LED - Parallel and Series Combination
Basic Electronics
Your first complete circuit. Power, resistor, LED — the whole story.
उड़ान is a growing community of young people learning electronics, experimenting with the environment, and teaching each other — one circuit, one question, one kit at a time.

Hands-on
learning by building
Open
free to use, free to remix
Peer-led
students teach students
Evolving
growing every workshop
What is Udaan
Udaan started small: a few students, a breadboard, and the feeling that science gets interesting only when you stop reading and start making. It has grown into a shared library of kits, videos, experiments, and conversations.
We don't run programs for students. We build them with students — so the kits get better, the questions get harder, and the people teaching next year were the people learning this one.
Four ways in
Breadboards, sensors, soldering. Real circuits you can break and fix.
Modular, reusable kits — designed to be remixed by every new cohort.
Testing water, sensing air, understanding the land around us.
Comments, builds, debates, shared notebooks — peer learning at its core.
Experiments
Basic Electronics
Your first complete circuit. Power, resistor, LED — the whole story.
Basic Electronics
Learn how a switch controls the flow of current to light up an LED.
Sound & Circuits
Build a simple buzzer circuit and explore how sound is generated with electricity.
Light & Resistance
Build a circuit that reacts to darkness. Add a buzzer, a fan, anything.
Analog Control
Smoothly control brightness — a hands-on introduction to variable resistance.
Color & Light
Mix red, green, and blue to create millions of colors. Learn how additive color works with code.
Sensors
A real working alarm using a tilt or beam sensor. Solder optional.
Environment
Detect rainfall and trigger an output. Connect it to a logger if you want.
Bioelectronics
Measures skin conductance. Use it ethically. Mostly.
Environment
Read PM2.5 or gas concentrations in your own classroom.
Water Quality
A field-friendly test for one of the most overlooked water issues.
Video Library
Basic Electronics
Troubleshooting
Environment
Water Quality
Environmental Science
We learn the science of water, air, and land by going out and measuring it. Fluoride tests, DIY purifiers, rainfall sensors, air quality probes — built by students, used in their own neighbourhoods.
Explore environmental workCommunity Experiments
Real builds. Real modifications. Real failures. The community hub is where every student becomes both a learner and a teacher.
Visit the hubI rewired the LDR dimmer to control a fan
Our rain sensor works in monsoon (mostly)
Lie detector readings on my brother — chaos
Stories from the workshop
"Before this, I thought science was something other people did. Now I keep a notebook of every circuit I break."
"We tested the village hand-pump water for fluoride. The result changed which well our family uses."
"The lie detector kit started as a joke. Then we used the same idea for a soil moisture monitor."
Growing forward
Year 1
A handful of students, a few circuits, one notebook.
Year 2
Student-led sessions across schools and villages.
Year 3
Students teaching students, on their own terms.
Next
Anyone can contribute a kit, video, or question.
Get involved
Run a workshop in your school. Upload an experiment. Answer a question. Build a kit with us. Everyone teaches, everyone learns.
