Kabelmeister 40-Pin Jumper Wire Set, 3 Ribbons (Male-Male, Female-Female, Male-Female), 20 cm, 24 AWG, Rainbow Colours, for Arduino, Raspberry Pi, Breadboard

Prototyping on a breadboard with an Arduino or Raspberry Pi often means dealing with dozens of loose wires that tangle and pull out at the worst moment. This Kabelmeister jumper wire set brings order to that chaos: three 40-pin ribbons with individually separable conductors, each terminated with the connector combination you need for a given connection. One ribbon is male-to-male, one female-to-female, and one male-to-female, so you can link header pins, sockets, and mixed layouts without hunting for adapters.

Key specifications

• Three 40-pin ribbon cables: 1× male-to-male, 1× female-to-female, 1× male-to-female
• Individual wires can be separated from the ribbon for custom routing
• Wire length: 20 cm per conductor
• Wire gauge: 24 AWG (tinned copper conductor, PVC insulation)
• Connector pitch: 2.54 mm (0.1 inch) – fits standard pin headers and breadboards
• Voltage rating: 50 V DC max; current rating: 1 A max
• Operating temperature: -20 °C to 85 °C
• Rainbow colour coding for easy signal tracing

Why choose it

Unlike loose jumper wires that come in a jumbled bag, this set keeps all 120 conductors neatly organised until you need them. The ribbon format lets you peel off exactly the number of wires you require, while the remaining wires stay flat and manageable. The three connector combinations cover virtually every prototyping scenario, from connecting two male headers to linking a sensor with a female socket to a male pin on a microcontroller. The 24 AWG tinned copper conductors are robust enough for repeated insertion and removal, and the PVC insulation resists nicks and abrasion on the workbench.

Ideal use cases

• Breadboard prototyping with Arduino, Raspberry Pi, ESP32, and other development boards
• Connecting sensors, displays, and modules that use 2.54 mm pin headers or sockets
• Creating temporary or semi-permanent wiring harnesses for DIY electronics projects
• Educational settings where students need reliable, colour-coded connections
• Repair and testing of circuits that require flexible jumper leads

Good to know

The rainbow colours are not just for looks – they make it much easier to follow a signal path across a crowded breadboard. Each ribbon is 40 pins wide, so you can split it into smaller groups (e.g., 8-pin, 10-pin) for common buses like SPI or I2C. The connectors are standard 0.1 inch pitch, compatible with all major prototyping platforms. Store the unused ribbons in the original packaging to keep them flat and tangle-free.