What it is and how it works
The kit includes one breadboard with 830 tie points. Metal contacts beneath its holes connect specific groups of terminals. Component leads and male jumper pins fit into the holes, allowing a circuit to be assembled without soldering.
Typically, short rows on each side of the centre gap form connected groups, while side rails distribute power. The centre gap separates the two halves. Power rails may be split in the middle: a printed line does not prove electrical continuity. The number 830 counts contact points on one board, not separate components.
What we can use it for
- Assemble an LED and resistor circuit and change its components easily.
- Connect buttons and a potentiometer to ESP32 inputs.
- Try several sensors before designing a permanent circuit board.
First exercise
With power disconnected, use a multimeter to find connected holes. Sketch one contact group and each power rail. Then assemble a simple LED circuit and trace the full current path on your sketch before powering it. This links the physical hole layout to the electrical circuit.
Handling notes
Avoid accidentally placing both leads of an LED or resistor in the same connected group. Keep 3.3 V and 5 V rails separate and clearly labelled, and change connections with power disconnected. A loose contact can resemble a software fault. Breadboards are for small, low-voltage prototypes, not mains voltage or high current.
Source: SparkFun — How to Use a Breadboard.