328P I/O Board

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iSteve
Posts: 21
Joined: Tue Dec 04, 2012 4:08 am

328P I/O Board

Post by iSteve » Thu Oct 17, 2013 3:49 am

A recent project required a Freetronics 328P and several I/O's for a 12v Application

The board contains
2 PWM Outputs with T-220 P Channel Mosfets
2 Resistor Dividers for input
1 Resistor Divider with 2 inputs Suitable for 2 Buttons etc
1 Transistor output
5V Regulator 100ma
breakout connectors for LCD etc

added pic with Components
Attachments
Tac.jpg
328P
328P.png
328P
Last edited by iSteve on Tue Oct 22, 2013 3:04 am, edited 1 time in total.

angusgr
Freetronics Staff
Freetronics Staff
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Joined: Tue Apr 09, 2013 11:19 pm
Location: Melbourne, Australia
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Re: 328P I/O Board

Post by angusgr » Thu Oct 17, 2013 4:11 am

Nice board Steve! Are you at liberty to tell us about the application?

iSteve
Posts: 21
Joined: Tue Dec 04, 2012 4:08 am

Re: 328P I/O Board

Post by iSteve » Thu Oct 17, 2013 10:32 am

The Board is used in an automotive application.

When it detects a turn on voltage on one of the Volatge dividers it executes a sequence,then can be controlled with the 2 OEM Switches which alter the timing length. and activate one or both the Mosfets in the sequence required giving a PWM Positive Output
The transistor T92 on the LHS is used a power indicator.

The Board is quite versatile and can be used for many other applications

theres some extra Digital pins up top to wire up a LCD etc

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