What is it?

The Kumquat is a versatile and cost-effective embedded system powered by the Allwinner V3s SoC, featuring an ARM Cortex-A7 processor. It offers robust connectivity options, including Ethernet, USB-C, isolated CAN-FD, and WiFi/Bluetooth via ESP32. With 8 auto-detecting 12/24V IOs, 4 relays, and extensive I/O capabilities, it’s ideal for industrial, IoT, and embedded applications. Supporting multiple programming languages like C, C++, and Python3, and running on Buildroot Linux with a Mainline Kernel, the Kumquat combines powerful features and flexible design at an affordable price, making it the perfect choice for developers seeking an alternative to traditional PLCs.

Why did you make it?

I needed an alternative to traditional PLCs that could run Embedded Linux, offered built-in bus interfaces, and was more cost-effective than other Embedded Linux controllers.

What makes it special?

Unlike traditional Programmable Logic Controllers (PLCs), which are typically designed for specific industrial automation tasks with limited flexibility, the Kumquat offers a more adaptable and powerful solution. It features a ARM Cortex-A7 processor, providing significantly more power efficiency. While traditional PLCs often rely on proprietary programming languages, the Kumquat supports multiple popular programming languages such as C, C++, and Python3, giving developers a versatile environment.

In terms of connectivity, the Kumquat surpasses most PLCs by offering extensive options, including Ethernet, USB-C, isolated CAN-FD, and WiFi/Bluetooth through the ESP32 module. Its storage capabilities are also more advanced, with 8MB SPI Flash, SDIO for eMMC or SD-Card, and I2C EEPROM. Additionally, the Kumquat boasts 8 auto-detecting 12/24V IOs and 4 relays, providing robust and flexible I/O options for various applications. Enhanced features like a Real-Time Clock (RTC) with battery backup make the Kumquat suitable for a wider range of applications beyond industrial automation, including IoT and embedded systems.