@felmue if the margin above 3.3V is somehow related to the Feedback Reference Voltage than the datasheet confirms it’s 0.6V. That should be no problem as I think I’ll stay above 4.5V. Regarding the capacitor thanks for the hint, I’ll keep in mind that. I’m somehow limited in space but I believe it would be no problem finding something small to be connected on the cables just before the Stamp. Thanks again for the inputs.

@ajb2k3 some empirical evidence would be great, whenever you have time to check it. Thank you

@felmue thanks a lot. From the datasheet I see a range of 2.7 to 6.5V. So basically I have no problems going even lower than 4 volts. That’s great news! Thank you!

@ajb2k3 what about feeding it lower voltage at 5V. I read it has a DC DC incorporated so I was wondering what tolerance it has. Depending on the distance I will sometimes have 5, 4.9,4.6 volts. The lowest I’ll go as per my calculations is 4.6V.
Do you think this would be enough to safely power the stamp?

@felmue hi yes, not very good at reading schematics but I wasn’t able to find anything else other than the fact it needs 5v 500 mA. Am I missing something?

Hi all. Can anybody tell me which is the minimum and the maximum allowed voltage for Pico Stamp? I see it has a 5V DC DC so I was wondering if it can accept a lower voltage.

I’m designing the electric circuit in my new house and I was thinking to have cables with either 5v or 12v in every room wherever I will need an ESP32. So I was calculating the necessary cable diameter for 5V @ 500mA and the relative accepted voltage drop (cables will be up to 10-13mt long).

Thank you.