-WROOM-32,核心芯片: ESP32-D0WDQ6

ESP32-DevKitC

模组型号: ESP32-WROOM-32D,核心芯片: ESP32-D0W0

说明

LCD屏幕

要求

  • 分辨率:256x160
  • 驱动器:ST75256
  • 通讯方式:SPI
  • 供电电压:3.3v

推荐

晶联讯JLX256160G-910-PN

视窗尺寸:70.3mm*45.5mm,半透半反式屏幕,不带字库ic,参考价格:51.5元+邮费7元

逻辑电平转换小板

要求

  • 稳定通讯波特率>=1200bps
  • 可实现3.3V与5V的逻辑电平互转

说明

  其实可以基于nmos管自制

dcdc升压模块

要求

  • 输出电压:5V
  • 输出电流:≥500ma
  • 输入电压:2.5V~VOUT

说明

  好像此方案不可行

LDO

要求

  额定电流esp32开发板需要3.3v >=500ma的供电,最低电压需>=2.6v,JLX256160G-910-PN背光电流约3.3v 100ma

  • 输出电压 = 3.3v
  • 额定电流 >= 500ma
  • 输出压差 <= 500mv

推荐

Richtek rt9013

有好多比这个更适合的,Richtek、Ti的都有很多,可是淘宝不好买,只有用这个了

其它
  • 微动开关、漆包线等

固件烧录

方式一:通过命令行烧录

准备

  1. 安装Python3
  2. 安装esp32tool包
pip install esptool

 

  1. 安装驱动

烧录方法:

  1. 擦除整个闪存
    esptool.py --chip esp32 --port COM3 erase_flash
  2. 烧录固件
    esptool.py --chip esp32 --port COM3 -b 460800 write_flash -z 0x0000 program.bin

方式二:通过flash下载工具烧录

准备

  1. 安装驱动

烧录方法:


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