Initially I had some programming problems, but the problem turned out to be the "modemmanager" package in Linux, which is blocking the USB serial connection. Removing it allowed it to be programmed with the "Leonardo" setting in the Arduino IDE.
REXQualis Comprehensive Starter Kit with Arduino MEGA 2560 & Detailed Tutorial for Arduino IDE Compatibility
11 Review
LAFVIN Super Starter Kit for Arduino R3 Mega2560 Mega328 Nano with Detailed Tutorial - Compatible with Arduino IDE
11 Review
Gikfun Screw Shield Expansion Board: Enhance Arduino UNO R3 with the EK7007 Add-On
11 Review
55" TV LG OLED55C2RLA 2022 HDR, OLED, dark titanium
38 Review
Comprehensive 500pcs Laptop Screw Kit Set for ๐ฉ IBM HP Dell Lenovo Samsung Sony Toshiba Gateway Acer
12 Review
Glarks 660 Pieces Phillips Assortment Motherboard
10 Review
๐ฅ๏ธ Helifouner 450-Piece Computer Standoffs Spacer Screws Kit: Ideal for Hard Drive, Motherboard, Fan, Power Graphics & Computer Cases
10 Review
uxcell 3.5" HDD Screw Black 200pcs for Computer PC Case - Flat Phillips Head - 6#-32 - Hard Drive Fasteners
10 Review