LCD Digital Storage Oscilloscope/Frequency Meter DIY Kit with Professional BNC Probe USB Interface DSO 20MSa/s 3MHz - Walmart.com
DPScope - Build Your Own USB/PC-Based Oscilloscope : 38 Steps (with Pictures) - Instructables
Diy Digital Oscilloscope Kit Osciloscopio Electronic Learning Kit Dso138 Kit 2.4" 1msps Usb Handheld Oscilloscope - Instrument Parts & Accessories - AliExpress
Dso138 Ds0138 2.4" Tft Pocket-size Digital Oscilloscope Kit Diy Parts Handheld Dso138 (not Include Acrylic Diy Case) - 3d Printer Parts & Accessories - AliExpress