Under $25

You do not need to spend $100 to start building. Every product in this collection costs $25 or less, and many of the most capable maker components, like ESP32 dev boards, Zigbee sensors, and LED modules, live in this price range. What can you build for under $25? An ESP32-C3 SuperMini costs under $5 and gives you WiFi, Bluetooth, and 13 GPIO pins. Add a $3 relay module and you have a WiFi-controlled switch. Add a $4 OLED display and you have a mini dashboard. Add a $6 DHT22 sensor and you have a connected weather station. Most first projects cost between $8 and $20 in total components. Are cheap boards worth buying? Yes, for prototyping and learning. The ESP32-C3 at $4 uses the same Espressif chip as boards costing 5 times more. The main tradeoffs at low price points are: fewer GPIO pins, no USB-C (some use micro-USB), less onboard flash, and occasionally inconsistent quality control. For production projects or heavy daily use, stepping up to a branded LILYGO or M5Stack board is worth it. For learning, experimenting, and disposable sensor nodes, budget boards are ideal. Most popular items under $25. ESP32-C3 SuperMini: $4 (WiFi + BLE, perfect for ESPHome) Zigbee door sensor: $8 (works with Home Assistant) 0.96" OLED display: $4 (I2C, works with any ESP32) WS2812B LED strip (1m): $6 (addressable RGB, WLED compatible) INMP441 microphone: $3 (for sound-reactive LED projects) Budget maker gear is one of the reasons the hobbyist electronics market reached $2.1 billion in the US in 2025 (Grand View Research), with the average project cost dropping 35% since 2020 thanks to ESP32 and similar low-cost platforms. Last updated: April 2026

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