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1  Using Arduino / Programming Questions / Re: pulseIn accuracy on Arduino Micro on: May 09, 2014, 07:16:23 pm
You can get better 100ns accuracy (I think down to 60ns but I haven't looked at the code in awhile so I don't know off the top of my head) with a PONTECH UAV100:

http://pontech.com/details/138

https://github.com/pontech/uav100

Its a chipKIT based RC servo controller that also will read 8 inputs from a RC receiver.  It uses some PIC32 specific code so its not 100% compatible with Arduino but if you know the Arduino tools you will not have much trouble switching to chipKIT.

Jacob
2  Using Arduino / Programming Questions / Re: thermocouple problem with arduino on: February 09, 2014, 02:45:25 pm
Do you have a thermocouple hooked up (and are sure its not open)?

Do you have the polarity correct on the thermocouple?

Do you have a scope, can you tell is SPI communications is working?

Jacob
3  General Category / General Discussion / Re: Arduino for industrial automation on: December 22, 2013, 12:56:46 am
We are building an industrial form factor open system based on 80MHz PIC32 chipKIT (Uses same wiring libraries as Arduino).  More info quick240.com.

Jacob
4  Using Arduino / Programming Questions / Re: JSON Library? on: September 16, 2013, 05:32:34 pm
There is a json lib here that my colleage wrote for chipKIT (Microchip PIC32 Arduino Compatible boards).  It may work with Arduino.  At its core it makes calls to Arduino libs used in chipKIT.  I believe it does make use of malloc, which from my understanding does not work so great on Arduino.  Its maintained and used heavily but not documented.

https://github.com/pontech/pic32lib

Jacob
5  Community / Exhibition / Gallery / Re: Arduino as a Pic Programmer! on: May 03, 2013, 11:01:26 am
Have you tried this code on a chipKIT board?

Jacob
6  Development / Other Hardware Development / Re: Chipkit Max32 DSPI and Serial fix? on: January 14, 2013, 12:39:31 pm
The Chipkit forum is broken (I can't get the confirmation email for registration) and I haven't had any luck emailing digilent directly so here I am.

poodull,

Is this still an issue for you?  I'm trying to get it resolved.

Jacob
7  Products / Arduino Due / Re: 3.3V inputs & outputs on: October 25, 2012, 06:39:42 pm
Actually, the chipKIT Uno32 and Max32 boards based on the PIC32 that are Ardunio compatible seem more compatible to Arduino than DUE.  Most pins on the chipKIT boards have 5V tolerant inputs where the DUE does not.  This means that most Arduino shield will work with chipKIT but not DUE.  I imagine that many people will end up frustrated with a DUE purchase to find out there existing sheilds don't work (and may even damage there SAM3A chips).

Jacob
8  Using Arduino / Project Guidance / Re: Using git to manage Arduino projects on: December 05, 2011, 11:45:53 pm
So my issue is that I am going to have many projects and many libraries and maybe 3-5 users.  The libraries will be changing over time so I want to track them as sub modules, but git cannot track a project outside of the folder where it located.

Actually I figured out how to do it...  If I have a library in the libraries folder it is included using the <>, if I put it in the project I can just include it using the local path using "".  My libraries can just be duplicated in each project with the specific version needed for that specific project.

Jacob
9  Using Arduino / Project Guidance / Re: old style jutboxes that flashed lights to the beat of the music on: December 05, 2011, 08:10:24 am
They way a light organ usually works is by using analog low, ban and high pass filters to isolate signal frequencies to trigger specific lights.  Unless you used such filters on your audio signal prior to entering the ADC on the uC you will need to do this audio separation in software.  The software technique to do this is call a discrete fourier transform (DFT) or its faster cousin the fast fourier transform (FFT). 

It looks like someone has already done something like what you thinking about here:



Jacob
10  Using Arduino / Project Guidance / Re: Servo and 10K Pot on: December 05, 2011, 07:57:32 am
Add a cap from your pot wiper to ground, maybe 10uF.  Also, make sure your ADC reference has good capacitance on it.

Jacob
11  Using Arduino / Project Guidance / Re: Making my own solenoid on: December 05, 2011, 07:53:13 am
Maybe use less water and make your exit point smaller.  The surface tension of the water may keep it from going through a smaller hole without help.
12  Using Arduino / Project Guidance / Using git to manage Arduino projects on: December 05, 2011, 07:44:56 am
I'm wondering if anyone has any suggestions for managing Arduino projects that use libraries using the git version control system.  Since the library directory exists in the same directory as individual projects it seems impossible to make a library that is used by your project a submodule.

Jacob
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