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A hands-on tour of the ESP32 starter kit, with components, uses, safety notes and an unboxing video.
YOUTUBE
A first look at the hardware and what each part is for.
THE HARDWARE
A practical identification guide based on the photographed components.
Main development board with Wi-Fi, Bluetooth, Micro-USB, EN and BOOT buttons.
Generic 30-pin version. EN resets the board and BOOT helps enter flashing mode. GPIO uses 3.3 V logic.
Home automation, connected sensors, web servers and control projects.
Important: The shield is marked ESP-32; exact module vendor and flash capacity need software verification.
Detects changes in infrared radiation caused by moving warm objects.
The white dome is a Fresnel lens. Output is typically digital: it signals motion but does not measure distance.
Motion alarms, automatic lights and home automation.
Important: Exact model and pin order need checking on the back.
Measures ambient temperature and relative humidity.
Typical range: 0–50 °C and 20–80% relative humidity; typical accuracy around ±2 °C and ±5% RH. Single digital data line.
Weather station, ambient monitor and ventilation control.
Important: Check S, + and − pin markings before wiring.
Detects changes in ambient light using a photoresistor.
Likely LM393 comparator module with analogue AO and digital DO outputs plus a threshold adjustment potentiometer.
Automatic lights, blinds and lighting control.
Important: Prefer 3.3 V with ESP32 and verify the four-pin order.
Emits infrared light and senses reflection from nearby objects.
Includes a clear IR emitter, dark receiver, sensitivity adjustment and digital OUT. Range depends on surface and ambient lighting.
Obstacle-avoiding robots and object detection.
Important: Does not measure exact distance. Visible pins: OUT, GND and VCC.
Two electromechanical switches controlled by a microcontroller.
Songle SRD-05VDC-SL-C 5 V coils; COM, NO and NC contacts per channel. Contact ratings marked up to 10 A depending on load and conditions.
Switch low-voltage loads and build automation projects.
Important: Avoid mains power as a beginner. Check 3.3 V input compatibility and JD-VCC wiring.
Small display for text, icons and simple graphics.
Approximately 0.96-inch module, likely 128 × 64 pixels with SSD1306 or compatible controller. GND, VDD, SCK (I²C clock) and SDA.
Display temperature, humidity, menus and status.
Important: Resolution, controller and exact supply range still need checking.
Reusable solderless board for prototyping circuits.
630 centre tie points and 200 power-rail points. Each group of five centre holes is internally connected.
First circuits, LED and sensor prototypes.
Important: Side power rails are split in the middle; bridge them if needed.
Reusable wires for joining breadboards and modules.
Three types: male–male, male–female and female–female; common 2.54 mm pitch connectors.
Quick solderless prototype wiring.
Important: Wire colour does not determine its electrical function.
Passive components for limiting current and dividing voltage.
The photo shows ten blue-bodied axial resistors, likely metal-film types. Their resistance is read from colour bands.
Limit LED current and build voltage dividers.
Important: Ohmic value and wattage unconfirmed. Illustration shows 220 Ω as an example, not a verified kit value.
Three single-colour LEDs and one clear four-lead RGB LED.
Red, yellow and green LEDs have two leads; the RGB LED has three colour channels and a common lead. It may be common-anode or common-cathode.
Indicators, traffic lights, signals and dimming.
Important: Each channel needs current limiting. Illustration is indicative; check the actual four RGB leads.
Momentary switch that closes the circuit while pressed.
Approximately 12 × 12 mm, normally open, usually four leads. Can use INPUT_PULLUP between GPIO and GND.
Toggle LEDs, change menus or trigger functions.
Important: Leads on the same side may be internally connected; check orientation.
Produces audible alerts and sound signals.
An active buzzer sounds when powered; a passive buzzer needs an oscillating signal and can play different tones.
Alarms, alerts and button feedback.
Important: Active/passive type, voltage and current draw remain unverified.
10 kΩ linear variable resistor with a rotating shaft.
The outer terminals form a roughly 10 kΩ track; the middle lead is the wiper. Between 3.3 V and GND it produces a variable analogue voltage.
Brightness control, menus and manual adjustments.
Important: Do not feed an ESP32 analogue input above 3.3 V.
NEXT STEPS
Start with an LED and resistor, then a button, a sensor and the OLED display. Power the ESP32 from USB and use 3.3 V logic for GPIO.
Electronics learning journey →