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?

Feb 4, 2022 · I am trying to design a circuit to control a G6S-2 12V relay that powers on/off a 12V device using a GPIO from an ESP32-WROVER and one PC817 optocoupler. This is the circuit that I have …

Apr 6, 2021 · How to switch best between two voltage sources (5V & 3V3) for a "load" (e.g. a sensor in the application field or Arduino/Raspberry Pi/etc.). The basic setup is as follows: there are two …

Oct 6, 2022 · How do I interface 3.3 V Input/Output to 5 V Output/Input? I need it primarily for an Arduino Due but any general purpose bidirectional circuit (or IC) would work. Some people advised me to use …

I'm currently working on the development of some measurement equipment. For conversions I use a small ARM which runs on 3V3 and to display the results I use a graphical display running on 5V. This ...

Jun 22, 2021 · 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 confused how …

Feb 4, 2020 · In this diagram, there are two devices connected to the 3v3 pin. Is there any limit to the number of devices that can be connected to that pin, so as not to damage anything? Multiple i2c …

Apr 24, 2022 · The MCU outputs 3V3 signals. I have tested the IRBL8721 Power MOSFET and also the IRFZ44 (without the microcontroller) at a variety of gate voltages and they both carry the load just …

Oct 28, 2022 · Can I safely power a LED with 3.3 V without a resistor? I have some LEDs that I typically power with 5 V and a 220 Ω resistor, but I can only supply 3.3 V at the moment. Additionally, I have …

May 13, 2024 · When I try to power it from 3V3-Battery pin using a very reliable power supply (Keithley Model 2231A-Triple-channel DC Power Supply) the board doesn't work fine and Matter doesn't work …