This intructables show the building steps of Strider Camera Robot V8.

This is the 8th iteration of me building the Strider walking machine, you may find my previous related instructables here:

Supplies

The materials required are very similar to Strider Camera Robot V6, just a little bigger Lipo batteries:

TTGO T-Journal ESP32 Dev Board
OV2640 or OV3660 camera module with a little bit longer FPC
Two 4.3g servo with 360 degree rotation option
Two 702024 Lipo Batteries
1mm Diameter stainless steel rod
SMA Coaxial PCB mount Jack with a short SMA Antenna or other PCB Antenna
Four 4mm M2 screws
Around 60-100 pieces of 4mm (actually 3.6mm) M1.2 screws

Step 1: 3D Print

Please download and 3D print the parts at Thingiverse:

https://www.thingiverse.com/thing:6324533

leg1 - leg4 print 12 copies
body and side print 2 copies
all other parts print 1 copy

I suggest crankshaft mold should be the first printing, so that you can do next step in parallel.

Step 2: Prepare Crankshaft

The stainless steel Crankshaft is the special parts in this version, it should be less friction compare with V6. Stainless steel rod is a little bit hard to bend, I am using a special Dental Pillar to help me make it.

First you should mark the rod with all the bending point, it is at:

3mm, 7mm, 14mm, 18mm, 22mm, 28mm, 32mm, 36mm, 42mm, 46mm, 48mm

It will make a crankshaft in 4mm radius. Adjust the crankshaft in the right shape is arbitrary, so I make a 3D model crankshaft mold to help me check it in the right track as show at the above video.

Step 3: Prepare Axis

Cut four 25mm long stainless steel rod for the leg axis.

Step 4: TTGO T-Journal Antenna Patch

T-Journal have an edge mount SMA connector originally. I would like the antenna perpendicular to the board, so I resoldering and replace it. There are various 2.4GHz antenna options you can find on the web.

Step 5: Servo Patch

The servo patching is as same as Strider Camera Robot V6 step 2 servo patch.

Step 6: Servo Horn Patch

Install the servo horn to the servo. Use a 1 mm drill bit drill a hole from the horn side to the axis center hole. the servo axis will also make a pit at the same time.

Step 7: Servo Mount Assembly

Step 8: Install Servo Mount

Step 9: Install Camera

Step 10: Body Assembly

Step 11: 2 Lipo Batteries

In the body assembly video, it only installed 1 Lipo battery. Actually the body designed 2 room for installing two 702024 Lipo batteries. 2 batteries can give more battery life and better body weight balance.

Step 12: Legs Assembly

Step 13: Crankshaft Assembly

Step 14: Install Legs

Step 15: Test Run

Step 16: Soldering Work

Step 17: Install T-Journal Board

Step 18: Program

The program step is as same as the Strider Camera Robot step 26-28.

Step 19: Full Making Video

Step 20: Robot Family

Step 21: Enjoy!

It's time to show off this tiny gadgets to your friends!

Step 22: What's Next?

This version 3D model reserved rooms for IR sensors, it can help to make the robot more intelligent. Hardware and software details will update soon...