I deigned a removable battery pack and an arm for the top of the spot micro robotic dog on thingyverse. This is because as I completed the robot based on cyber ones videos I found it too simple and wanted to add an arm and a removable battery pack for safer charging. For assembly and wiring start with this video: https://www.youtube.com/watch?v=ZjOKAhMkWnQ&list=PLgXTfFM40HqF6YqVjWtEtDC-ekbIkpkyE and then continue on through the playlist, it is the instructions by cyber one on how to build spot micro. For the legs use this step by step guide on GitHub: https://github.com/michaelkubina/SpotMicroESP32

PLEASE MAKE SURE TO CALIBRATE YOUR SERVOS BEFORE YOU SECURE THE SERVOS IN. IF NOT YOU MAY HAVE TO TAKE APART THE LEGS AND ARM TO CALIBRATE THEM.

also calibrate the servos in MRL on the pi.

Print the foot tip.stl 4x

Print each leg piece 2x per side

print the I shoulder 2x one for each side

print the O shoulder 2x also one for each side

for the claw print the straight link 3 times and the bent link 2x

print everything else 1x

flip the blank right plate to the left side and put the plate with the hole in it on the right side for accessing the raspberry pi micro sd easier

(This is still a work in progress so I might add better or improved files for different parts)

(The pictures above are my V4 version and I am currently printing out the V5 so I will upload the pictures when I have don’t that in the comment section or above.)

THANK YOU TO KDY FOR STARTING THE SPOTMICRO PROJECT, CYBER ONE FOR THE WIRING CODING AND BUILD INSTRUCTIONS, TEZBOT FOR THE LEDS AND CAMERA UPGRADE, DavTech_3D FOR THE ARM UPGRADE, robjk FOR THE LEG BRACES, AND Kooba FOR THE LEG DESIGNS

PARTS I USED:

MOTERS:

11x mg996r servo motors for the upper limbs and the robotic arm base and motors.

1x sg90 servo for the claw

4x DS3225MG Servos (higher torque use for lower limbs or if you have enough money use for the entire robot except for the claw)

BOARDS and CIRCUIT pieces:

1x raspberry pi 3b+ (mother board) (newer is better but in assembly video Cyber One uses the 3 and the 4 (he upgrades it))

1x mpu 6050 (gyroscope)

1x andruino nano (distance sensor controller)

1x PCA9685 (servo motor controller)

2 X 2S 2200mAh Lipo 7.4v(Power for the robot.)

1 x Raspberry Pi Camera 8MP

2 x XL4005 5A adjustable voltage Buck Mode SMPS

1 x Dual MBR20100CT 100V - 20A Power Barrier Rectifier TO-220 (2 x Diodes) (optional, I didn’t use this but you can if you want)

2 x ultrasonic sensors, HC04

(optional 4x leds and if you do use leds then add a 330 ohm resistor to each led)

1x 2s lipo battery charger (you chose what to buy)

1 x 2x16 line LCD display I2C

1 x DPST switch

Wires, connectors, and screws:

LOTS of AWG RIBBON CABLE

5x xt60 connectors

jst connector kit

crimping tool

Heat shrink kit

Spade lugs kit (for connecting to power switch)

LOTS of M3x20 bolts

8x M4x20 bolts for screwing on the cover

8x M4 hex nuts

LOTS of hex and square M3 nuts

various sizes of M2 nuts (screwing in the pi and other stuff)

M2 hex shaped bolts

Multiple F625zz Flanged Ball Bearings (around 12+)

(if I miss any parts they will probably be in the assembly video instructions by cyber one.)

(cyber one did not add a claw to his but installing this one should be pretty strait forward just let me know if you have any questions)

You will need a higher gauge wire for the battery power but it does not need to be as thick as the normal lipo battery pack.

You will need to make your own code, my suggestion is to use My Robot Lab on raspberry pie, as it makes it easy to control all the parts and pieces. Some of cyber one’s code uploading and MRL things are outdated and there and newer versions making it easier and harder at the same time to code the dog.

BEST PRINTED IN PETG OR PLA

/You might also need to DRILL SOME HOLES FOR DIFFERENT HARDWARE AND APLICATIONS \

Have fun printing and making, and good luck! :) -3DPC

-Ps. if I miss anything just comment down below, also feel free to remix and build your own adaptations

(Robot dog in red is my v5 while the one in white is my v4)

~~ UPDATE 1, 7-19-25 ~~

- Added servo holder files for wrist servos

- Uploaded ESP32 Front for easier ultrasonic and raspberry pi camera installment that I modded to fight 4 leds and a raspberry pi camera ([to print print the file named modded spot micro front.stl v4 #2 and 3][also thank you again Kooba for creating spot micro esp32!])

- Fixing battery holder currently to be not as brittle while still fitting into the base for easy removal, will upload updated version when done

~~ UPDATE 2, 7-20-25 ~~

- Fixed the removable battery pack to improve the strength so it does not snap whenever the battery are added

- Fixed the front so that the camera can be installed without hitting the frame

~~ UPDATE 3, 7-21-25 ~~

- At this point model name is now Spotmicro esp32 V4 as I am starting to remix more of the esp32 spot micro by Kooba more and more due to them being great parts!

- fixed top plate to work with spot micro v4

- fixed back plate to work with adafruit lcd

- fixed bottom plate to work with esp32 v4

~~ UPDATE 4, 7-22-25 ~~

- Fixed backplate so it is not upside-down

- Fixed top piece and made it look better for a nicer finish

- ADDED missing leg parts that I forgot to add.

- Added missing robotic arm parts I forgot to add

- Took a bit off the battery holder wedges to fit my lipos better

~~ UPDATE 5, 7-23-25 ~~

- Fixed top shoulder so it can hold the converters

- Fixed incorrect side plates

~~ UPDATE 6, 7-24-25 ~~

- Fixed claw so that it can work with any sg90 servo

~~ UPDATE 7, 7-31-25 ~~

-CURRENTLY WORKING ON A BETTER ARM FOR THE TOP WITH MORE MOVEMENT AND BETTER CLAW STRENGTH (mini update December 7th 2025, been busy lately and am still working on the arm, so far I have the claw done but I still have to test but will post when I am done! Thanks for the patience!)

~~ Update 8, 12-25-25 ~~

Using python now to code as it proves to be more efficient than MRL

Spotmicro Robotic Dog ESP32 V5

0.2mm layer, 2 walls, 15% infill

0.2mm layer, 2 walls, 15% infill

Original