The 6-channel, 4-channel and 2-channel converter boards seen from above at an angle, black with gold pads, each row of BSS138 transistors between two columns of labelled holes: A1 to A6 with LV and GND on one edge, B1 to B6 with HV and GND on the other.

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Logic Level Converter Kit, 27 Boards (2/4/6-Channel)

Five boards that let a 3.3 V board and a 5 V part share a wire safely. Which one to use for I²C, SPI, serial or an LED strip, which side is which, and the three wires that come before any signal.

Boards: 27× 2/4/6 CH
Low / high: 3.3 / 5V
Pull-ups: 10kΩ each side

Start here · 01 Two voltages, one wire The reference

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Logic Level Converter Kit, 27 Boards (2/4/6-Channel)

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