Photoresistor Course
Gain expertise in photoresistor (LDR) circuits, progressing from core principles to accurate light detection thresholds. Build and simulate voltage dividers, transistor switches, and comparators to reliably control LEDs and buzzers in practical electronics and sensing projects, using tools like Falstad and LTspice for validation.

from 4 to 360h flexible workload
valid certificate in your country
What will I learn?
This course teaches practical skills for designing and testing reliable photoresistor (LDR) circuits quickly. Learners master LDR basics, voltage dividers, transistor switching, and comparator thresholds, verifying them via Falstad, LTspice, and actual measurements. Guided examples, safety advice, and fixes enable confident creation of stable light-sensing LED and buzzer projects.
Elevify advantages
Develop skills
- Design LDR circuits to create exact light-activated switches rapidly.
- Tune voltage dividers for sharp dark-to-light transition points using practical components.
- Drive transistors by selecting proper base and load elements to safely operate LEDs and buzzers.
- Build precise window comparators with hysteresis tailored for LDR performance.
- Test and confirm LDR circuit functionality through simulations in Falstad or LTspice and hands-on lab measurements.
Suggested summary
Before starting, you can change the chapters and the workload. Choose which chapter to start with. Add or remove chapters. Increase or decrease the course workload.What our students say
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