Aquaponics Water Quality Kit with Raspberry Pi Zero + Relay
Offline Voice-Controlled Aquaponics Kit with Raspberry Pi Zero & Relay
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 walking into your aquaponics zone and saying “Turn on grow bed pump” or “Switch off fish tank lights” — with no internet connection, no cloud, and no privacy trade-offs. This kit lets you build a completely offline voice assistant using a Raspberry Pi Zero W, Rhasspy, and a 4-channel relay module, so you can voice-control water pumps, grow lights, aerators, and more just by naming the room or device. Everything stays local on your network, and your voice never leaves the device.
What You'll Build
You’ll assemble and configure a dedicated voice-control node that listens for a custom wake word (like “Hydro”) and then responds to commands such as “fish tank on” or “grow bed off.” The Pi Zero W runs Rhasspy entirely offline, processes spoken commands, and drives up to four 230V AC appliances through the relay module — all without touching a smartphone or cloud service. The result is a private, reliable, and hands-free way to manage your aquaponics environment.
What You'll Learn
- Installing and setting up Rhasspy for offline voice processing on a Pi Zero W
- Configuring wake words and intent recognition without any cloud dependency
- Wiring and controlling a 4-channel relay module safely using GPIO pins
- Soldering a 40-pin GPIO header, amplifier-speaker circuit, and diode protection for inductive loads
Kit Contents
| Component | Quantity |
|---|---|
| Raspberry Pi Zero W | 1 |
| USB Microphone | 1 |
| PAM8403 Amp | 1 |
| 3W 8Ω Speaker | 1 |
| 4-ch Relay Module | 1 |
| 1N4007 Diode | 5 |
| 40-pin GPIO Header | 1 |
| M-F Wires | 20 |
| MicroSD Card 16GB | 1 |
| 5V 2A 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
This kit suits advanced hobbyists, B.Tech ECE and EEE final-year students, and researchers working on smart agriculture or IoT projects. If you’re building a prototype for Smart India Hackathon, an IIT/NIT capstone, or your own hydroponic setup, the offline voice control design gives you a compelling edge over common cloud-dependent solutions. Basic soldering skill and familiarity with Raspberry Pi are assumed.
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 included in the box to access the AI build companion, which can answer questions specific to your kit. If you need human help, reach out via WhatsApp — we’ll respond within hours.
Does the voice control really work without internet?
Yes. Rhasspy runs entirely on the Pi Zero W and uses offline speech-to-text and intent recognition. No Wi-Fi is needed after setup, and your voice data never leaves the device.
Can I control more than four appliances?
The kit includes a 4-channel relay module, so you can switch up to four devices. You can add another relay module later and configure additional GPIO pins, but you may need an external power supply for the relay coils.
What wake word is used, and can I change it?
You can set any wake word you prefer — like “Computer,” “Hydro,” or “Jarvis” — during the Rhasspy configuration step. The companion guide walks you through recording and using your own wake word.
Aquaponics — Pi Zero W runs Rhasspy offline. Wake word triggers relay zones by room name without any cloud.
What's in this kit
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.
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