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5V to 3.3V logic level translation/conversion/shifting: how to interface a 5V output to a 3.3V input. – next-hack.com
USB-AtmelPrg: External 3.3V Level Converter
DC-DC 5V to 3.3V 9V 12V 24V Adjustable USB Boost Buck Step Up Down Potentiometer Power Supply Converter Voltage Volt Regulator - RC GEAR BD
DC-DC 5V to 3.3V 9V 12V 24V USB Step UP / Down Power Supply Module Adjustable Boost Buck Converter Out DC 1.0V-24V With Case - AliExpress
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DC-DC USB 5V to 3.3V/12V Step UP/Down Power Supply Module Boost Buck Converter | eBay
3.3V to 5V DC-DC converter. « Circuits@Home
UART-TTL USB adapter for 3.3V and 5V with CH340G converter and jumper cable compatible with Arduino
AK-USBSUPPLY-C 3.3V and 5V Power Supply from USB-C | Artekit Labs
5V to 3.3V Converter | how to use 5v to 3v DC Resistor - YouTube
FT232 FTDI Adapter Converter FT232RL USB To TTL Serial 3.3V & 5V COM35 , R35 - Faranux Electronics
USB With Current Micro USB 5V to 3.3V 9V 12V 18V 24V Adjustable LED Display Buck-Boost Power Supply Voltage Regulator Module - RC GEAR BD
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USB to TTL Converter USB to UART Module 5V/3.3V/1.8V FT232RL Code Programmer Downloader - USB to TTL Module - Arduino, Robotics, Raspberry Pi, ESP8266, Learning DIY, Development board ICStation
AK-USBSUPPLY – 3.3V and 5V Power Supply From USB | Artekit Labs
DC-DC USB Step UP/Down Power Supply Module Adjustable Converter 5V to 3.3V/12V | eBay
