Default resolution of arduino uno is 10 bits and duo is 12 bits. How can they be used for 14 bit or 16 bit resolution measurements ? (for eg. with external instrumentation amplifiers or with some add on shields of arduino?)
You could use overampling to improve the resolution of results. Since you refer to Arduino, here's an example application note from Atmel:
http://www.atmel.com/ja/jp/Images/doc8003.pdf
Hi...attached is the app note for AVR micros hope you can take the concept from that. It is mentioned that adc resolution can be enhanced by Oversampling which is described in the attachment.
If you can live with lowered sampling rates, Marek has already shown the cheapest and most intelligent approach!
If you don't mind additional hardware, ADCs with resolutions > 10 bit are available from AD (http://www.analog.com) or LT (http://www.linear.com).
I'm however not aware whether ready-made shields are commercially available.
Adafruit has a 14 and 16 bit (http://www.adafruit.com/product/1085). Not the cheapest, but comes on a breakout board and with great documentation.
I've used it on some projects and know researchers who have been very happy with it.
Hi, you could use 1 volt external reference to improve readings. normally arduino uno uses 5 volt reference so by 10bit ADC you can get a 4mv resolution, but if you use a 1 volt external reference then by10bit ADC you can get a 0.9mv resolution.
https://www.arduino.cc/en/Reference/analogReference
https://www.youtube.com/watch?v=obJkS2DT7vE
- Badges
- Science topic
- Similar topics
- Biological Science
- Bioecology
- Systems Ecology
- Landscape Ecology
- Connectivity