Voice Control · Intermediate
Voice controlled robot with Arduino: offline commands
A ₹2,100 voice-controlled car with a serial protocol, a watchdog stop and a command map that works with a phone or an…
Build-first robotics · India
Robotics projects you can build, test, and defend.
Every guide carries a rupee-costed bill of materials, code with a matching pin map, and the checks that catch the mistakes before your demo does.
₹-priced BOMs
Pin maps that match the code
Last-reviewed dates
Parts you can buy in India
Build sheetLine follower
Parts total₹1,240
Bench time3–4 h
₹ first Every BOM costed in rupees
Pin maps Wiring that agrees with the code
Checklists What to test before the demo
India Parts you can actually order
Five ways in
One standard, five ways to use it.
Build something, learn the theory behind it, or price the part before you order. Every section uses the same rule: if a number or a pin is on the page, it is checkable.
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Projects
Build plans with a rupee BOM, wiring, code and the checks to run before power-on.
Browse builds →
06
Not sure where to start?
Follow a four-week path from zero to a working line follower — no prior electronics.
Find your build
Match the project to your bench, budget and deadline.
Filter by the board already in your drawer, the money you can spend, or the skill you want to come out with. Counts update as the library grows.
By board
By budget
By skill
The library
Start with a build that fits your bench.
Each project page opens with the parts total, the bench time and the skill level — before the steps. If it does not fit your budget, you know in ten seconds.
Maze Solver · Intermediate
Maze solver robot with Arduino: build sheet and flood-fill code
A ₹2,300 maze solver with three IR wall sensors, two encoders and a flood-fill sketch, plus sensor calibration and a paper-maze test…
Sumo · Intermediate
Sumo robot with Arduino: build, sensors and strategy
A ₹2,900 sumo robot with three edge sensors, a TB6612FNG and four TT motors, plus the traction and rulebook checks that decide…
IoT and control · Intermediate
ESP32-CAM robot car: live video from a phone browser
A ₹2,600 ESP32-CAM car with a two-port MJPEG stream, a 5 V rail that survives camera peaks, and the pins the camera…
Robot arm · Intermediate
Arduino robot arm: 3-DOF build with servo torque maths
A ₹3,290 three-axis arm: torque worked out before buying servos, a separate 6 V supply, and a test sequence that protects the…
IoT and control · Intermediate
ESP32 Wi-Fi robot car: build sheet and browser control
Control a robot car from a phone browser over Wi-Fi. A ₹1,520 build with the ESP32 pin map, motor safety and the…
The standard
A guide is only useful if the build survives the week after submission.
No render-only projects. Every build sheet is written to be checked on a bench, with the numbers visible and the likely failures named.
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Parts you can price
Each BOM lists quantity, an India price checked against live listings, and a substitute that fits the same footprint.
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A pin map that matches the code
The diagram, the sketch and the table use the same pin names. If you move a jumper, you know exactly what to change.
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A test plan, not a victory lap
Power-on checks, calibration steps and the three failure modes that waste a day — written before the demo, not after it.
Learning paths
A route, not a feed of random tutorials.
Three routes, each ordered so that every new idea lands on something you have already built. Start where you are.
Path 01 · 4 weeks
Start from zero
No prior electronics. End with a robot that follows a line and a habit of testing one thing at a time.
Path 02 · 6 weeks
Final-year project
Choose a scope you can finish, cost it honestly, and write a report that survives the viva.
Path 03 · 8 weeks
ROS 2 and autonomy
For builders who can already make a robot move and want nodes, topics and a rover that navigates.
Parts, explained
Know the part before you solder it.
What it does, where it fails, what it costs in India, and the closest substitute that fits the same pins. Written for the part in your hand, not the datasheet headline.
Boards₹250–₹500Arduino Nano: the Uno in a robot-sized packageSame ATmega328P as an Uno, 45 x 18 mm, with two extra analog pins and a much weaker…Read the guide →
Motor drivers₹180–₹350PCA9685 servo driver: 16 channels over two I2C wiresSixteen hardware-timed servo outputs, 12-bit resolution and a separate servo rail. The pulse arithmetic, the power wiring and…Read the guide →
Motor drivers₹120–₹250A4988 stepper driver: current limit, microstepping and wiringTwo GPIO pins, sixteen microsteps and a trimpot that decides whether the board survives. How to set Vref…Read the guide →
Boards₹350–₹700ESP32-CAM: a Wi-Fi camera board with almost no spare pinsA 2 MP camera, Wi-Fi and a microSD slot for under ₹700 — and only one reliable GPIO…Read the guide →
Boards₹500–₹850Raspberry Pi Pico W for robotics: pins, power and limitsPico W pin map, VSYS and 3.3 V limits, Wi-Fi range and why it needs a motor driver…Read the guide →
Power₹70–₹160LM2596 buck converter: setting the voltage safelySet the LM2596 output before you connect a board, understand the real 3 A limit, and stop switching…Read the guide →Calculate first
Stop guessing. Size the part before you buy it.
Three calculators that answer the questions that actually stop a build: will the servo lift it, will the battery last the demo, and what is the true cost of the parts list.
The Build Note
One short email when something is worth your bench time.
A new build sheet, a part price that moved, or a mistake worth avoiding. No daily drip, no recycled news.
One short email when a build or a price is worth your time. Unsubscribe in one click.
Straight answers
What you should know before you start.
Are these builds tested?
Every guide is checked against component datasheets and known-good reference designs, and the code is compiled before publishing. A build marked Bench-tested has been assembled and measured on a real bench; that badge appears only when it is true. Each page shows the date it was last reviewed.
What do the costs include?
Parts only, in Indian rupees, at a reliable listing we found when the page was last reviewed. Shipping, tools and consumables such as solder, wire and tape are called out separately where they change the total.
Can I submit one of these as my final-year project?
Yes, but check your university's rules first. The final-year route covers scope, report structure, costing and viva questions. It cannot guarantee approval, originality or marks.
Do you sell kits?
No. We publish the parts list and link to stores we would order from ourselves. Some links are affiliate links, which may earn us a commission at no extra cost to you.
I have never built a circuit. Where do I start?
Start with the four-week beginner route: pick a board, build a line follower, then add obstacle detection. You need no prior electronics, but you do need a multimeter, a breadboard and patience.
Free: the final-year project pack
A shortlist with BOMs, a report outline that matches the usual chapter scheme, a costing sheet and 40 viva questions. Built for the February–April submission season.