Voltages for connecting ds18b20 to Edison breakout board
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| Posted on July 20, 2017 at 02:27:48 | ||
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Posts: 2
Joined: July 20, 2017 |
It appears that the upm library provides support for reading temperatures from a ds18b20 on an Edison via uart. They also provide this hookup diagram. However, it looks like the ds18b20 can only operate at 5V while the UART TX and RX on the breakout board are at 1.8V (table 28). This upm diagram seems to suggest they should be directly connected though. I am hesitant to try it for fear of damaging the board or module. here is the datesheet of ds18b20:http://www.componentschip.com/pdf/6a-DS18B20-T-R.pdf Do I need to step the voltage up and down between the Edison uart and a 1-Wire bus? If so, what would be the appropriate way to do that?
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| Didn't you post this last month as yang1988 ?, posted on July 20, 2017 at 07:15:11 | |
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Posts: 46297
Location: USA Joined: June 22, 2001 Contributor Since: February 2, 2002 |
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