универсальные платы

самые дешёвые https://ru.aliexpress.com/item/10Pcs-DIY-Prototype-Paper-PCB-Universal-Experiment-Matrix-Circuit-Board-5x7CM/32546265487.html?spm=a2g0s.9042311.0.0.274233edMcx0K3
3х7 10шт https://ru.aliexpress.com/item/10pcs-3X7cm-3-7cm-Double-Side-Prototype-pcb-Breadboard-Universal-for-Arduino-1-6mm2-54mm-Practice/32655345057.html?spm=a2g0s.9042311.0.0.274233edt6TqKq
разные 20шт https://ru.aliexpress.com/item/20PCS-LOT-5x7-4x6-3x7-2x8-CM-Double-Side-Copper-Prototype-PCB-Universal-Board-Experimental-Development/32261738939.html?spm=a2g0s.9042311.0.0.274233edMcx0K3

Видео универсальные платы канала technogeek