Talk:Wishlist/Sensorbox

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(Users:hns)
(Users:hns)
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This is what has been thought of: a simple processor that still suppports A/D converters and USB. A good candidate appears to be http://ww1.microchip.com/downloads/en/DeviceDoc/41124c.pdf Cost is approx. 5 USD.
 
This is what has been thought of: a simple processor that still suppports A/D converters and USB. A good candidate appears to be http://ww1.microchip.com/downloads/en/DeviceDoc/41124c.pdf Cost is approx. 5 USD.
  
Using an ARM processor just to convert some samples per second into USB appears to be overkill to me. But it is just one of the options to considered. A drawback appears that the ADC resolution is just 8 bit. This is quite coarse for some sensors. 12 bit wouldbe better.
+
Using an ARM processor just to convert some samples per second into USB appears to be overkill to me. But the PIC is just one of the options to considered. A drawback appears that the ADC resolution is just 8 bit. This is quite coarse for some sensors. 12 bit wouldbe better.
 +
 
 +
So what we need:
 +
* single chip
 +
* supports USB and approx. 8 ADC channels without many external components
 +
* low power
 +
* readily available development tools

Revision as of 15:01, 2 November 2008

Processor discussion

A

Users:hns

This is what has been thought of: a simple processor that still suppports A/D converters and USB. A good candidate appears to be http://ww1.microchip.com/downloads/en/DeviceDoc/41124c.pdf Cost is approx. 5 USD.

Using an ARM processor just to convert some samples per second into USB appears to be overkill to me. But the PIC is just one of the options to considered. A drawback appears that the ADC resolution is just 8 bit. This is quite coarse for some sensors. 12 bit wouldbe better.

So what we need:

  • single chip
  • supports USB and approx. 8 ADC channels without many external components
  • low power
  • readily available development tools
Personal tools

Processor discussion

A

Users:hns

This is what has been thought of: a simple processor that still suppports A/D converters and USB. A good candidate appears to be http://ww1.microchip.com/downloads/en/DeviceDoc/41124c.pdf Cost is approx. 5 USD.

Using an ARM processor just to convert some samples per second into USB appears to be overkill to me. But it is just one of the options to considered. A drawback appears that the ADC resolution is just 8 bit. This is quite coarse for some sensors. 12 bit wouldbe better.