SunFounder ESP32 Starter Kit
5.6 Jumper Wires
Wires that connect two terminals are called jumper wires. There are various kinds of jumper wires. Here we focus on
those used in breadboard. Among others, they are used to transfer electrical signals from anywhere on the breadboard
to the input/output pins of a microcontroller.
Jump wires are fitted by inserting their “end connectors” into the slots provided in the breadboard, beneath whose
surface there are a few sets of parallel plates that connect the slots in groups of rows or columns depending on the
area. The “end connectors” are inserted into the breadboard, without soldering, in the particular slots that need to be
connected in the specific prototype.
There are three types of jumper wire: Female-to-Female, Male-to-Male, and Male-to-Female. The reason we call it
Male-to-Female is because it has the outstanding tip in one end as well as a sunk female end. Male-to-Male means
both side are male and Female-to-Female means both ends are female.
More than one type of them may be used in a project. The color of the jump wires is different but it doesn’t mean their
function is different accordingly; it’s just designed so to better identify the connection between each circuit.
698 Chapter 5. Learn about the Components in Your Kit
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