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.
Commercial work: Neway & Velton Pvt. Ltd. — servo motors, linear actuators, OT tables/lights, cath lab tables, mechatronics.
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.