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1  Using Arduino / Project Guidance / Re: Need help choosing a chip on: April 04, 2011, 08:27:51 pm
Thank you Robert I ordered some today. I'll keep you posted on my progress!
2  Using Arduino / Microcontrollers / New Atmel ATmega128RFA1 Wireless AVR® Microcontroller on: April 04, 2011, 08:13:38 pm
http://www.atmel.com/dyn/resources/prod_documents/doc8266.pdf

The basic AVR feature set of the ATmega128RFA1 is derived from the
ATmega1281/2561. Address locations and names of the implemented modules and
registers are unchanged as long as it fits the target application of a very small and
power efficient radio system. In addition, several new features were added.
Backward compatibility of the ATmega128RFA1 to the ATmega1281/2561 is provided
in most cases. However some incompatibilities between the microcontrollers exist.
3  Using Arduino / Project Guidance / Re: Need help choosing a chip on: April 01, 2011, 01:02:59 am
Not sure if I got this all down. But I think I'm getting close. What do you think of this one?

http://www.fairchildsemi.com/ds/FQ/FQD11P06.pdf
4  Using Arduino / Project Guidance / Re: Need help choosing a chip on: March 31, 2011, 12:52:51 am
Thank you Robert you have been of great help I truly appreciate it.! I'll start digging through the parts sites and see what shakes out. Again I can't stress enough how much I appreciate your help!
5  Using Arduino / Project Guidance / Re: Need help choosing a chip on: March 31, 2011, 12:24:51 am
Ok so if I'm understanding this correctly I need a PNP to source + to my actuator NPN's to source - (ground) to my relays [they are ground triggered] for the actuators do you think some thing like this would be ok

http://www.mouser.com/ProductDetail/ON-Semiconductor/D45H8G/?qs=sGAEpiMZZMtn7beagP2hITDI%2fIpVDSPu0sBH4vKJujY%3d
6  Using Arduino / Project Guidance / Re: Need help choosing a chip on: March 30, 2011, 11:47:22 pm
The Actuators require (6), fan relay (1), Clutch Relay (1), A/C control relay (connects to the ECM to increase idle speed when the compressor is active (1), The blower motor uses a relay in (High position) (1) ahhh and the last 2 will be relays to control Low and Medium speed of the blower motor so that makes 10 actually. they will be controlled through the software activated bt the Shift registers.

I have some TIP102, TIP120, TIP35c, RFP30N06LE, and IRF520PBF I'm having trouble wrapping my brain around all the NPN, PNP, Mosfet, and Darlington info that I've been reading.

This is the car its going in

https://picasaweb.google.com/lh/photo/T7zwWhnlAgS-Key0ZOFGAO21Nf9wDfJi8bOGoef58ps?feat=directlink
7  Using Arduino / Project Guidance / Re: Need help choosing a chip on: March 30, 2011, 11:28:10 pm
The problem with using relays is limited space, mechanical failure, and I will need to use 13 relays to control everything. I will however use relays to control the blower motor, didn't test it but I'm sure it draws considerable amperage. This system will replace a control in a GM chassis. I'd really like to keep it all self contained and easy for anyone to just plug the unit in to an existing chassis

8  Using Arduino / Project Guidance / Need help choosing a chip on: March 30, 2011, 10:43:02 pm
I'm new to this been at it for about 3 - 4 weeks now and loving every minute. Currently stuck on choosing a Mosfet or ? to complete my prototype. Hate to type all this so I made a video. Hope it's exceptable!

9  Using Arduino / Project Guidance / Re: New to Arduino and wanting some input on a project on: March 30, 2011, 12:37:24 am
Quote
You could probably find rotary encoders for sale that have the click built into them, no?

I did find a clicking encoder at Spark fun much easier to implement in a custom panel really

http://www.sparkfun.com/products/9117
10  Using Arduino / Project Guidance / Re: New to Arduino and wanting some input on a project on: March 30, 2011, 12:26:22 am
The click is generated by a wiper against the inside of the wheel that resembles a gear. But I found this link that will be helpful using a mouse scroll wheel.

http://www.stevekamerman.com/tag/arduino/

Only problem I see in using the mouse wheel is mounting in a custom panel.. Unless the intent is to just use the entire mouse
11  Using Arduino / Project Guidance / Re: New to Arduino and wanting some input on a project on: March 29, 2011, 11:11:45 pm
Or a rotary encoder might be a better solution. Here is a link to an old post.

http://www.arduino.cc/cgi-bin/yabb2/YaBB.pl?num=1289942534
12  Using Arduino / Project Guidance / Re: New to Arduino and wanting some input on a project on: March 29, 2011, 10:56:07 pm
Instead of a mouse wheel you could use a potentiometer turned on it's side instead of a knob attach a wheel read the voltage change on the analog pins and select an item based on those results. Here is a simple example of the hook up.

http://www.arduino.cc/en/Tutorial/AnalogInput
13  Using Arduino / Project Guidance / Re: New to Arduino and wanting some input on a project on: March 29, 2011, 12:50:24 pm
Most automotive sensors do not output + voltage. All that I have seen work on resistance. VDO oil pressure sender 10-180 ohm 0-80psi. What sensors are you using. What type engine will you be monitoring. I've built many cars over the years and you have peaked my curiosity. Maybe you have seen a few from Exotic Illusions.
14  Using Arduino / Project Guidance / Re: Clockit problems on: March 21, 2011, 11:38:35 pm
Might want to take a look here

http://arduino.cc/playground/Main/LEDMatrix
15  Using Arduino / General Electronics / Electronics Assistant on: March 21, 2011, 08:32:11 pm
Nice App!

Electronics Assistant is a Windows program that performs electronics-related calculations. It includes a resistor colour code calculator, resistance, capacitance and power calculations and more. Details of calculations can be saved or printed. It provides all the functions found in the calculators section of this site and more in a stand-alone user friendly program.

http://www.electronics2000.co.uk/download.php#assistant

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