Camera NanoTank

This intructables show how to use Seeed Studio XIAO ESP32S3 and corresponding camera module to build a NanoTank.

Supplies

Seeed Studio XIAO ESP32S3 Sense

751626 Lipo Battery

DRV8833 Motor Drive Board

2 x Mini 3.7V 6mm Coreless motor (47RPM)

2 x 1 inch rubber band

4 x 12 mm flat head M2 Screw

(Optional) 2.4 GHz T shape antenna

What Is NanoTank?

The first time I see NanoTank is at @ushineko3n Twitter. The NanoTank main idea is using the motor case as the axis, this allow the tank become much smaller in size. This project reuse the NanoTank design to build this tiny toy.

Ref.:

https://twitter.com/ushineko3n/status/1490627407963095041

https://itoi.jp/M5Stack.html#NanoTank

3D Print

Please download and 3D print the models at Thingiverse:

https://www.thingiverse.com/thing:5994079

Number of prints required:

motor wheel  x2
lower wheel  x4
motor gear   x2
body         x1
side         x2

Software Preparation

Arduino IDE

Download and install Arduino IDE latest 1.x version if not yet:

https://www.arduino.cc/en/software

Arduino-ESP32

Follow installation step to add Arduino-ESP32 support if not yet:

https://docs.espressif.com/projects/arduino-esp32/en/latest/installing.html

XIAO ESP32S3

Follow Seeed studio Wiki to familiar XIAO ESP32S3:

https://wiki.seeedstudio.com/xiao_esp32s3_getting_started/

ESP Async Web Server Library

Download latest ESPAsyncWebServer libraries: (press "Clone or Download" -> "Download ZIP")

https://github.com/arjenhiemstra/ESPAsyncWebServer

Import libraries in Arduino IDE. (Arduino IDE "Sketch" Menu -> "Include Library" -> "Add .ZIP Library" -> select downloaded ZIP file)

Arduino ESP32 filesystem uploader

Follow the installation steps to install Arduino ESP32 filesystem uploader if you are not yet do it:

https://github.com/lorol/arduino-esp32fs-plugin

FSBrowserPlus

Download the FSBrowserPlus at Github:

https://github.com/moononournation/FSBrowserPlus

FSBrowserPlus was developed in my previous projects, you can see more details at:

https://www.instructables.com/Strider-Camera-Robot-V6/

https://www.instructables.com/Strider-Camera-Robot-V2/

https://www.instructables.com/Strider-Camera-Robot/

https://www.instructables.com/Camera-Robot/

Upload Program

Open the "FSBrowserPlus.ino" at Arduino IDE
Modify the WiFi and other settings in "FSBrowserPlus.ino" header
Select (Uncomment) your camera dev board in "camera_pins.h", this project should select CAMERA_MODEL_XIAO_ESP32S3_ROBOT
Select Board options according to Seeed studio Wiki
Press "Upload" button to compile and upload program
Select "ESP32 Sketch Data Upload" in "Tools" menu
Select FS Type to "LittleFS" and press "OK" button

Soldering Work

MTY4ODg1NTkyNTI4NTEyMg_210545_f-CsRXGa2Rtkt_T3_1679553944.png

Please find the full soldering work video at bilibili:

https://www.bilibili.com/video/BV1x24y1H79h

The GPIO assignment had been revised many times, here are the final connection summary:

XIAO ESP32S3   DRV8833 Drive Board   Other Parts
============   ===================   ===========
D0 (GPIO1)  -> IN1
D1 (GPIO2)  -> IN2
D3 (GPIO4)  -> IN3
D4 (GPIO5)  -> IN4
BAT-        -> GND                -> Lipo -ve
BAT+                              -> Lipo +ve
3V3         -> VCC
               OUT1, OUT2         -> Motor 1
               OUT3, OUT4         -> Motor 2