https://builtbynikhil.com/tags/beginner/ Recent content in Beginner on Built by Nikhil Hugo -- gohugo.io en © 2026 Nikhil Joshi Sat, 11 Apr 2026 23:59:00 +0530 https://builtbynikhil.com/arduino/day-1-intro-to-arduino/ Sat, 11 Apr 2026 23:59:00 +0530 https://builtbynikhil.com/arduino/day-1-intro-to-arduino/ Day 1 of Learn Coding with Arduino — meet your Uno, install the IDE, and make the little built-in LED blink. https://builtbynikhil.com/arduino/day-2-external-led-breadboard/ Sat, 11 Apr 2026 23:58:00 +0530 https://builtbynikhil.com/arduino/day-2-external-led-breadboard/ Day 2 of Learn Coding with Arduino — wire up your own LED on a breadboard, learn why resistors matter, and blink it from the Uno. https://builtbynikhil.com/arduino/day-3-button-input/ Sat, 11 Apr 2026 23:57:00 +0530 https://builtbynikhil.com/arduino/day-3-button-input/ Day 3 of Learn Coding with Arduino — connect a push button, read it with digitalRead, and use your first if/else to turn on an LED only when pressed. https://builtbynikhil.com/arduino/day-4-variables-and-loops/ Sat, 11 Apr 2026 23:56:00 +0530 https://builtbynikhil.com/arduino/day-4-variables-and-loops/ Day 4 of Learn Coding with Arduino — meet variables (labeled boxes that hold numbers) and for loops (repeat without retyping). Blink an LED 5 times in a row with just a few lines. https://builtbynikhil.com/arduino/day-5-led-sequences/ Sat, 11 Apr 2026 23:55:00 +0530 https://builtbynikhil.com/arduino/day-5-led-sequences/ Day 5 of Learn Coding with Arduino — wire up 3 LEDs and control them as a group. Chaser patterns, random blinks, and the trick of looping over pin numbers. https://builtbynikhil.com/arduino/day-6-traffic-light/ Sat, 11 Apr 2026 23:54:00 +0530 https://builtbynikhil.com/arduino/day-6-traffic-light/ Day 6 of Learn Coding with Arduino — build a full red-yellow-green traffic light with realistic timing, then add a pedestrian button that overrides the cycle. https://builtbynikhil.com/arduino/day-7-input-pullup/ Sat, 11 Apr 2026 23:53:00 +0530 https://builtbynikhil.com/arduino/day-7-input-pullup/ Day 7 of Learn Coding with Arduino — simplify your button circuit using the Arduino’s built-in pull-up. One resistor less, and learn how to toggle an LED with each press. https://builtbynikhil.com/arduino/day-8-potentiometer/ Sat, 11 Apr 2026 23:52:00 +0530 https://builtbynikhil.com/arduino/day-8-potentiometer/ Day 8 of Learn Coding with Arduino — your first analog input. Read a potentiometer knob, print numbers to the Serial Monitor, and use PWM to dim an LED smoothly. https://builtbynikhil.com/arduino/day-9-light-sensor/ Sat, 11 Apr 2026 23:51:00 +0530 https://builtbynikhil.com/arduino/day-9-light-sensor/ Day 9 of Learn Coding with Arduino — wire up a photoresistor (LDR) to read how bright the room is, and use a threshold to decide if it’s dark enough to turn on a light. https://builtbynikhil.com/arduino/day-10-smart-night-light/ Sat, 11 Apr 2026 23:50:00 +0530 https://builtbynikhil.com/arduino/day-10-smart-night-light/ Day 10 of Learn Coding with Arduino — build a smart night light that turns on automatically when it gets dark, with a manual override button. https://builtbynikhil.com/arduino/day-11-buzzer/ Sat, 11 Apr 2026 23:49:00 +0530 https://builtbynikhil.com/arduino/day-11-buzzer/ Day 11 of Learn Coding with Arduino — connect a piezo buzzer and use tone() to play beeps, notes, and a short melody. https://builtbynikhil.com/arduino/day-12-servo-motor/ Sat, 11 Apr 2026 23:48:00 +0530 https://builtbynikhil.com/arduino/day-12-servo-motor/ Day 12 of Learn Coding with Arduino — hook up an SG90 servo motor, sweep it from 0° to 180°, and control its position with a potentiometer. https://builtbynikhil.com/arduino/day-13-dc-motor/ Sat, 11 Apr 2026 23:47:00 +0530 https://builtbynikhil.com/arduino/day-13-dc-motor/ Day 13 of Learn Coding with Arduino — drive a DC motor with a transistor and control its speed using PWM. Meet the diode and understand why Arduino can’t power motors directly. https://builtbynikhil.com/arduino/day-14-auto-fan/ Sat, 11 Apr 2026 23:46:00 +0530 https://builtbynikhil.com/arduino/day-14-auto-fan/ Day 14 of Learn Coding with Arduino — build an automatic fan that turns on when the room gets too bright or too hot, with a buzzer alert. Everything from Days 1-13 in one project. https://builtbynikhil.com/arduino/day-15-lcd-basics/ Sat, 11 Apr 2026 23:45:00 +0530 https://builtbynikhil.com/arduino/day-15-lcd-basics/ Day 15 of Learn Coding with Arduino — hook up a 16×2 LCD via I2C and display your first text. Arduino gets a screen! https://builtbynikhil.com/arduino/day-16-lcd-sensor/ Sat, 11 Apr 2026 23:44:00 +0530 https://builtbynikhil.com/arduino/day-16-lcd-sensor/ Day 16 of Learn Coding with Arduino — display live potentiometer and LDR readings on the 16x2 LCD without flicker. Arduino gets a dashboard. https://builtbynikhil.com/arduino/day-17-lcd-menu/ Sat, 11 Apr 2026 23:43:00 +0530 https://builtbynikhil.com/arduino/day-17-lcd-menu/ Day 17 of Learn Coding with Arduino — build a scrollable menu on the 16x2 LCD. Two buttons: one to cycle through options, one to select. Arduino gets a real user interface. https://builtbynikhil.com/arduino/day-18-weather-station/ Sat, 11 Apr 2026 23:42:00 +0530 https://builtbynikhil.com/arduino/day-18-weather-station/ Day 18 of Learn Coding with Arduino — build a mini weather station that shows light level, simulated temperature, and custom sun and moon icons on the LCD. https://builtbynikhil.com/arduino/day-19-ir-remote/ Sat, 11 Apr 2026 23:41:00 +0530 https://builtbynikhil.com/arduino/day-19-ir-remote/ Day 19 of Learn Coding with Arduino — hook up an IR receiver and use any TV or DVD remote to control LEDs. Your first wireless input. https://builtbynikhil.com/arduino/day-20-sound-sensor/ Sat, 11 Apr 2026 23:40:00 +0530 https://builtbynikhil.com/arduino/day-20-sound-sensor/ Day 20 of Learn Coding with Arduino — wire up a KY-038 sound sensor, detect claps, and toggle an LED with a sound. https://builtbynikhil.com/arduino/day-21-ir-and-sound/ Sat, 11 Apr 2026 23:39:00 +0530 https://builtbynikhil.com/arduino/day-21-ir-and-sound/ Day 21 of Learn Coding with Arduino — combine the IR remote and sound sensor into one sketch with manual and auto modes, with the LCD showing the current state. https://builtbynikhil.com/arduino/day-22-smart-room/ Sat, 11 Apr 2026 23:38:00 +0530 https://builtbynikhil.com/arduino/day-22-smart-room/ Day 22 of Learn Coding with Arduino — the big one. Build a Smart Room System that combines IR, sound, LCD, light sensor, LED, and buzzer into one coherent program. https://builtbynikhil.com/arduino/day-23-project-planning/ Sat, 11 Apr 2026 23:37:00 +0530 https://builtbynikhil.com/arduino/day-23-project-planning/ Day 23 of Learn Coding with Arduino — the first day of your final project. Brainstorm ideas, pick one that excites you, and sketch the system diagram before writing any code. https://builtbynikhil.com/arduino/day-24-build-core/ Sat, 11 Apr 2026 23:36:00 +0530 https://builtbynikhil.com/arduino/day-24-build-core/ Day 24 of Learn Coding with Arduino — take the project plan from Day 23 and start building. One module at a time, tested and working, before moving to the next. https://builtbynikhil.com/arduino/day-25-integration-debug/ Sat, 11 Apr 2026 23:35:00 +0530 https://builtbynikhil.com/arduino/day-25-integration-debug/ Day 25 of Learn Coding with Arduino — stitch all the modules from Day 24 into one coherent sketch, break loop() into helper functions, and debug integration issues. https://builtbynikhil.com/arduino/day-26-demo-day/ Sat, 11 Apr 2026 23:34:00 +0530 https://builtbynikhil.com/arduino/day-26-demo-day/ Day 26 of Learn Coding with Arduino — the final day. You present your project, celebrate the journey, and think about what to build next.