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?

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, 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 …

Jul 21, 2020 · What I'm trying to do This question is about the use of any 3V3 supply microcontroller to drive 5V powered relay modules which are available from many suppliers. I have provided details …

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 …

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 ...

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 …

Dec 14, 2020 · What is the meaning on a circuit board pin out when you see 3.3V2 or 3.3V3 or 3.3v4 etc.

Feb 1, 2022 · In a recent project of mine using an ESP32 and a CC1352, I noticed that on both programming headers there are 3V3 and GND pins, which are, I suppose, to power the device if you …

Oct 22, 2024 · Just to clarify you do need to match voltages for RO, DI, DE, /RE but these must be compatible with your microcontroller -- I believe Piccolo is a 3V3 device but the MAX485 is 5V.