ESP8266 AC Temperature Setpoint Controller Kit
Create a DIY AC Thermostat with ESP8266 and DHT22 - No Original Remote Needed
Every part needed, pre-tested for compatibility, with an AI build companion trained on this exact project. Shipped from Bengaluru in 3-5 days.
If you have an older AC unit without a working remote or smart features, this kit lets you build a smart thermostat that automatically maintains your room's temperature. It's ideal for Indian college hostels, CBSE school projects, or anyone tired of waking up to a freezing room. You'll read real-time environment data and transmit precise infrared commands - turning a plain air conditioner into a self-regulating climate system.
What You'll Build
You'll assemble a compact circuit on a breadboard that combines an ESP8266 microcontroller with a DHT22 temperature/humidity sensor. The system learns your AC's infrared remote commands using the included TSOP1738 receiver, then retransmits them via high-power IR LEDs to turn the AC on/off and adjust settings. Once programmed, it continuously monitors the room and sends appropriate IR signals to keep the temperature at your chosen setpoint.
What You'll Learn
- Decoding and reproducing IR remote control signals for air conditioners
- Interfacing the DHT22 digital temperature and humidity sensor with NodeMCU
- Building a transistor-based IR blaster circuit for reliable long-range transmission
- Programming an ESP8266 to make autonomous decisions based on real-time sensor data
Kit Contents
| Component | Quantity |
|---|---|
| ESP8266 NodeMCU | x1 |
| DHT22 | x1 |
| IR LED 940nm | x2 |
| TSOP1738 IR Receiver | x1 |
| BC547 Transistor | x2 |
| 100? Resistors | x5 |
| 10k? Resistors | x5 |
| 100nF Capacitors | x5 |
| 400-pt Breadboard | x1 |
| Male-Male Jumper Wires | x20 |
| Micro USB Cable | x1 |
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
This kit is perfectly suited for CBSE Class 11-12 students working on IoT and automation projects, B.Tech ECE/EEE enthusiasts building mini projects, or participants in Smart India Hackathon looking for a practical home automation prototype. ATL Tinkering Lab mentors will also find it a great introduction to IR communication and environmental sensing.
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?
Every kit includes a QR code linking to our AI build assistant, which has step-by-step guidance specific to this project. You can also reach our team on WhatsApp for direct help.
Do I need to know my AC's remote control codes beforehand?
No. The included TSOP1738 IR receiver captures signals from any working remote, so the ESP8266 can learn and replay them. If your remote is lost, the companion documentation provides common AC protocol libraries.
Will this work with my split AC, window AC, or inverter AC?
Yes. The IR learning and transmission system supports virtually all air conditioners that use infrared remote control with a 38 kHz carrier, including split, window, and inverter models.
Can I control the AC setpoint from my phone later?
Absolutely. The ESP8266 has built-in Wi-Fi, so you can extend the project with a web interface or a platform like Blynk. The kit gives you a complete starting firmware and all the hardware needed for an upgrade.
ESP8266 reads DHT22 and transmits IR commands to AC unit to maintain setpoint without original remote.
What's in this kit
- ESP8266 NodeMCU
- DHT22
- IR LED 940nm x2
- TSOP1738 IR Receiver
- BC547 Transistor x2
- 100? Resistors x5
- 10k? Resistors x5
- 100nF Caps x5
- 400-pt Breadboard
- M-M Wires x20
- Micro USB Cable
Other projects you can build
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