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Author Topic: How many Motors Can I Run on Uno Version 3  (Read 1004 times)
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Hi, I need to run a few things and I was just wondering if I can run the following:

2 x Wheel Chair Motors for Movement
1 x Stepper Motor
1 x Actuator (In/Out)
5 x Servos
3 x Ultrasonic Range Sensors

I only have a Arduino UNO V3, I know your going to say buy 2 more lol  smiley-grin

HELP, I am very new to this, well electronics, the programming isn't a problem lol

Graham
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I know your going to say buy 2 more
No it is only wimps that use more than one arduino per project.

I can't see you have run out of pins with that lot, remember you can use that analogue input pins as regular digital input / output if you want.
If you have run out of pins then a simple port expander like the PCF8575 or the MCP23S17 will give you another 16 I/O pins. You can add up to eight of these chips to one arduino to give 16 X 8 X 2 = 256 input / output pins if you want.
If that is not enough for you then shift registers provide input or output pins depending on the type of shift register, to an almost unlimited extent.
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Thanks for that. I have had a quick look at the PCF8575 and it seams quite easy to use. Do you have any info, schematics etc?

I also have a requirement to send speach into an amp, do you suggest a Wave Sheild for this and can you recoment a good one?
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I also have a requirement to send speach into an amp, do you suggest a Wave Sheild for this and can you recoment a good one?
Go with the one from LadyAda.
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I also have a requirement to send speach into an amp, do you suggest a Wave Sheild for this and can you recoment a good one?
Go with the one from LadyAda.

I looked on LadyAda and It seams to be made by Adafruit, is that the one?
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I looked on LadyAda and It seams to be made by Adafruit, is that the one?

LadyAda runs the Adafruit store, so yes :-)
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