Welcome to JustLast
Engineering insights, project documentation and real-world experiments across embedded systems, CNC machining and motion control.
Embedded Systems
STM32, Arduino, ESP32 platforms. Firmware development, communication protocols (SPI, I2C, UART, CAN), PCB design, sensor integration and low-power strategies for industrial applications.
CNC & Machining
LinuxCNC conversions, G-code programming, toolpath strategies, machine calibration, post-processor development, material selection and tool wear monitoring for hobbyist and production environments.
Motion Control
Servo motors, stepper motors, linear actuators, PID control systems, VFD spindle configuration, multi-axis controllers and robotic positioning systems for automation workflows.
About Me
Virender Kumar runs JustLast alongside his engineering businesses. With 15+ years in electronics, mechatronics and motion control, he builds real systems — servo motor configurations, CNC machines, conveyor systems, embedded controllers — and documents the engineering process here.
JustLast is the knowledge arm. The commercial engineering work happens through Neway & Velton Pvt. Ltd., which builds motion control systems, linear actuators, conveyor systems, and operating theatre equipment.
Recent Focus
Current emphasis on Industrial IoT integration, PLC vs IPC comparisons, CNC calibration pipelines and embedded communication protocols (Modbus, EtherNet/IP, OPC UA, Profinet). Project documentation includes servo motor tuning, stepper driver comparisons, CNC post-processor pipelines and firmware development workflows for real hardware.