- Tue Jan 24, 2017 7:00 pm
#61483
If the native power supply voltage works then that is the best choice.
- Tue Jan 24, 2017 7:09 pm
#61485
Well the native power supply voltage is actually 5V5 but that would mean having a 5V5 input on the sensor pin, when it is recommended not to even use 5V. I could drop the signal voltage down with a suitable resistor but 1) why, when 3V3 works just fine? and 2) what if I want to use a different sensor -the resistor on the pin might be the wrong size ?
rudy wrote:If the native power supply voltage works then that is the best choice.
Well the native power supply voltage is actually 5V5 but that would mean having a 5V5 input on the sensor pin, when it is recommended not to even use 5V. I could drop the signal voltage down with a suitable resistor but 1) why, when 3V3 works just fine? and 2) what if I want to use a different sensor -the resistor on the pin might be the wrong size ?
- Tue Jan 24, 2017 8:15 pm
#61487
Sorry I wasn't clear. Native = CPU (ESP) power supply.
- Tue Jan 24, 2017 9:49 pm
#61490
Ah, 3V3 then. Yeah, it seemed reasonable to me too.
rudy wrote:Sorry I wasn't clear. Native = CPU (ESP) power supply.
Ah, 3V3 then. Yeah, it seemed reasonable to me too.
