On 11/10/2019 5:52 PM, Dennis Lee Bieber wrote:
On Sat, 9 Nov 2019 21:19:35 -0800 (PST), in
gmane.comp.hardware.beagleboard.user Mala Dies
<[email protected]> wrote:
>from LDRII import MCP3008 #I found this source online and I cannot figure
out what site I found it at currently. Anyway...if this is your source, say
so! I will give you credit.
Based on Google, the MCP3008 is a multichannel ADC. The Raspberry Pi
examples require it because the R-Pi only has binary GPIO.
The BBB has internal ADC (though limited to 1.8V peak, so one often
needs a voltage divider to reduce 3.3V (or 5V) data to fit into 0..1.8V)
(for safety, one might want to limit the peak to 1.7V, and adjust the
conversion equation somewhat).
https://www.linux.com/tutorials/how-get-analog-input-beaglebone-black/
https://learn.adafruit.com/setting-up-io-python-library-on-beaglebone-black/adc
>from LDRII import MCP3008 #I found this source online and I cannot figure
out what site I found it at currently. Anyway...if this is your source, say
so! I will give you credit.
Based on Google, the MCP3008 is a multichannel ADC. The Raspberry Pi
examples require it because the R-Pi only has binary GPIO.
The BBB has internal ADC (though limited to 1.8V peak, so one often
needs a voltage divider to reduce 3.3V (or 5V) data to fit into 0..1.8V)
(for safety, one might want to limit the peak to 1.7V, and adjust the
conversion equation somewhat).
Using an opamp is much safer
https://www.linux.com/tutorials/how-get-analog-input-beaglebone-black/
https://learn.adafruit.com/setting-up-io-python-library-on-beaglebone-black/adc
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