Arduino Pro Mini 328 - 3.3V/8MHz
Adafruit Trinket - Mini Microcontroller - 3.3v Logic - Like a Mini Arduino!
FT232RL FTDI USB to TTL Serial Adapter Module for Arduino Mini Port 3.3V 5.5V
Arduino Pro 328 - 3.3V/8MHz
365buying MB102 MB-102 Breadboard Power Supply Module 3.3V/5V For Arduino Board
16x2 LCD Module Blue with white Backlight for Arduino 3.3V
Sunkee GY-273 HMC5883L Triple Axis Compass Magnetometer Sensor Module For Arduino 3V-5V
SainSmart HMC5883L Digital Compass Module 3 Axis Magnetoresistive Sensor for Arduino UNO MEGA R3 Mega2560 Duemilanove Nano Robot
Fingerprint Scanner TTL GT511C3 - 3.3V to 6V
Ranking MB102 Breadboard 3.3V/5V Power Supply Module 3.3V/5V For Arduino Board
Hobbypower 3.3v/5v Power Supply Module Adapter for Mb102 Breadboard(pack of 3 Pcs)
Pro Mini ATMEGA328 3.3V/8M Microcontroller Board for Arduino (Works with Official Arduino Boards)
Pro Mini ATMEGA328 3.3V/8M Microcontroller Board for Arduino - Blue
FT231X Breakout
Weather Shield
Ranking MB102 Breadboard 3.3V/5V Power Supply Module 3.3V/5V For Arduino Board
50pcs Addicore White LED 5mm Clear Bright 14000mcd 3.3V (Pack of 50)
Phantom YoYo Octopus Soil Moisture Sensor Brick 100% Arduino Compatible
ZPS 3.3v 5.5v Ft232rl Ftdi Usb to Ttl Serial Adapter Module for Arduino Mini Port
SainSmart 8-Channel Relay Module
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Arduino 3.3V Popular Q&A
Q: Is the Arduino Due's 3.3v IO pin limit a mistake?
A: 3.3V logic is more popular than 5V logic. It may not be visible to the fairly closed ecosystem of Arduino shields and hobby-grade components, you can be forg... Read More »
Q: Can you combine 3.3v and 5v from an arduino to get 8v or more?
A: Without seeing the schematic, I cannot say whether the two voltage sources can be stacked to make an 8.3 v source. This is possible but unlikely. The much more ... Read More »
Q: How do I get an Arduino (5 V) and MPR121 (3.3 V) to talk?
A: You can do it using exactly two transistors, which is pretty slick. This comes straight from a Philips application note. Depending on the current draw of the de... Read More »
Q: How do I supply 3.3V from my 5V arduino pro mini?
A: I've supplied my 3.3V GPS module from a 5V ATMega328 by using two 1N4001 diodes in series. It was not an optimal solution at 3.0V, but it was cheap and I had th... Read More »
Q: For the Arduino Uno, should I use a 3.3V or 5V serial LCD?
A: The uno has a regulator on board to provide a3.3v rail. All of the arduino i/o lines are 5v however. You can use either type of display BUT you must be sure to ... Read More »
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