2022-06-15, 02:08 PM
Hello,
I have two questions regarding the current-sense "shunt."
Question 1:
The "motor.ino" in the tinypilot/pypilot image states: "adc pin1 goes to .01/.05 ohm shunt to measure current."
I have no resistors which are 0.01 or 0.05 ohms. And that seems really low-resistance, so I'm concerned it's a misprint. And "sense.sch" specifies a 560 ohm resistor. So that raises for me a question: What resistance should I be using here?
Question 2:
To where does the shunt go, exactly? The file "sense.sch" shows a wire from A1, through the 560 ohm resistor, to a symbol simply labeled "shunt". Exactly how does it get hooked up?
Best regards,
Adrian Vrouwenvelder
I have two questions regarding the current-sense "shunt."
Question 1:
The "motor.ino" in the tinypilot/pypilot image states: "adc pin1 goes to .01/.05 ohm shunt to measure current."
I have no resistors which are 0.01 or 0.05 ohms. And that seems really low-resistance, so I'm concerned it's a misprint. And "sense.sch" specifies a 560 ohm resistor. So that raises for me a question: What resistance should I be using here?
Question 2:
To where does the shunt go, exactly? The file "sense.sch" shows a wire from A1, through the 560 ohm resistor, to a symbol simply labeled "shunt". Exactly how does it get hooked up?
Best regards,
Adrian Vrouwenvelder