prototyping / jumper-wires.md

Jumper Wires (Dupont)

22 AWG hookup wires terminated with Dupont pin connectors. Sold in M-M, M-F, F-F varieties and as 10 / 20 / 40-strand ribbon cables.

Find on circuit.rocks

Variants

Type	Use
M-M	Breadboard ↔ breadboard, MCU header ↔ breadboard
M-F	Breadboard ↔ sensor module header
F-F	Sensor module ↔ sensor module
Ribbon (40-strand)	Pi GPIO breakout, parallel buses

Tips

• Dupont contacts wear out — replace any wire whose plug feels loose
• For permanent installs, crimp your own with a JST PA-09 or PA-20 crimp tool — store-bought jumpers are notoriously inconsistent
• Color-code: red = V+, black = GND, yellow = signal — saves time when debugging

Schematic

N/A — it's wire. See breadboard for the wiring substrate.

Last updated: 2026-05-13 · Source on GitHub