敲擊感應電路相關問題

[HellbroWDR]

作者您好，我參考了您的文檔搭建了使用橋式整流器的電路。使用的板子是arduino leonardo，橋式整流器使用的是DB105(店家DB107缺貨)，電阻使用100k歐姆。
目前遇到的問題是，沒有裝橋式整流器的話，敲擊可以感測到，但是有裝的話就感應不到敲擊。想請問作者有遇到這種狀況嗎？

[ShikyC]

Please first check the output of the rectifier (with a multimeter or an oscilloscope) to verify it's working. Also, please note although the input polarity doesn't matter, the output DOES. You should connect + to an analog input pin and - to the ground. Can you show me a picture of your circuit?

[HellbroWDR]

棕線接analog input，黑線接GND

然後想問一下作者，模擬器的部分您是用TJAP還是TNDE？我之前試，這兩個模擬器對Keyboard.print跟Keyboard.write沒反應，要Keyboard.press一定時間才有反應

[ShikyC]

Can you test the direct output of the rectifier with a multimeter? Using voltage mode, measure the value between + and - while you hit the drum. Although not accurate, you should be able to see a value change. If not, the rectifier chip might not work for you.
You can also remove the resistors and connect + directly to the analog input of your Leonardo board (unlike ESP32, ATmega32 boards measure analog inputs from 0 to 5V so you don't need to scale down the input voltage) to ensure that it wasn't the issue of the resistors.

[HellbroWDR]

測完發現接上橋式整流器後敲擊沒反應。打算直接用作者您設計的pcb了。
如果之後作者測leonardo有成功的話，再麻煩您分享電路，感謝您。