Launch code system for model rockets

Qwiic System
1

Hello, I have some experience with Arduino and wanted to try the QWIIC system for a new project. My main question about is about items needed for a simple “if > then” program.

System procedure:

  1. turn on

  2. enter code via numeric keypad

  3. press launch button

  4. rocket launches

The launch button will do nothing until the correct code is entered. The button will need to connect a circuit to the rocket that sends 1.5v

My main question:

Will the QWIIC Redboard, QWIIC keypad, and switches/buttons be able to handle this load? Or will I need to add a QWIIC Relay and separate power source to send the 1.5v to the rocket?

Any help is greatly appreciated, I don’t need anyone to write my code or anything, just making sure I have the right parts

thanks!

2

Hi Matthew.

You would need a Qwiic Relay and an external power source for the ignitor on your rocket. The RedBoard alone can’t supply the current needed to fire the ignitor.

It’s been a while since I played with model rockets, but I remember it taking 3 volts to fire ignitors. (Maybe that’s changed?) Just use your AA battery(s) as the power source for the ignitor and the Quick Relay will be the switch that connects the batteries to the ignitor. Everything else is just connecting the parts together and writing your code. :slight_smile:

3

Thanks! this is just what I needed.