WiFIRCard – Tiny Wi-Fi + IR Powered Smart Relay Board

Meet WiFIRCard – a compact yet powerful IoT automation board that combines Wi-Fi, Bluetooth, IR control, dual relays, and GPIO expansion into a single device.

It’s smaller than a credit card, but packed with features that make it perfect for smart homes, industrial automation, and DIY IoT projects.

💡 This project is part of my Kickstarter campaign!

👉 Support WiFIRCard on Kickstarter

1. ✅ Smaller than a credit card
2. ✅ Powered by ESP32-S3 (Wi-Fi + Bluetooth 5)
3. ✅ Dual relays for AC/DC load control
4. ✅ Built-in IR receiver for remote learning & control
5. ✅ Handles up to 10A switching (250VAC / 125VAC AC loads, 24V DC loads)
6. ✅ Safe – opto-isolated relay design
7. ✅ Reinforced PCB tracks for durability
8. ✅ USB-C + Screw Terminal power input (5V)
9. ✅ Expandable GPIOs (headers + screw terminals)
10. ✅ Supports Arduino, MicroPython, CircuitPython, and C/C++
11. ✅ Works with Alexa, Google, MQTT, Blynk, Home Assistant

🔹 Core Specs

1. MCU: ESP32-S3 WROOM-1 (dual-core Xtensa® LX7, 32-bit)
2. Connectivity: Wi-Fi 2.4 GHz + Bluetooth 5 (LE)
3. Memory: Up to 16 MB Flash, 8 MB PSRAM
4. Modes: STA, AP, STA+AP

🔹 Relays & IR

1. 2x onboard relays (NO/COM/NC terminals)
2. Opto-isolated relays for safety
3. Built-in IR receiver for remote learning/emulation

🔹 I/O & Expansion

1. USB-C (power + programming)
2. TF card slot (data logging)
3. GPIOs exposed via screw terminals + headers
4. 2x programmable LEDs
5. Onboard buzzer

🔹 Power

1. Input: 5V (USB-C or screw terminal)
2. Switching capacity: 250VAC/125VAC (AC loads) or 24V DC (DC loads), up to 10A

WiFIRCard is designed for safe high-load automation:

1. Reinforced PCB tracks for maximum current flow
2. Opto-isolated relay design to prevent surges
3. High-low voltage isolation for protection
4. Reliable components built for long-term use

This makes it suitable for both DIY home setups and industrial environments.

WiFIRCard supports multiple development platforms:

1. Arduino IDE – simple coding with existing libraries
2. MicroPython – Python for microcontrollers
3. CircuitPython – quick prototyping with beginner-friendly Python
4. C/C++ – advanced, optimized projects

IoT Integrations:

1. Alexa & Google Assistant (voice control)
2. MQTT, Blynk, Home Assistant (cloud automation)
3. OTA (over-the-air) updates
4. Local + remote control

WiFIRCard opens up endless possibilities:

1. Smart home automation (lights, fans, appliances)
2. Voice-controlled IoT devices
3. Universal IR remote (TVs, ACs, projectors)
4. Industrial monitoring & control
5. Data logging dashboards
6. Cloud-integrated IoT systems
7. Motion-triggered automation
8. One-to-one or one-to-many device control networks

WiFIRCard gives you two options for connecting peripherals:

1. Screw Terminals – secure wiring for sensors & relays
2. Header Pins – quick prototyping with modules or shields

This dual system ensures both beginner-friendly setups and professional-grade expansion.

WiFIRCard isn’t just another ESP32 board – it’s a complete automation toolkit in a tiny package.

👉 Whether you’re automating your home, experimenting with IoT, or building industrial systems, WiFIRCard gives you everything you need in one compact, reliable board.

🚀 Want to get your own WiFIRCard?

👉 Back the Kickstarter campaign here!