430 point light sources based tracking system microcontroller
Wei Chun-hua · Hunan Agricultural Machinery · 2010
The design of the MSP430F149 as the control center,through the amplifier LM324 comparator compares the photoresistor do feel light intensity and control the stepper motor after deceleration,adjust the laser pointer up and down about turning the light source to achieve accurate tracking purposes.LM317 voltage regulation system is a way that LED current regulation within a certain range,using the internal ADC acquisition OPA335 MSP430F149 amplified voltage signal,and calculate the current value,with 12,864 LCD display in real time.The test can accurately track the laser pointer light.