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Control Arduino & ESP boards with custom dashboards, cloud sync, and AI.
CircuitNexus is a modern IoT control app for makers, students, and hobbyists who work with Arduino, ESP32, ESP8266, and compatible boards. Design beautiful device dashboards on your phone, flash ready-to-use firmware, and control your hardware from anywhere — over Wi‑Fi, Bluetooth, BLE, or the cloud. ━━━ DRAG & DROP DASHBOARDS ━━━ • Build custom control panels with 25+ widget types • Buttons, sliders, LEDs, gauges, charts, joysticks, terminals, and more • Drag widgets into place and edit layouts in seconds • Rename devices and personalize each dashboard ━━━ EASY DEVICE SETUP ━━━ • Add a device in a few taps — choose board type and connection method • Auto-generate Arduino firmware with your server key and widget pins • Download a ZIP package, share it to your PC, or open the web install guide • Push OTA updates to ESP32 devices that are already online ━━━ CONNECT YOUR WAY ━━━ • Wi‑Fi, Bluetooth Classic, BLE, and cloud relay • Live online/offline status for cloud-linked devices • Optional Google Sign-In for sync, server key, and cloud features • Guest mode for local use without an account ━━━ AI-POWERED ASSISTANT ━━━ • Chat with Gemini AI to control devices and get automation ideas • Voice command support for hands-free control • Smart suggestions based on your device setup ━━━ BUILT FOR MAKERS ━━━ • Dark theme and multi-language support • Firebase cloud backend for device sync and remote access • Privacy policy and account deletion options • Pro upgrade available to remove ads (one-time purchase) Whether you are prototyping a smart home project, teaching IoT in the classroom, or monitoring sensors in the field, CircuitNexus gives you a polished mobile command center for your circuits. Hardware required: compatible Arduino or ESP board and optional Wi‑Fi/Bluetooth connectivity. Questions or account requests: see in-app Settings → Legal, or our support email on the Play Store listing.