Mar 14, 2012 · While reading a datasheet for an IC I came across the pin voltages being presented as 3V3 or 1V8. What does this representation stand for?

May 10, 2024 · I'd like to power my ESP32-H2-DevKitM-1 board with a 3.7 V, 2000 mAh Li-po battery. For this I think I must use this pin: Battery-3V3 The above picture is from the Pin Layout section of the

Nov 18, 2025 · I would seriously consider plugging in one of those tiny USB chargers for mobile phones, like the HTC chargers, and an LDO to bring the voltage down to 3.3 Volts, if this is a small run. For …

Jul 12, 2024 · The ESP32C3 has a battery input and a regulated 3V3 output, and the DFPlayer takes 3.3V power, so that would seem to be a straightforward way to power the circuit.

Jul 16, 2021 · When using an STM32 Nucleo powered by a 5V power supply, can I use its 3V3 pin to supply 50mA? Or do I need to use, for instance, a 3.3V linear regulator attached to my 5V power …

Dec 22, 2021 · The 3V3 output is just the output of the LDO on your ESP32 module, you can use it to power your 3V3 sensors, like the TSOP that requires 3V3. You can use the RC filter shown on …

Nov 13, 2022 · I'm building a kind of CAN bus IO module with an ESP32. This module will control the taillights of my electric conversion project. What is a robust (reverse polarity protection, overvoltage …

Jan 24, 2021 · Why do we use 3.3 V in circuits? Why not 3 V? Is there a specific standard? Or do we use it because it was 3.3 V from the beginning? I am just curious to know.

Apr 15, 2022 · I see no reason why this shouldn't work, at least for a "dirty solution". The inputs (driver input, driver/receiver enable) are recommended to be below 0.8V for a logic low and above 2V for a …

Oct 13, 2023 · I need to be able to switch on/off the 5V signal using a 3.3V signal from an arduino. I would prefer to avoid editing this signal in any way. So im assuming when using a shifter circuit you …