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ESP-WROOM-02相互通信・その3

https://blog.with2.net/link/?1965529

ESP-WROOM-02相互通信・その3

https://blog.with2.net/link/?1965529

前回記事「ESP-WROOM-02相互通信・その2」の続きです。複数の入力信号をTOUT端子に接続し、それぞれ抵抗分圧した異なる電圧値をif文で場合分けし、LEDを点滅するところまでは出来ました。

今回はサーバー側に実際にDCモータを接続して前後進、停止、旋回をさせてみようというものです。

モータドライバはDRV8835というものを今回初めて使いました。非常に小型なわりには2台のDCモータをドライブ出来るというすぐれものです。

2018.10.24 改訂 抵抗分圧回路1.8kはGNDに接続が正しい

早速、試験してみました。クライアント側のタクトスイッチ三個はそれぞれ前進、後進、右旋回に割り当てています。なにもスイッチを操作しないときには停止信号をサーバーに送ることにします。これでスイッチ三個で4動作が可能です。

問題なく動作します。実際には完成までには試行錯誤がかなりあり、納得出来ていない現象もありますが結果オーライということにします。この辺りESP-WROOM-02にはAruduinoに比べるとクセがあるのかもしれません。

ともかくこれでルータを経由せずにESP-WROOM02同士でラジコン化が可能になりました。

さて回路の目途はついたので、実機をどうするかの構想に入りたいと思っています。

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