Showing posts with label arduino. Show all posts
Showing posts with label arduino. Show all posts
Thursday, January 2, 2014

Getting and sending analog data over bluetooth with Arduino Pro at 8 MHz

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I am thinking of using the ATmega328 running at 8MHz for the microcontroller on my wireless module.  To gather neural data, I am contemplat...
Monday, December 23, 2013

Good data rate from Arduino over Bluetooth Serial

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I am designing a better wireless data transmitter.  To do this, I have decided to switch from XBee to a bluetooth module.  I purchased the ...
Sunday, February 24, 2013

Arduino I2C DAC Array Using MCP4725

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The XBee in line passing mode would output signals via PWM.  However, this method is not very good because of the low PWM frequency of the ...

Wireless Movement & Sniffing Monitor

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Using an XBee, Arduino, and some sensors (accelerometer, pressure sensor), we put together this wireless movement/sniffing monitor.  The de...
Monday, January 21, 2013

Sending wireless signals with XBee & Arduino

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We recently needed to make a system by which we can send sensor data from a freely moving animal wirelessly.  One simple way to do this is ...
2 comments:
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...
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...
1 comment:
Monday, March 19, 2012

MFC Control Complete

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Today I finished implementing control over my mass flow controllers from Alicat.  I now have the capacity to drive two MFCs via analog volt...
7 comments:
Saturday, March 17, 2012

Arduino Timer Configuration for 10bit Analog Output

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Two things matter for PWM analog output: 1. PWM Frequency 2. PWM Resolution The Atmega1280 comes with a couple of timers that control ...
Friday, March 16, 2012

Arduino as Analog Function Generator

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I realized that outputting functions over the serial port is a little too much overhead.  However, my MFCs can be controlled by analog sign...
Thursday, March 15, 2012

Speedy MFC!

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So it turns out there was a setting on the device that adjusts the speed with which the MFC operates.  Here I demo both the nice speed of ...

My Awesome Test Setup

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Here's a picture of my setup.  On top of the Arduino is our custom valve driver shield.  Attached to the shield DB9 port is my hastil...
Wednesday, March 14, 2012

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Just resolved sending also and I got my first serial port comm between Arduino and the MFC.  In the end, I simply inverted both the transmi...

In the light of the morning

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In the light of the morning, answers come: http://www.sparkfun.com/tutorials/215 It looks like the MFC is using an RS232 standard but th...
Tuesday, March 13, 2012

RS 232 Voltages

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I managed to get some serial input from the MFC to the Arduino, however, the input was garbled!  One cause of this could be that the RS 232...