Build a Realistic Liquid Rocket Injector Test Stand with Arduino Mega: Simulate LOX/Kerosene Valve Sequencing and Pressure Feedback

Every part needed, pre-tested for compatibility, with an AI build companion trained on this exact project. Shipped from Bengaluru in 3-5 days.

This kit places you at the heart of liquid propulsion engineering. Assemble a DIN rail‑mounted sequencer that mimics the injector timing of a LOX/kerosene engine: the Arduino Mega triggers an 8‑channel relay module using interrupt‑driven routines while four MPX5700 pressure sensors feed real‑time chamber data to the 2.4‑inch TFT. Every valve cycle, pressure plateau, and start‑up transient is logged with a DS3231 timestamp to a MicroSD card—giving you a complete digital twin of a static fire test, minus the cryogenics.

What You'll Build

You will build a hands‑on simulator that replicates the critical injector sequencing of a bi‑propellant rocket. The system opens and closes relays to simulate LOX lead, kerosene injection, and purge cycles with microsecond accuracy. Four pressure ports stream live curves to the ILI9341 display, letting you observe combustion chamber build‑up, steady‑state pressure, and shut‑down transients. The SD card log allows post‑test analysis of timing jitter and pressure stability, exactly as you would with flight hardware.

What You'll Learn

• Program Arduino Mega timers and interrupts for high‑precision relay sequencing
• Interface analog MPX5700 sensors and implement calibration routines for accurate pressure readings
• Log time‑stamped data to a MicroSD card using a DS3231 RTC for detailed post‑processing
• Design a multi‑screen TFT GUI that plots real‑time pressure and valve state indicators

Kit Contents

Why Buy This Kit Instead of Sourcing Parts Separately

Who This Kit Is For

Designed for final‑year B.Tech/MTech aerospace or ECE students at IIT, NIT, BITS, and VIT who want a lab‑grade propulsion control project. Engineers at Indian space startups and DRDO labs will find it ideal for prototyping injector algorithms before hardware‑in‑the‑loop tests. Serious rocketry hobbyists building liquid engines also gain a safe, simulation‑first environment to validate timing logic without dangerous propellants.

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.

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.