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FTDI FT232RL USB to TTL Serial Converter Adapter Module 5V and 3.3V For Arduino. Use this to give your own breadboard Arduino USB capability for bootloading or downloading sketches. This board includes a DTR pin needed to auto-reset Arduino when downloading to your device.
When you click on links to various merchants on this site and make a purchase, this can result in this site earning a commission. Affiliate programs and affiliations include, but are not limited to, the eBay Partner Network.