Hardware

I'm having a strange issue with my BiBoard V1.0- when I plug it into my computer, it is making a strange low pitched buzzing noise, but still makes the usual beeps indicating it is connected to the computer. My computer is not recognizing when I plug it in, and type ls /dev/ttyUSB*

I've tested on a desktop as well as my laptop, and have the same error. But when I connect a different BiBoard V0_2, I do not have the error, and my computer is able to recognize the connection.

Is this a faulty hardware issue?

Also, when I turn the faulty board on and don't have it connected to a computer, I am able to control the robot with my raspberry pi connected to the tx2 and rx2 ports.

I recently got my hands on the Grove Vision AI V2 module, and I’d like to share some ideas with the community to get your feedback:

While the native OpenCat control via the camera module seems straightforward, I’m exploring ways to integrate this module into a larger framework. Specifically, I’d like to create a ROS node for the video stream from the sensor, enabling real-time observation on a local PC.

From what I’ve seen online, tutorials for streaming video over Wi-Fi with the module typically use an additional ESP32S3 alongside the Grove Vision AI V2 to enable Wi-Fi capabilities. However, I believe this extra module might be unnecessary since the BiBoard already has built-in Wi-Fi. It seems feasible to connect to Wi-Fi directly through the BiBoard, eliminating the need for the ESP32S3.

Furthermore, if the BiBoard is connected to Wi-Fi, it should be possible to run a ROS node directly…

Somehow, the board bricked itself when booting. I had been following the instructions at https://docs.petoi.com/arduino-ide/upload-sketch-for-nyboard, and had returned to the completely plain vanilla OpenCat.ino sketch.

During the boot beeps, I opened the serial port (the hardware serial<--> USB dongle was already installed on the Nyboard). Surprisingly, the board immediately stopped beeping, and has since been completely unresponsive. I cannot communicate with it via Arduino programmer, I don't see any output on the serial port, nor can I upload the bootloader by following instructions at https://docs.petoi.com/technical-support/burn-bootloader-for-nyboard.

Here is the output I get when trying to upload the bootloader:

avrdude: Version 6.3-20190619
         Copyright (c) 2000-2005 Brian Dean, http://www.bdmicro.com/
         Copyright (c) 2007-2014 Joerg Wunsch
         System wide configuration file is "/Users/kenz/Library/Arduino15/packages/arduino/tools/avrdude/6.3.0-arduino17/etc/avrdude.conf"
         User configuration file is "/Users/kenz/.avrduderc"
         User configuration file does not exist or is not a regular file, skipping
         Using Port                    : /dev/cu.usbmodem1101
 …

I've been designing an alternative head for Bittle since April. It can be mounted on the existing head servo and equipped with an ultrasonic distance sensor.

Edit: The files are online at https://www.printables.com/model/993292-servo-rotatable-cat-head-with-slot-for-distance-se