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Amit Bernstein (@amitbe)


Re: Using IR Photodiode as a sensor

Reply posted 6 years ago (01/08/2018)
Problem solved. I didn't connect the grounds of the circuit and the MSP boardNewbie mistake

Re: Using IR Photodiode as a sensor

Reply posted 6 years ago (01/06/2018)
How can I measure the pin's voltage? 

Re: Using IR Photodiode as a sensor

Reply posted 6 years ago (01/06/2018)
Not sure I understood what you meant here - "I'd verify that the pin is actually getting pulled to the correct voltages" Can you explain? Did you mean measure...

Re: Using IR Photodiode as a sensor

Reply posted 6 years ago (01/06/2018)
1) True2) True, why is that a problem?3) it's a photodiode, not a special reciever. When it gets IR light it will conduct, but it needs to be reversed biased in...

Re: Using IR Photodiode as a sensor

Reply posted 6 years ago (01/06/2018)
It is blinking, and like I said I also checked the sensor and it's working

Re: Using IR Photodiode as a sensor

Reply posted 6 years ago (01/05/2018)
I think I explained myself the wrong way. True, I'm trying to turn on a visible LED on the launchpad, using a "switch" made with an infrared photodiode. But, the...

Re: Using IR Photodiode as a sensor

Reply posted 6 years ago (01/05/2018)
sorry, it didn't

Re: Using IR Photodiode as a sensor

Reply posted 6 years ago (01/05/2018)
already tried different pins and different launchpadsThank you for your help! 

Re: Using IR Photodiode as a sensor

Reply posted 6 years ago (01/05/2018)
Thought about it.1. That's what our lab guide told us to do, I know it's strange but still2. I changed it to 3.3V and like you said it didn't help 

Re: Using IR Photodiode as a sensor

Reply posted 6 years ago (01/05/2018)
560[Ohms]Like I wrote in the original post, I tested the circuit just to make toggle a LED and it is working. I also measured current and voltage using a DMM and...

Re: Using IR Photodiode as a sensor

Reply posted 6 years ago (01/05/2018)
Embarrassing mistake. I copied the wrong code. Anyway, even when P5DIR = 0x00 it didn't work

Using IR Photodiode as a sensor

New thread started 6 years ago
Hi I am a student working on a project with MSP-EXP430F5438 LaunchPad and I'm trying to use IR photodiode to open a gate in a model of a parking lot. In order to...

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