3-Pack Breadboard Power Supply, 3.3V/5V USB-C

• 3.3V/5V SWITCHABLE OUTPUT Toggle between 3.3V and 5V with a slide switch, up to 500mA per module (PPTC protected) — for powering Arduino, Raspberry Pi, Pico W, ESP32, and other microcontrollers without extra adapters.
• BUILT-IN SAFETY PROTECTION PPTC resettable fuses limit current to 500mA per module to help prevent overloads and short circuits — suitable for beginners and experienced makers working on STEM projects.
• USB TYPE-C CONNECTIVITY USB Type-C input (5V DC) for power from laptops, power banks, or USB hubs — reduces wiring for portable prototyping setups.
• LED POWER INDICATORS Dual LEDs (red for 5V, blue for 3.3V) show active voltage status for safe operation and quick troubleshooting during DIY builds.
• COMPACT 3-PACK, FOR LOW-POWER LOADS Plugs directly into standard solderless breadboard power rails. Suitable for logic circuits, sensors, displays, and single dev boards (up to 500mA). For high-current loads like motors or large LED arrays, use a dedicated supply. Pack of 3. Note orientation to avoid reversed polarity.
• RELIABLE VOLTAGE STABILITY Measured outputs of ~3.27V (3.3V nominal) and ~4.92V (5V nominal) with minimal drop; great for quick prototypes, though note orientation to avoid reversed polarity.

Lonely Binary 3-Pack Breadboard Power Supply Modules

The Lonely Binary Breadboard Power Supply Module is a compact power adapter for electronics prototyping on solderless breadboards. This 3-pack plugs directly into the power rails of your breadboard (sold separately) to provide voltage for your circuits, reducing wiring and external adapters. Suitable for hobbyists, students, and makers working on prototypes, testing, or STEM projects with boards like Arduino, Raspberry Pi, Pico W, and ESP32.

Key Features

Switchable Voltage Outputs: Select between 3.3V and 5V with a slide switch. Built-in 500mA PPTC fuses for overload protection.

Type-C Input: USB Type-C port for power from any 5V source, such as laptops or hubs.

Safety and Convenience: Resettable fuses protect components; LED indicators (red for 5V, blue for 3.3V) for status monitoring. Install on the correct end of the breadboard for proper polarity.

Compatibility: Works with ESP32 development boards, sensors, LEDs, and other digital/analog projects.

Specifications

Output Voltage: 3.3V / 5V (switchable)

Output Current: up to 500mA per module (PPTC resettable fuse protected)

Measured Output: approximately 3.27V (3.3V setting) and 4.92V (5V setting), with minimal drop

Input Voltage: 5V DC via USB Type-C

Note: No batteries; for direct-power stationary setups. Slight voltage drop on output is normal and does not affect most ICs.

Suitable For

Low-power loads such as logic circuits, sensors, displays, and single development boards (up to 500mA). For high-current loads such as motors or large LED arrays, use a dedicated power supply.

For projects needing both voltages simultaneously, use separate modules set to each voltage.

Note

Breadboards are not included in this pack.

Designed in Australia

Lonely Binary is an independent Australian brand focused on open-source maker hardware.

Specifications