Abstract: Light dependant resistors (LDR) are widely used in robotic world to detect or avoid obstacles or to measure light level in home automation system. Such commercial sensors have a non linear response curve. This paper presents a simple and clever analogue COTS circuit to obtain a linear response. Theoretical design is explained; simulation and measurement results are commented. An example of application is given for a small scale solar tracking system with two LDR sensors.
DOI: *As the DOI is a unique identifier, it is already available in the pdf version. **The DOI link will be activated in the first midst of January 2026.
Philippe Dondon, M. Rezzouki, A. Goncalves, "LDR Analogue Linearization Circuit for a Bubble Light Tracking," WSEAS Transactions on Electronics, vol. 10, pp. 114-121, 2019, DOI:
Philippe Dondon, M. Rezzouki, A. Goncalves. LDR Analogue Linearization Circuit for a Bubble Light Tracking.
WSEAS Transactions on Electronics. 2019;10:114-121.