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Dan Harres (@danharres)

Dan Harres is the founder of Bitstream Technology, a company dedicated to developing health and education electronics. He is the author of the book, MSP430-Based Robot Applications, published in 2012 by Elsevier-Newnes. Prior to starting his own company, he was a Technical Fellow at Boeing Corporation, where he was responsible for the design of fiber optic networks on a number of aircraft as well as a designer of satellite electronics. He is a past chairman for the IEEE Avionics, Fiber Optics, and Photonics Conference and has written numerous technical articles.

Re: Using IR Photodiode as a sensor

Reply posted 6 years ago (01/05/2018)
So what I'm saying is that your infrared LED needs to be on all the time (just like your "test" LED was on all the time).

Re: Using IR Photodiode as a sensor

Reply posted 6 years ago (01/05/2018)
Perhaps this is it - as I understand it, you want to turn on a visible LED (on the Launchpad board) whenever your photodiode sees the output of an infrared LED (driven...

Re: Using IR Photodiode as a sensor

Reply posted 6 years ago (01/05/2018)
Did that fix it?

Re: Using IR Photodiode as a sensor

Reply posted 6 years ago (01/05/2018)
Do you have another Launchpad board you could use?  I've had port pins blown out, probably from static charge that I had when I was handling them.  If no other...

Re: Using IR Photodiode as a sensor

Reply posted 6 years ago (01/05/2018)
Isn't your MSP430 running off 3.3V?  If so, change VCC to 3.3V.  I don't think that will solve your problem but you risk destroying input and output ports by connecting...

Re: Using IR Photodiode as a sensor

Reply posted 6 years ago (01/05/2018)
Disregard my earlier comment.  I think SpiderKenny is correct.

Re: Using IR Photodiode as a sensor

Reply posted 6 years ago (01/05/2018)
I've used MSP430 uCs a lot although not the one you're using.  One question - what resistor are you using to limit the current going into the LED?

Re: Problem of Input voltage for LM4862 audio amplifier

Reply posted 6 years ago (11/21/2017)
With a 0-3V input signal, you should be able to hear an output.  The Rf resistor controls gain of this amplifier and can be increased if you want more output.The...

Re: MSP430G2553 clock speed

Reply posted 7 years ago (05/29/2017)
It sounds like you're using a calibrated DCO clock speed.  If so, the clock speed should be at the specified frequency of 8MHz.  However, this can be off by some...

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