The identifier YS-SXT-4.2 (or variants like YS-SXT-v4.2 b ) refers to a specific model of motherboard found in certain hoverboards and "self-balancing" scooters, such as the Hover-1 Chrome Key Specifications Processor: These boards typically use the ARM MM32SPIN06 microcontroller [20]. Architecture: It is often classified as a Gen2 (Generation 2)
hoverboard motherboard, which typically features a "split-board" design rather than a single large central board [20]. Hackability:
This board is frequently discussed in community forums (like ) by hobbyists attempting to "hack" or reflash the
[20, 28]. This is done to repurpose the powerful hoverboard motors for other DIY projects like e-bikes, go-karts, or robotics [15, 28]. Common Use Cases
Used as a reference for identifying replacement parts or diagnosing power issues (e.g., blown capacitors Firmware Modding: Developers use these identifiers to determine which firmware hack
is compatible with their hardware, as different boards require different pin configurations [20, 28]. technical pinouts to flash new firmware, or are you trying to troubleshoot a specific error with the board?
The YS-SXT-V4.2 B is a specific revision of an electronic circuit board, most commonly identified as a hoverboard motherboard or control system module. These boards act as the "brain" of the device, managing self-balancing sensors, motor output, and battery distribution.
Below is a detailed guide covering the specifications, common uses, and troubleshooting for this specific hardware revision. Understanding the YS-SXT-V4.2 B Architecture
The "V4.2 B" designation refers to the hardware version. In the world of mass-produced consumer electronics like hoverboards and electric scooters, manufacturers frequently update board layouts to improve thermal management or sensor accuracy.
Microcontroller Integration: Usually features a 32-bit ARM-based processor to handle real-time gyroscope data. ys-sxt-v4.2 b
Sensor Layout: Includes ports for dual gyroscopic sensor boards (the small boards located under the footpads).
Power Handling: Designed to interface with standard 36V Li-ion battery packs, regulating power to dual 250W or 350W brushless DC (BLDC) motors. Key Specifications
While exact specs can vary by the specific factory of origin, the YS-SXT-V4.2 B typically follows these standards: Operating Voltage: 36V (Nominal). Peak Current: 15A – 20A per motor channel.
Communication: Internal serial communication between the master board and slave sensor boards.
Safety Features: Low-voltage cutoff, tilt-angle protection, and over-current sensing. Common Troubleshooting & Repairs
If you are working with a device using this board and encounter issues, here are the most frequent scenarios for this hardware version:
Red Light Blinking (Calibration Required):If the hoverboard is beeping with a flashing red light, it often indicates the sensors are out of sync. With the device on a level surface, hold the power button for 10 seconds until the lights flash rapidly, then restart.
One Side Not Working:This version of the board uses dedicated MOSFETs for each motor. If one side fails to spin, check the connection cables or inspect the board for "blown" MOSFETs (which often look burnt or discoloured).
Replacement Compatibility:When replacing a YS-SXT-V4.2 B, it is crucial to match the version exactly. Using a V3.0 or V5.0 board with V4.2 peripherals can lead to communication errors (the "5 beeps" error code), as the pinouts for the LED and sensor cables often change between versions. Sourcing and Availability The identifier YS-SXT-4
You can typically find these boards through specialty electronic repair sites or major marketplaces:
StreetSaw Hoverboard Parts is a reliable source for identifying specific board versions and finding compatible replacement kits.
Monster Scooter Parts offers a variety of control modules and wiring harnesses for self-balancing scooters.
Internal/Beta software version
v4.2 suggests a version number.b could mean “beta” or “build.”ys-sxt might be a project or company internal code (e.g., “YuanShen-SomeXTool” or “YunSystem-SXT module”).Firmware or embedded system version
v4.2 b could be a minor release after v4.2 a.Proprietary data format or library
ys-sxt as a magic number or file signature.Misremembered or partial string
ys-sxt-v4.2-b where b is a branch or patch level).If you found this string in a specific context (error log, filename, device label, app info), please share that context — then I can give a precise explanation of what it refers to.
Otherwise, without additional clues, it’s likely an internal version tag not publicly documented. Internal/Beta software version
YS-SXT-V4.2 B refers to a specific hardware component, specifically the "slave" or secondary circuit board found in certain hoverboards Hover-1 Chrome
). These boards are typically used in a split-motherboard configuration where "A" is the main board and "B" is the secondary.
If you are looking to work with this board, here is a summary of technical details and common tasks associated with it: Hardware Overview
: It serves as the slave controller, typically managing the motor and sensors on one side of the hoverboard. : Often features an ARM-based microcontroller, such as the MM32SPIN06 Connectivity
: It connects to the main "A" board via a data cable to synchronize movement and balance. Common Maintenance & DIY Tasks : If your hoverboard is tilting or showing error lights, a recalibration/reset is the first step. Replacement
: If the board is fried (often indicated by a "red light" error), you may need to replace the motherboard and gyroscopes Firmware Hacking : Some hobbyists attempt to reprogram these boards
for custom projects like motorized carts or robots using tools like ST-LINK.
Are you attempting to repair a hoverboard with this board, or are you looking for programming/hacking specifications?
Resetting Hoverboard battery with paper clip, No voltmeter needed! 26 Feb 2024 —
ys_sxt.abs is required).