MB102 Breadboard Power Supply Kit — 3.3V/5V Module + 400-Point Breadboard + Jumper Wires

MB102 Breadboard Power Supply Kit — 3.3V/5V Module + 400-Point Breadboard + Jumper Wires

This complete prototyping starter kit combines the MB102 breadboard power supply module, a 400-point solderless breadboard, and a set of flexible jumper wires — everything needed to start building and testing Arduino, ESP8266, ESP32, and general electronics circuits without soldering. The MB102 module accepts 6.5‑2V DC or USB input and provides selectable 3.3V and 5V regulated outputs directly to the breadboard power rails.

Kit Contents & Specifications

MB102 Power Module Specifications

Why Choose This Kit?

• All-in-one starter kit — power module + breadboard + jumper wires in one purchase, ready to use immediately
• Dual-rail power — MB102 provides independent 3.3V and 5V rails simultaneously for mixed-voltage circuits
• USB or DC input — power from USB phone charger or 9V/12V DC adapter
• 400-point breadboard — sufficient for Arduino Nano/Pro Mini + multiple sensors and components
• Flexible jumper wires — silicone-insulated, flexible wires that don’t stress breadboard connections

Compatible With

• Arduino UNO / Nano / Pro Mini: Power from 5V rail, connect GND to breadboard GND rail
• ESP8266 / ESP32: Power from 3.3V rail (ESP modules require 3.3V, not 5V)
• Raspberry Pi Pico: 3.3V rail for Pico VSYS or 5V rail for VBUS
• Sensors and modules: DHT11 (5V), BME280 (3.3V), HC-SR04 (5V), MPU-6050 (3.3V)

Frequently Asked Questions

Q: Can I power an Arduino UNO directly from the MB102 module?
A: Yes. Connect the MB102 5V output rail to the Arduino 5V pin and GND to GND. Do not connect to the Arduino Vin or barrel jack — connect directly to the 5V pin to bypass the Arduino’s onboard regulator. Ensure MB102 can supply enough current (Arduino UNO draws ~50mA idle, up to 200mA with peripherals).

Q: Can I use the MB102 module to power ESP32 directly?
A: Set the MB102 rail to 3.3V and connect to ESP32’s 3.3V pin and GND. The MB102 provides 700mA per rail, which is sufficient for ESP32 idle (~80mA) but may be marginal during WiFi transmission peaks (~300mA). For reliable ESP32 WiFi operation, use a dedicated 3.3V/1A regulator (AMS1117-3.3) or a USB power source.

Q: How many components can I fit on a 400-point breadboard?
A: A 400-point breadboard has 2×30 rows of 5 tie-points plus 2 power rails. It comfortably fits: Arduino Nano (30 pins) + 2–3 DIP-8 ICs + several discrete components. For larger circuits (Arduino UNO + multiple modules), use an 830-point breadboard instead.

Package Contents

• 1× MB102 Breadboard Power Supply Module (3.3V/5V)
• 1× 400-Point Solderless Breadboard
• 1× Set of Flexible Jumper Wires (M-M, assorted lengths)