08

INPUT DEVICES

This week, I tried two types of input devices: step response for force sensing and camera for a vision system.

Step response: I followed the examples from Neil and fabricated the board. To code this, I also made a USB to Serial and Serial to UPDI board. Following Miana's suggestion, I also add a wire between VCC (Serial-UPDI) to VCC (txrx) so that we don't need another power source. I met problems uploading the code to the board. Also thanks to Miana, I eventually found out it worked after changing to a lower version (1.8.19) of Arduino IDE.

Camera: I also tried an ESP32-CAM for a potential vision system. I found this tutorial extremely helpful. The process was pretty smooth and I eventually achieved object detecting with OpenCV's pretrained networks.

Tools: Same as Electronic design week, plus ESP32-CAM.
Date: 11.02.2022 - 11.08.2022






PROCESS

THIS IS HOW I GOT THERE

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The schematics of step response (from Robert Hart).



Coding mode.



Successfully upload the code using Arduino 1.8.19.



Sensing mode.

Step response signal monitoring.



The ESP32-CAM.



Object detection with OpenCV and ESP32-CAM.



Object detection with OpenCV and ESP32-CAM.

How to Make (Almost) Anything | Fall 2022