What does 3V3 or 1V8 mean? - Electrical Engineering Stack …
2012年3月14日 · 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?
How to correctly power an ESP32-H2 board with a battery
2024年5月10日 · 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 …
stm32 nucleo 3.3V usage - Electrical Engineering Stack Exchange
2021年7月16日 · 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 …
Converting universal AC to 3.3 V DC @ 0.1 A
2025年11月18日 · 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 …
Switching 3.3V with 3.3V signal - Electrical Engineering Stack …
2024年7月12日 · 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.
Raspberry Pi Pico 3.3V_EN pin control voltage inquiry
2021年6月22日 · The Raspberry Pi Pico seems to have a 3.3V_EN pin which is basically the 3.3V regulator enable pin (3V3_EN) pulled up to 5V through a 100K resistor internally. I am …
Powering Components with ESP32 - Electrical Engineering Stack …
2021年12月22日 · 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 …
pcb - IC power pins are the same voltage, can I route through …
2025年3月22日 · In order to make more space for the SPI CLK line, I was wondering if it would be OK to route through the decoupling capacitors for both VDDIO and VDD (which are both …
Is a 5 V or 3.3 V supply voltage better for a microcontroller based ...
2025年5月22日 · I am about to design a new microcontroller based project. I checked all components (few) and all can operate at 3.3 V or 5 V. The microcontroller itself can also …
microcontroller - Stepping down automotive 12V to logic 3.3V ...
2022年11月13日 · 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 …