MMA2260 Accelerometer Project

Written by: Alan Parekh at 11:30 am. Filed under Electronic Hacks

Ben Jackson has built a nice simple PIC microcontroller based project that interfaces to a MA2260 Accelerometer. Ben provides the source code so you can see his interface technique. It is interesting to read that there was a number of errors on the datasheet for the device, in my opinion the errors that he found are totally unacceptable!

“This little board demonstrates the capabilities of the MMA2260 +/- 1.5g X-Axis Micromachined Accelerometer. As you tip it back and forth, LEDs light up to show the magnitude and direction of the G force.

The microcontroller is a PIC16F628, which is entirely unsuited to this application, having no ADC. I failed to notice that, being quick to note “AN0″ on PORTA and slow to note that it was for a comparator, not an ADC. However, there is a builtin programmable voltage reference which was sufficiently accurate for lighting up 8 LEDs.”

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5 Responses to “MMA2260 Accelerometer Project”

Berni Says:
August 16th, 2007
Just a few days back i got some acselerometers from freescale too( 3 axis ones woho). But i made something more interesting from it a PC mouse that works in mid air.

Im planing to also make it wireless too.

I also got some dsPICs a few houres ago in mail… i wodner if they could do somethign even cooler whith a acseleromeer.
Alan Parekh Says:
August 16th, 2007
Sounds like a great project Berni. Any pics or videos?
Berni Says:
August 17th, 2007
Nope not yet. Im gona do some more work on it today and it will probobly end up as a article on uC hoby.

First il try to get thease crapy RF modules to work good.Then i can get some videos done.
MMA2260 Accelerometer Project | EE Says:
August 19th, 2007
[...] The microcontroller is a PIC16F628, which is entirely unsuited to this application, having no ADC. I failed to notice that, being quick to note “AN0″ on PORTA and slow to note that it was for a comparator, not an ADC. However, there is a builtin programmable voltage reference which was sufficiently accurate for lighting up 8 LEDs.” From: http://hackedgadgets.com/2007/08/16/mma2260-accelerometer-project/ [...]
mma Says:
July 20th, 2008
I find this blog very interesting, i will be here everyday till now. Greetings