In this blog post, I’ll cover all the available VESC controllers for a DIY Onewheel build. If you know about any I missed, feel free to comment below.
Fungineers Thor301-20S
Price: $301
Max Current: 300A
Max Voltage: 84V
URL: Fungineers Thor300-20S
Description:
The Fungineers Thor301-20S is a next-generation VESC-based controller designed for 20S / 84 V Li-ion battery systems. It features high-quality Infineon FETs tested to 300 A, an aluminum base PCB for excellent heat dissipation, and a compact double-PCB design. The controller includes built-in VESC Express with Bluetooth, Wi-Fi, and CAN support, dedicated LED ports, an integrated beeper, and a 3-pin footpad connector. Designed as a modern replacement for the Thor300 with improved power delivery, cooling, and expandability.
Fungineers Thor400-32S
Price: $420
Max Current: 400A
Max Voltage: 135V
URL: Fungineers Thor400-32S
Description:
The Thor400-32S is engineered for high-performance builds, offering true 32S operation with components rated up to 150V. It uses automotive-grade FETs for unmatched power delivery, along with onboard LED support, a dedicated footpad connector, and temperature probe support. The built-in VESC Express module provides Bluetooth and Wi-Fi connectivity, making it ideal for high-end e-bike, EUC, and Funwheel applications.
Little Focer V4
Price: $350
Max Current: 250A
Max Voltage: 84V
URL: Little Focer V4
Description:
Little Focer V4 offers a balance between performance and ease of use. It supports 84V (20S) battery systems and includes smart LED control that can be managed directly from a smartphone app. With an integrated 5V 2A auxiliary output and an onboard IMU for balance applications, its DRV-less design ensures reliability. The chassis/panel mount design also simplifies installation for DIY builders.
Little Focer V3.1
Price: $300
Max Current: 250A
Max Voltage: 84V
URL: Little Focer V3.1
Description:
The Little Focer V3.1 is built with a focus on performance enhancements. It integrates Bluetooth using the NRF52840 chip and utilizes a DRV-less design for improved fault detection. This model is intended for users who bring their own heat sink, supporting phase filters and advanced sensorless startup (ASS). It’s an excellent option for those looking to fine-tune their DIY builds with reliable current handling.
TRONIC 250R 24S 100.8V
Price: $372
Max Current: 300A
Max Voltage: 100V
URL: TRONIC 250R 24S 100.8V
Description:
Marketed as a “Little Focer on steroids,” the TRONIC 250R delivers high performance and versatility. It supports battery configurations from 8S to 24S and is designed to handle up to 300A peak current. This controller comes with an integrated Bluetooth module and an IMU chip, making it ideal for e-skate, Onewheel, scooter, and e-bike applications where robust performance is a must.
Cheap Focer
Price: $200
Max Current: 120A
Max Voltage: 64V
URL: Cheap Focer
Description:
For budget-conscious DIY builders, the Cheap Focer provides a cost-effective solution without sacrificing essential features. It is designed for safe 18S operation (up to 64.8V nominal) with a maximum current of 120A. With USB-C connectivity, an easy Bluetooth module add-on, and integrated smart LED control, it is a practical choice for those starting their onewheel projects.
Comparison Table
| Name | Price | Max Current | Max Voltage |
|---|---|---|---|
| Fungineers Thor300-20S | $301 | 300A | 84V |
| Fungineers Thor400-32S | $420 | 400A | 135V |
| Little Focer V4 | $350 | 250A | 84V |
| Little Focer V3.1 | $300 | 250A | 84V |
| TRONIC 250R 24S 100.8V | $372 | 300A | 100V |
| Cheap Focer | $200 | 120A | 64V |
Feel free to reach out or comment below if you have any questions or suggestions for additional controllers to include. Happy riding!