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Footroller

HCI device using feet motion factor.

esp32 - WiFi - Python

19/6/2记录

  • adc是时延的主要原因 一个100ms太久,故而换了模拟开关来读取8个电阻。响应比较快,而且本来对压力的精度要求就不是很高
  • 重写了python的接收,还是写成类比较方便。由于使用者的脚大小不一样,把8个电阻降到3个区域(上,左/右,下)的维度判断

苦逼的前言

因为想连单片机和各种智能设备,用了dfrobot的esp。esp原装没货买了ble版本(客服跟我说要两三个月的!一个月不到就上了!),虽然本来对ble就不是很熟,但是买都买了。。。

鼓捣几天觉得实在不行,ble的api在不同平台上都要重新开发。。。windows提供的sample又各种bug(或许我这里环境不太对。。)。所以,最后还是用WiFi吧。。TCP

然后C#的socket不知道为什么收不到esp发起的连接。行吧,既然要通用,就用python吧。pyautogui

但也有一些问题待解决:

  • 一个没有输入设备的外设怎么设置连接……
    • 设备端开一个蓝牙advertisement告诉它吗…… 听起来解决方案一点都不简洁……
    • 还是留个串口让用户自己初始化一下吧!
  • python界面 唔 要学

整体构思

  • MCU ===》 PC
    • 运动数据 (《==先做这个
  • PC ===》 MCU
    • *休眠/节电
    • MCU怎么知道WiFi信息……
      • 增加交互设备/方式 - 串口通信 - 顺便可以调一下参数
      • 复杂的ble广告BLE Scanner

思考记录

传感器灵敏度

传输的选择

让单片机作运算再传数据

  • 性能

还是单片机只传数据,接收端处理。

  • 一些无用的数据(无变化数据的重复

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