Bot4Less is a compact ESP32-based robot controller designed with small combat robots and beginner-friendly robot projects in mind.<\/p>\n
The board runs directly from a 2S LiPo battery<\/strong> and provides three brushed motor channels: two for the drive motors and a third for a simple brushed weapon. Each channel can handle up to 1.8 A peak<\/strong>, making the board suitable for small motors such as N20 gearmotors.<\/p>\n The integrated ESP32-WROOM-32E gives the controller plenty of flexibility. Robots can be controlled using a gamepad, the compatible custom ESP32-C3 remote over ESP-NOW, a phone over Bluetooth or console gamepads.<\/p>\n Other features include battery voltage monitoring, a servo output, support for up to four addressable RGB LEDs and a MOSFET-controlled main power switch. We recommend soldering the RGB LEDs as there’s no other indication. Or we can do that for you for an additional cost.<\/p>\n The controller was originally developed for the open-source Antweight Workshop for NTA 2026<\/strong>, a project for building a complete 3D-printed antweight combat robot. The complete hardware and software are available on GitHub, so you can also build, modify and program the controller yourself.<\/p>\n Features<\/strong><\/p>\n *Important:<\/strong> The servo power is supplied through the onboard LDO, which has limited current capability and may not be suitable for most servos. Check the hardware documentation before connecting a servo.\n
\nAlso, this board isn’t intended for serious robots as the bluetooth connection in busy areas like competitions tend to be wanky.<\/p>\nOpen-source project<\/h3>\n