Difference between revisions of "Electric Bobby Car Hoverboard Upgrade"
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[[Image:bobby_car_hoverboard_upgrade_overview.png|600px]] | [[Image:bobby_car_hoverboard_upgrade_overview.png|600px]] | ||
== Schematics == | == Schematics == | ||
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[[Image:hoverboard_pinouts_STM32F103.png|400px]] | [[Image:hoverboard_pinouts_STM32F103.png|400px]] | ||
== Inspiration == | |||
* [https://larsm.org/allrad-e-bobby-car/ Larsm Allrad e-Bobby Car] - great write up and custom firmware fork | |||
* [https://github.com/NiklasFauth/hoverboard-firmware-hack Niklas Fauth Hoverboard firmware hack] - original firmware | |||
* [https://figch.de/index.php?nav=bobbycar Fisch's detailed build guide] - great documentation of the assembly | |||
Revision as of 17:05, 27 February 2019
This project puts four 350W hoverboard motors in a Big Bobby Car toy vehicle, to give it independent four wheel drive and a top speed of 29km/h with turbo activated. All controlled by two potentiometer triggers on the steering wheel.
Specifications
- Project start: January 2019
- Main controller: STM32F103 72MHz ARM Cortex-M3 core
- Flasher: ST-Link V2 Programming Unit clone
- Motors: 4x direct drive 3-phase brushless DC electric wheel hub motors with hall effect sensors, 350W ea
- Tire type: non-pneumatic rubber tire, road pattern
- Tire size: 7-inch / 170 mm
- Battery: Lithium-ion rechargeable 18650-cells, 10S2P 36V 4400mAh 158.4Wh pack with XT60 connector
- Upgrade: Controller can handle 13S (48V), 12S battery upgrade easiest
- Charger: Lithium-ion charger 42V 2A 3-pin connector with built-in fan
- Upgrade: External charger for anything else
- Internal connectors: JST Sales America B4B-XH-A(LF)(SN) 2.5mm pitch
- Vehicle base type: BIG New Bobby Car Red
- Dimensions assembled: L57 x W30 x H39 cm
- Original load-bearing: 50 kg max.
Overview
Schematics
- File:Hoverboard schematic full reverse.pdf - Full reverse engineered schematic of the classic hoverboard circuit board
- File:Hoverboard schematic simple reverse.pdf - Simple schematic the circuit board
Pin-out
Pin-out of the hoverboard connections, by NiklasFauth:
STM32F103 MCU pin-out:
Inspiration
- Larsm Allrad e-Bobby Car - great write up and custom firmware fork
- Niklas Fauth Hoverboard firmware hack - original firmware
- Fisch's detailed build guide - great documentation of the assembly
