DIY Hismith + Lovense Edge Dildo Project designed for ESP32

My goal of this Project is to make a Custom Hismith Compatible Smart Vibrating Dildo

==============WHAT’S DONE==============

A Not Final Prototype Circuit

DFrobot Beetle ESP32 - C3

DFrobot HR8833 Thumbnail Sized DC Motor Driver 2x1.5A

SparkFun LiPo Fuel Gauge

TP4056 lipo charger

Pololu Adjustable Step-Up/Step-Down Voltage Regulator S7V8

Most of the Code

All Vibrators Working, With Very Little Delay
BLE functioning & Connects To the Xtoys.app
MAX17043 code now Working

==============WHAT’S IN PROGRESS==============

Circuit

Power Switch
Power Connector

The Code

Button Pressed Presets/ Patterns

==============TO DO==============

Dildo Mould

Electronics Housing Design to be 3d Printed

===========Currently Missing Code Features==============

an input from the Soft Power Switch circuit to play preset Patterns on each press or any Preset commands

====NOT FINALISED Recommended Circuit Parts========

This is to make a compact Insertable device that is as close to an Edge 2 as possible without making a custom PCB

1x Soft Power Switch by sparkfun https://www.sparkfun.com/products/17870

1x DFrobot Beetle ESP32 - C3 https://www.dfrobot.com/product-2566.html

My Code Has been Optimised to work with this Low Frequency but also cheap & Tiny ESP32, 
It's the Smallest & Cheapest I've found

1x DFrobot HR8833 Thumbnail Sized DC Motor Driver 2x1.5A https://www.dfrobot.com/product-1492.html

1x SparkFun LiPo Fuel Gauge

(you can get this particular one on eBay cheaper & in bulk)

1x A lipo battery at least 500mAh

(A good Source for Small Batteries is a Li-ion rechargeable 9v you should be able to get these on eBay,  
you get a bonus dc-dc 9v Step-up  Circuit/ 9v Boost Converter

Notice these batteries often come without protection Circuits, 
and the 9v boost converter can't be turned off without disconnecting the battery, 
so it will constantly drain it) 

A lipo charger, A common & cheap one is the TP4056, and it has a protection circuit.

Notice these come from the factory setup for charging 1000mah lipo if using a smaller battery use 
https://www.best-microcontroller-projects.com/tp4056.html#TP4056_Current_Programming_Resistor as a guide

A Adjustable boost Converter - Pololu Adjustable Step-Up/Step-Down Voltage Regulator S7V8A

This is to Ensure that the motors run correctly at a low PWM signal (or lovense Vibrate:1; 10% Power),
this voltage is dependent on your motors

A 5v step-up Regulator to power the DFrobot Beetle ESP32 - C3 via the VIN + GND pins.

Using the BAT + GND pins is possible but its not stable when the motors draw a high Current 

2 DC ERM vibration motors

Easiest sources for these is cheap Vibrating egg Sex toys