Going to School (Smart Bamboo, Rope & Cable Stay Bridge Lab)
Source: Stemoto Original
Construct 3 traditional Indian transport bridges (Assam Bamboo Bridge, Ladakh Trolley Ropeway, Kerala Cement Bridge). Test payload weight using a load cell trolley cart while ultrasonic sensors check sag.
Categorisation
Props & Materials Required
- •Bridge construction kit (Bamboo poles, Strings/Pulleys, Cement blocks)
- •Trolley cart with HX711 load cell weight sensor
- •HC-SR04 ultrasonic sag sensor
- •ESP32 controller board
- •0.96-inch OLED display screen
- •DFPlayer Mini MP3 module + 3W speaker
Step-by-Step Instructions
Build Ladakh Trolley Ropeway
Rig a pulley trolley on a high rope string across two posts.
Load Student Figures in Trolley
Place 4 student figures in the trolley cart.
Measure Load Cell Cable Tension
Load cell reads '800 grams cable tension'. Ultrasonic sensor checks rope sag.
Trolley Pulley Advantage
Pull the pulley string — watch trolley slide smoothly across the river! Speaker plays Ladakh traditional river crossing story.
Why It Works & Notes
Going to School shows how children across India cross rivers (bamboo bridges, ropeway trolleys). Building physical bridge models and measuring trolley load capacity vs. string tension links EVS with structural engineering.
Looking Around Chapter 1: Going to School | STEM Tech: Cable Tension Load Cell Measurement & Structural Deflection Sensing — suspension bridge and aerial cableway engineering.