Lab Time

I spend a lot of time working away on projects in my laboratory. I am a Neuroscientist and I am currently studying olfaction. I make devices, do experiments, and try to figure out how the brain works. This is a chronicle of all things lab related.

Thursday, September 6, 2012

Fixing Bronkhorst MFC

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One of our Bronkhorst MFCs burned out from a user error: a short circuit on the input voltage. We were building an interface for talking t...

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Sunday, June 17, 2012

Fake Neuron in Arduino

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I am getting ready to go ahead with electrophysiology experiments recording from the olfactory bulb. To test my acquisition equipment and ...

Saturday, May 26, 2012

8Kb is not a lot

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...but it just has to do. The Arduino with the Atmega chip has only 8Kb bytes of RAM. In writing my Arduino-MATLAB interface I came up h...

Thursday, May 24, 2012

Beware Logic Levels

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I had a very annoying time tracking down a problem with my poke detector circuit. For some reason, it recently started acting up. Now, th...

Wednesday, May 23, 2012

Circuit Simulation

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My electronics projects have gotten complicated enough to give me a headache. To surrender to this complexity I started using a circuit si...

Saturday, May 12, 2012

Arduino PWM Filter

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To get nice analog signals from the Arduino PWM pins it is necessary to filter the output. Arduino PWM is somewhat slow, frequency of 15.6...

Open-Source Arduino-Based Olfactometer Shields

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We just put together a set of shields to allow Arduino-based olfactometer control. I am including the linked schematics here. To make the...

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