Voice Assistant IR Blaster Kit with ESP32 + LED
Voice Assistant IR Blaster Kit with ESP32 – Bring Alexa Control to Every IR Device in Your Home
Every part needed, pre-tested for compatibility, with an AI build companion trained on this exact project. Shipped from Bengaluru in 3-5 days.
Imagine saying “Alexa, turn on the AC” or “Alexa, set the TV to HDMI 1” — and your entire living room responds instantly. This kit lets you build a universal IR command center that mirrors your voice into precise infrared signals, blending Alexa, IFTTT, and ESP32 into one custom system. You’ll move beyond app-based universal remotes and own the intelligence behind every IR button press.
What You'll Build
You’ll construct a compact IR blaster device housed in a palm‑sized enclosure. It listens for Alexa voice commands via IFTTT webhooks, decodes them on an ESP32, and fires pre‑learned IR sequences to your AC, TV, and soundbar — unifying three remotes into one hands‑free control point. The final unit sits discreetly near your entertainment center, reliably controlling devices even without line‑of‑sight.
What You'll Learn
- Configure an ESP32 as an HTTP endpoint to receive IFTTT webhook triggers securely
- Capture and replicate raw IR protocols using a TSOP1738 receiver and 940nm IR LEDs
- Set up IFTTT applets that link custom Alexa voice phrases to specific IR command sequences
- Design driver circuits with BC547 transistors and protection diodes for long‑range IR blasts
Kit Contents
| Component | Quantity |
|---|---|
| ESP32 Dev Board | 1 |
| IR LED 940nm | 3 |
| TSOP1738 IR Receiver | 1 |
| BC547 Transistor | 3 |
| 1N4007 Diode | 5 |
| 100Ω Resistors | 5 |
| 10kΩ Resistors | 5 |
| 100nF Caps | 5 |
| PCB Prototype Board | 2 |
| Enclosure Box | 1 |
| 5V 1A USB PSU | 1 |
| Soldering Iron | 1 |
| Solder Wire | 1 |
Why Buy This Kit Instead of Sourcing Parts Separately
| Factor | Sourcing Separately | Compoden Kit |
|---|---|---|
| Compatibility checks | You verify every part | Pre-tested as a system |
| Build support | Forums and scattered tutorials | AI companion trained on this exact project |
| Time to first working build | Days of debugging | Hours, with step-by-step guidance |
| Shipping coordination | Multiple sellers, multiple delays | One shipment from Bengaluru in 3-5 days |
Who This Kit Is For
Advanced makers, B.Tech ECE/EEE students tackling IoT home automation, Smart India Hackathon participants prototyping voice‑controlled environments, and working engineers who want a fully solder‑yourself solution to unify IR devices under one voice interface. If you’ve already built a few ESP32 or Arduino projects and are ready to integrate WiFi, cloud triggers, and hardware-driver design, this kit delivers exactly what you need.
Built and Backed by Compoden
Every Compoden kit ships with an AI build companion trained on this exact project — accessible via a QR code on the box, with WhatsApp and email backup. We've spent 10 years building projects for makers, schools, and institutions across India. If a part fails because of a manufacturing defect, replace it free within 7 days.
What if I get stuck during the build?
Scan the QR code on your kit’s box to open the AI companion trained on this exact project. It guides you step by step through wiring, coding, and IFTTT configuration. You can also reach us on WhatsApp for human backup within 24 hours.
Do I need to know how to solder?
Yes — the kit includes a soldering iron and you’ll assemble the driver circuits on a prototype board. Basic soldering experience is expected, but our AI companion shows clear joint-by-joint visuals and videos to help you get a neat result.
Can I control more than three devices?
Absolutely. The ESP32 can learn and store IR codes for dozens of devices. The kit includes three IR LEDs to cover a wide area, and the IFTTT‑Alexa pipeline can trigger any stored command, so scaling to additional AC units, set‑top boxes, or lights is straightforward.
Will this work if my remote uses a different IR frequency?
The kit is designed for the standard 38 kHz carrier used by almost all consumer IR remotes. If your device uses a less common frequency, the TSOP1738 may not decode it. In such rare cases, our support team can help you adapt the receiver or suggest a compatible alternate approach.
ESP32 receives Alexa webhook via IFTTT and transmits learned IR codes to control AC, TV and soundbar.
What's in this kit
- ESP32 Dev Board
- IR LED 940nm x3
- TSOP1738 IR Receiver
- BC547 Transistor x3
- 1N4007 Diode x5
- 100Ω Resistors x5
- 10kΩ Resistors x5
- 100nF Caps x5
- PCB Prototype Board x2
- Enclosure Box
- 5V 1A USB PSU
- Soldering Iron
- Solder Wire
Choose your assembly option:
- Soldering Kit — 25W soldering iron, 60/40 solder wire, flux, and small perfboard for permanent assembly.
- Breadboard Combo — 800-point full-size breadboard with 65-piece jumper wire pack for solderless prototyping.
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Shipping Information
- Prepaid Orders: ₹75 for orders up to ₹999, FREE shipping above ₹999
- COD Orders: ₹125 shipping + ₹50 COD fee = ₹175 total
- Delivery Timeline: Dispatch in 1-2 days, delivery in 2-7 days depending on location
Returns & Warranty
- 7-Day Return: Manufacturing defects only (approval required)
- Warranty: 7 days from delivery
- Non-Returnable: Batteries, consumables, cut wires, clearance items