Breakout boards, shields and modules: buy with confidence and local support
When you need a reliable way to add sensors, comms or power to a prototype, choosing the right breakout board or shield is about more than price. At Communica we balance immediate availability, clear specifications and accessory compatibility so South African makers, students and engineers can move from breadboard to test rig quickly. Local stock reduces lead times, branch pickup removes shipping uncertainty and VAT invoices and account quotes make procurement straightforward.
Why price transparency matters for prototypes
A low unit price can hide important costs: voltage level shifters, headers, breakout cables or a required carrier board. We show component-level pricing and recommended accessory bundles so you can compare total landed cost for a classroom or small production run. For an immediate overview of categories and stock, visit our Shop by Category listing.
Specification callouts - what to check before you buy
Always confirm these minimum specs on the product page: operating voltage, logic level (3.3V vs 5V), I2C/SPI/UART bus options, onboard regulators and whether headers are soldered. For brand-level browsing and alternatives, see Shop by Brand.
- Voltage compatibility and on-board level shifting
- Pinout clarity and breakout of essential signals
- Mounting holes, board dimensions and shield stacking support
Quick spec comparison table
Use this compact comparison to filter choices rapidly.
| Type | Typical Use | Key Specs | Accessory |
|---|---|---|---|
| Sensor Breakout | Data logging, robotics | I2C/SPI, 3.3V, ±2g/±16g | 3.3V jumper cable |
| Wi-Fi / BLE Module | IoT endpoints | UART, 802.11/n or BLE 5.0, onboard antenna | USB-to-UART adapter |
| Power/Regulator Board | Battery-powered projects | Input 5-12V, 3.3V/5V outputs, 1A-3A | Heat-sinking pads |
Practical wiring example
This ASCII wiring snippet shows a common I2C hookup between a microcontroller and a sensor breakout (pull-ups on the board assumed):
MCU (3.3V) | SDA ----- SDA sensor | SCL ----- SCL sensor | GND ----- GND sensor | 3.3V ---- VCC sensor
If your board runs at 5V or lacks level shifting, add a logic-level translator or choose a 3.3V-compatible module. For testing tools and headers to speed assembly, check our All Products index.
