Timeline for Why is there a third connection to the host in this 3 wire current output sensor diagram?
Current License: CC BY-SA 3.0
8 events
| when toggle format | what | by | license | comment | |
|---|---|---|---|---|---|
| Feb 15, 2018 at 9:43 | vote | accept | Oliver Walters | ||
| Feb 15, 2018 at 0:18 | answer | added | Majenko | timeline score: 0 | |
| Feb 14, 2018 at 20:50 | comment | added | dandavis | Digital Multi Meter; you can use it to tell if your setup works w/o frying your uno | |
| Feb 14, 2018 at 20:22 | comment | added | Oliver Walters | @MichelKeijzers Hi, I know. I thought 3 wire sensors you can simply connect a 250Ohm shunt resistor to the current output, and measure the voltage drop across that, which should then only be 0-5V. But I don't understand why the diagram says connect the power supply to the host as well? | |
| Feb 14, 2018 at 20:19 | comment | added | Oliver Walters | @dandavis Hi, try what with a DMM? The voltage across +UB and ground on the sensor? The diagram came from the datasheet for the sensor | |
| Feb 14, 2018 at 20:12 | comment | added | dandavis | where did the diagram come from? Try it with a DMM and see what your ranges are | |
| Feb 14, 2018 at 20:09 | comment | added | Michel Keijzers | If the sensor outputs 12V I wouldn't advice connecting it directly to an Arduino GPIO. | |
| Feb 14, 2018 at 19:05 | history | asked | Oliver Walters | CC BY-SA 3.0 |