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Gearmo USB to 3.3V / 5V TTL Auto sensing adapter : Electronics
3 Functions Usb Power Supply Module 5v To 3.3v Dc-dc Step-down Buck Ams1117 Ldo Module - Integrated Circuits - AliExpress
/TTL-232R-3V3.jpg "TTL-232R-3V3 FTDI, Future Technology Devices International Ltd | Cable Assemblies | DigiKey")
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AMS1117 3.3V CJMCU Mini USB 5V/3.3V DC Power Supply Module Socket Board | ElectroPeak
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Amazon.com: CE009 Step-Down Module USB Power Supply 5V to 3.3V DC-DC Buck Converter Module for Raspberry Pi/Esp8266 : Electronics
USB to 3.3V TTL Converter
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SparkFun Breadboard Power Supply USB - 5V/3.3V - PRT-08376 - SparkFun Electronics
FT232RL FTDI USB 3.3V 5.5V to TTL Serial Adapter Module for Arduino Mi – JemRF
USB to 3.3V 5V TTL Adapter RS232 to TTL Converter
5 Pack) JacobsParts DC Boost Module 3V 3.3V 3.7V 4.2V Input 5V 2A USB Output 10W DIY Power Bank : Electronics
