BUILDS · ROBOTICS · EV · IOT · KATHMANDU, NEPAL

Projects

Things I have designed and built — from an industrial safety rover with a robotic arm and a hand-welded electric go-kart, to small IoT devices with firmware I wrote myself. Tap a video to play it.

Driving demoDriving demo
Front panel and dashboardFront panel and dashboardTop view — arm and sensorsTop view — arm and sensors
Live readingsLive readings
Fire alertFire alertGas-leak alertGas-leak alertHumidity alertHumidity alert
Robotics · unmanned monitoring · team project

Industrial Safety Rover

A four-wheel robot that patrols an industrial site on its own and watches for danger when no one is there — at night, after hours, or in areas that are unsafe for people. A camera and a Raspberry Pi 5 handle the vision and the AI that drive it around; its sensors watch for fire, gas, heat and dangerous humidity. When a reading crosses a safe limit, the screen flips to a full-screen warning such as FIRE DETECTED, GAS LEAK DETECTED or EXCEED HUMIDITY. It is built to monitor a site, not to be driven by a person.

How it works. A Raspberry Pi 5 is the brain — it processes the camera feed and runs the AI that decides where the rover goes. The sensors (flame, gas, temperature, humidity and ultrasonic) watch the area, and the readings are sent to a cloud server so the site can be checked remotely. An Arduino Uno handles the motors, driving four geared wheels through two IBT-2 (BTS7960) drivers. On board there is also a servo arm with a gripper, an OLED dashboard, an addressable RGB status strip and a rotating alarm beacon, run from a buck converter and a lithium battery.

Industrial monitoringRaspberry Pi 5Computer visionAI navigationArduino UnoRobotic armSensors
The team with the finished kartThe team with the finished kart
Driving across the groundDriving across the ground
Welded chassis in buildWelded chassis in buildAssemblyAssembly850 W motor and controller kit850 W motor and controller kit
EV & fabrication · team project · Grade 9

Electric Go-Kart

A road-going electric go-kart built from a hand-welded steel frame. It carries several people across a field on one charge. Built in Grade 9 with a team.

How it works. Welded square-steel chassis; a LUKE 850 W, 48 V brushed DC motor with a matching speed controller; chain drive to the rear axle; a steering column and wheel; a battery pack on the deck.

Electric vehicleFabricationPower electronicsWelding
Clock and weather modeClock and weather modeWi-Fi learning modeWi-Fi learning modeLive Kathmandu weatherLive Kathmandu weather
IoT & custom firmware · 2026

E-Ink Desk Companion

A small e-ink device with two modes. One is a Wi-Fi learning display in the style of Pwnagotchi, used on my own network to study how Wi-Fi works. The other is a desk dashboard showing the time, date and live Kathmandu weather — temperature, humidity and conditions — fetched over Wi-Fi. It sits in a 3D-printed case I designed.

How it works. A low-cost ESP8285 Wi-Fi board with a 2.13-inch e-ink display. The board shipped locked to a fixed set of commands, so I wrote my own firmware to drive the display and both modes. Weather is pulled over Wi-Fi; the case is 3D-printed.

ESP8285IoTCustom firmwareE-ink3D printing
Phone-controlled colours and effectsPhone-controlled colours and effects
IoT · 2023

Smart Wi-Fi RGB Light

An addressable RGB LED ring controlled from the phone over Wi-Fi — a colour wheel, effects and saved presets.

How it works. An ESP8266 driving a ring of addressable RGB LEDs, controlled from a phone over the local network.

ESP8266IoTAddressable LEDs
Touchless bin at the exhibitionTouchless bin at the exhibition
Sensors · school exhibition

Smart Dustbin

A bin that opens its lid by itself when a hand comes near, so no one has to touch it. Shown at a school exhibition.

How it works. An ultrasonic distance sensor detects a hand; a servo lifts the lid and closes it again after a moment.

ArduinoUltrasonicServo
RGB underglow, colour-cyclingRGB underglow, colour-cycling
Maker build · RGB lighting

RGB Monster Truck

A four-wheel monster-truck-style car with a programmable RGB underglow. An addressable LED strip along the bottom cycles through colours and chase patterns, so the whole car glows and shifts colour. It has chunky off-road wheels, ultrasonic sensors and a 3D-printed top bracket, all run from a microcontroller.

How it works. A microcontroller drives an addressable RGB LED strip (each LED set on its own) for the colour-cycling underglow. Chunky off-road wheels, ultrasonic sensors front and back, and a 3D-printed bracket on top, powered from an on-board battery.

Addressable LEDsRGBMicrocontrollerUltrasonicMaker
Four-cell buildFour-cell build
Two-cell buildTwo-cell build
Power electronics · 2023

DIY 18650 Power Banks

Home-made power banks built from 18650 lithium cells that charge a phone — a four-cell version and a smaller two-cell one.

How it works. 18650 cells in a holder with a charge-and-boost board and a USB output; built and tested charging a phone.

Li-ionPower electronics18650
Running on an 18650 cellRunning on an 18650 cell
Maker build · 2023

Battery-Powered Fan

A small rechargeable fan built into a basket housing — a DC motor and propeller running from an 18650 cell with an on/off switch.

How it works. A DC motor and propeller powered by an 18650 cell, with a simple on/off switch.

DC motor18650Maker

Also built

Drone plant monitoring system

UAV · agri-tech

A drone that monitors plants from the air, records their health and finds problems early.

AI music generator

Generative AI · audio

An AI system that learns patterns from existing music and uses them to make new melodies.