[STEM] Raspberry Pi Pico Open RC Walking Robot

I tried to make a robot that everyone can enjoy.
3D Data, How to Make, and Code are open to the public.

The power supply is designed to be safe with AAA batteries. 
How about as a material for STEM/STEAM education?

Concept is Easy

• Easy to 3D print.
• Easy to gather parts.
• Easy to assemble.
• Easy to program.

Print

Only 4 STL files required.

• 1.  Head & Body
• 2. Arm x2 (left and right are the same)
• 3. Legs
• 4. Covers

Individual Parts (Option)

If you have a small 3D printer or prefer to print each part separately, separate STL files available.
- Parts_*.stl (28 files)

Simple Parts

You can put it together with parts that cost around 7000 Japanese yen (50 US dollars at ¥140/$, excluding PLA filament).

Basic Parts

• (x1) Raspberry Pi Pico W (Wifi, with pin header)
• (x1) Kitronik Simply Servos Board for Raspberry Pi Pico 5339
• (x8) Servo (TowerPro SG90 or Miuzei MS18 or Feetech FS90)
• (x4) AAA Rechargeable Batteries 1.2V or alkaline 1.5V
• (x1) AAAx4 Battery Case
• (x4) M2x8mm Machine Screws with Countersunk Head
• (x80) M2x4mm Tapping screws

For head LED (not required if you don't need LED)

• (x2) 3mm LED (built-in resistor type or regular with resistor)
• (x3) Jumper Wires (female to female) about 10cm
• (x3) Right angle pin header
   

Refer to 'Example_Parts_Tool_List.pdf' for the parts link and more information.

Kitronik Servo Board 5339

There are in two version.

https://kitronik.co.uk/products/5339-simply-servos-for-raspberry-pi-pico

Previous Version (2023) 

  You need USB Connection for moving Robot.
  Though it is not remote control, it works.
 
Current Version  (2024)

   Perfect remote control possible. You don't need USB Connection. 
   Kitronik sent me a new version board last year
   and I confirmed that it works without USB connection.

Unfortunately, it's hard to confirm if the board you're getting is the current version.
It might be best to ask Kitroniks.

Assemble

Refer to 'How To Make_EasyPico.pdf' for complete instructions.

Program

There are sample remote control code files. 
Save the following 6 files in your PICO:

+-- main.py
+-- Config.Change.py (Save as "Config.py" and adjust for your environment)
+-- LedAction.py
+-- ServoAction.py (for exercise)
+-- ServoAction2.py (for walking forward)
+-- SimplyServos.py (Same as this )

Printer
-- Anycubic Mega-S

Filament
-- Anycubic PLA Black
-- eSUN PLA+ Olive Green

Example PLA Setting
-- Layer height - 0.2mm
-- Infill - 20%
-- No generate support
 

Share your code

Sample Code is only walking forward and exercise.
I am happy if you share your code to public.
Turn right, left and backward movement is attractive.

Thank you for

- idea of motion. PLEN:bit and OTTODIY
- share of base remote control code. Michael. 
- quick and sincere response. KITRONIK Support.