Generally speaking, from what I understand, most load cells are resistive devices, and many are just Wheatstone Bridges. Thus, your output will be an analog signal which will possibly need to be amplified and changed to digital, before the Stamp can process it.
Analog Devices (AD) offers a single chip, complete, analog front end for load cells which has a synchronous serial output. Any BS-2 Series Stamp can process this type of output, by using the SHIFTIN command. Here is a link to that AD chip:
you will need to get a specially designed amplifier for the thermocouple, one that provide a cold juction compensation and to amplify the mV signal into a more easily measured voltage, like this device (which outputs in digital, meaning you dont need an ADC as well): http://www.maxim-ic.com/quick_view2.cfm/qv_pk/3149
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1+1=10
Post Edited (Paul Baker) : 5/30/2006 3:22:12 PM GMT
Technics
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First I presume SB2 is a typo for the BS-2 Stamp?
Generally speaking, from what I understand, most load cells are resistive devices, and many are just Wheatstone Bridges. Thus, your output will be an analog signal which will possibly need to be amplified and changed to digital, before the Stamp can process it.
Analog Devices (AD) offers a single chip, complete, analog front end for load cells which has a synchronous serial output. Any BS-2 Series Stamp can process this type of output, by using the SHIFTIN command. Here is a link to that AD chip:
http://www.analog.com/en/prod/0,2877,AD7730,00.html
Regards,
Bruce Bates
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Thank you. Sorry for the typo, you gussed it right I wanted to say BS-2. What about the thermocouple?
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1+1=10
Post Edited (Paul Baker) : 5/30/2006 3:22:12 PM GMT