Frozen Slimes V2

Contact: artemis8615

Check out the Discord

You can buy printed cases here. Feel free to message me if you want other cases printed.

This project uses a Wemo D1 mini, mpu6050, bmi160 or bno085s, and a TP4056 charger. On my personal slimes I wanted to use a 18650 batteries due to the longer battery life and how easy they are to get.

This is the second version of the case with a hotswappable 18650, strap slots build into the pcb and a much improved pcb design.

This will now also support mpu6050s, bmis160s, and BNO085s all on one pcb with toggles.

Tested:

• mpu6050 = yes
• bmi160 = yes
• BNO085s = yes

Build Tutorial

Offical Component Guide

Index

• Components
• PCB
• Cases
• Assembly
• Flashing Firmware
• Links
• Community Builds

Components

• TP4056
• Wemos D1 Mini
• 2in straps
• IMU docs
  • MPU6050
  • BMI160
• Switch
  • SS22F32
• Battery
  • 18650
• 1n5817 Diode
• 180k Resistor
• 18650 Battery Solderable Holder

PCB

This PCB lets every component be soldered on without any extra wires. This includes the diodes and resistor for battery sense and protected charging.

To order PCBS go to a website like https://cart.jlcpcb.com/quote upload the gerber file zip file and select quanity and color and order. It should autoselect all the other correct options when you upload the gerber file.

Cases

Read the cases documentation in Case STLs

Assembly

Steps

• Solder charge board to PCB

• Solder mpu to PCB

• Solder pins from wemo D1 to wemo, set through holes on PCB and solder the pins on the backside of the PCB

• Add 180K resitor and diodes in the same orientation as the picture

• Bridge correct pads to chose imu (for a BNO solder both bridges under its label, for BMI the one bridge under its label, for the mpu6050 no bridges)

• Solder on battery holder

• Solder on switch

• Check connections with multimeter for contunity

• Feel free to reach out to me with any questions

Flashing firmware

Make sure to install the slime vr server with drivers first.

• Use this online firmware flasher with the latest version of main and wemosd1mini.

Make sure to chose the correct imu and orientation.

BNO/MPU Instructions

• Orientation:

BMI Specific Instructions:

• Orientation:

• Calibrate bmis for first use

If the slime vr drivers arent working for you:

• Uninstall the drivers from device manager
• Extract and install this CH340 driver
• Flash the trackers

Links

Resources:

• The Docs (SlimeVR Documentation)
• Github Repository SlimeVR
• SlimeVR Discord

Community Builds

I love seeing everyone building and using my pcbs, send in your photos if you want them featured!