nimeshasilva
Member level 1
Hi all..
I'm doing a project, which I think I'll need some help from you guys.
I have a light sensor (TSL251R) and its output voltage is 3.3V max. I need to fix the sensor bit far from the control board (about 5m) so that I think I need some sort of analog signal conditioning to interface it to an ADC in my PIC16F887 and measure the light level.
So I hope to do it like this.the sensor board should supply with 12V (to compensate the voltage drop through the long cable, Hope to use a screen, twisted cable for the purpose to reduce the noise) and put a 78L05 and supply the sensor with 5V. And then, the sensor output voltage (0-3.3V max) should amplify to 12V and transmit back to the control board (in other words, 0-3.3V should convert to 0-12V full range). in the control board, the incoming signal (0-12V) should attenuate to the safer level (0-5V) in order to measure in the ADC.
Can anybody suggest me a better circuit to do this???? I'm a noob on the op amps and hope you'll help me.
Thank you
I'm doing a project, which I think I'll need some help from you guys.
I have a light sensor (TSL251R) and its output voltage is 3.3V max. I need to fix the sensor bit far from the control board (about 5m) so that I think I need some sort of analog signal conditioning to interface it to an ADC in my PIC16F887 and measure the light level.
So I hope to do it like this.the sensor board should supply with 12V (to compensate the voltage drop through the long cable, Hope to use a screen, twisted cable for the purpose to reduce the noise) and put a 78L05 and supply the sensor with 5V. And then, the sensor output voltage (0-3.3V max) should amplify to 12V and transmit back to the control board (in other words, 0-3.3V should convert to 0-12V full range). in the control board, the incoming signal (0-12V) should attenuate to the safer level (0-5V) in order to measure in the ADC.
Can anybody suggest me a better circuit to do this???? I'm a noob on the op amps and hope you'll help me.
Thank you