JLCPCB on X: "๐ฅ๐ฅGood News!!!๐ฅ๐ฅ ๐๐Price reduction : 4 Layer PCBs Start at $7 !! ๐๐$7 can get 5pcs (4 layer)!! https://t.co/kkbwVnYVb4" / X
What is that black layer on PCB #2? Do services such JLCPCB offer it? : r/diyelectronics
JLCPCB Electronic Manufacturer Custom PCBA SMT Board Prototype Order for ESP Anduino Printed Circuit Board Components