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nrf52-rocket's Introduction

nRF52 Rocket

Check out the official Launch Video from Nordic Semiconductor!

Table of Contents

This repository contains the firmware and hardware files for the first launched BLE rocket prototype.

Introduction

As the BLE standard (namely Bluetooth 5.0) enables higher TX power and thusly communication range, it becomes more and more viable to use Bluetooth LE for mid-range RC toys in the proximity of around 100 - 500 m. BLE provides the benefits of high interoperability amongst different manufacturers due to rigorous standardization compared to other frequencies, yet less power consuming than Wifi.

The model rocketry industry drives a very popular hobby, especially in the U.S., that inspires youth and adults to engage in science and engineering. Yet, through some web research it appears that there is a gap between really simple beginner rockets with less than 200 m of flight range which are completely made out of cardboard and wood with no electronic flight telemetry or electronic parachute deployment; and the advanced heavy duty rockets with expensive electronics that can go up to kilometers.

A BLE enabled model rocket can serve the hobbyists who want to be a little more serious with their rocket flying and track their rockets performance in real time and have smart parachute deployment, but do not have the funds or the skills to buy/build a super hardcore rocket that costs thousands of dollars.

Hardware

Rocket:

Electronics

Componenet Type Part Number Function
Processor/RF nRF52 Flight Control, launch control, telemetry, communication with ground station
Radio Amplifier (PA + LNA) Skyworks 66112-11 Boost RF range
IMU MPU9250 Orientation tracking, parachute deployment upon flight peak
Pressure MPL3115A2 Altitude tracking based on atmospheric pressure, parachute release timing upon flight peak
Humidity/Temperature HTU21D Environment monitoring
Servo Motors Tower Pro SG90 Parachute release mechanism
5V Boost Converter MIC2875 Ignition and servo power
3F Supercapacitor PM-5R0H305-R High current ignition reservoir
3.3V LDO AP7333-33SAG-7 nRF52/sensor power
USB 4.2V LiPo Charger AAT3681A Charging

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Mechanical

Component Type Part Number Function
Rocket Motor Klima D9-P Propulsion
Electronic Starters Klima Ignition mechanism
Parachute Klima Rocket recovery
Nose Cone 3D Printed Body construction
Engine Mount + Fins 3D Printed Body construction

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OnShape 3D CAD Files and Assemblies

##Firmware

(Coming Soon!)

nrf52-rocket's People

Contributors

tonywu-nordicsemi avatar nanoengineer avatar

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