RPI AD/DA Extend Board SKU:EP-0022
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RPI AD/DA Extend Board
Description
This RPI AD/DA extend board reads analog voltage by PCF8591 chip, it can drive DAC module but can not offer power output.
It can be read by shell scripts and it can measure from 0V to 5V. It may has some different value due to different environment.
Because of the conversion speed is a little bit slow and poor accuracy , power consumption is large, worst case needs 200mA.
Feature
- 1)Support I2C protocol
- 2)Convert Speed: Less than 1Ksps
- 3)Do Not offer input protect, so please be caution of the range of power supply.
- 4)Analog Output: 250nA
- 5)On-chip trace
- 6)8bit A/D convert
- 7)Dimensions: 1.9cm × 3.35cm
Presentation
Package includes
- 1x RPI AD/DA Extend Board
How to use
http://wiringpi.com/extensions/i2c-pcf8591/ 和 参照 http://www.52pi.net/forum.php?mod=viewthread&tid=813