How to send data from Accelerometer to OpenLog using Arduino UNO

Projects General Guidance
1

Hello Forum :slight_smile:

Me and my friends are building a waterrocket. We want to get the acceleration. But we quickly ran into problems.

Products:
*Triple Axis Accelerometer Breakout MMA7361
*OpenLog from Sparkfun
*Arduino UNO

We can't get the data from the accelerometer to the OpenLog. We need to programing something and also connect the accelerometer and the OpenLog to the Arduino.We have no idea of how to programming so we can get the data from the accelerometer to the OpenLog.

Please leave a comment if you can help us :slight_smile:

Thanks :slight_smile:

2

We have no idea of how to programming

Then this seems likely a project doomed to failure.

Each of the devices that you listed come with sample code and instructions. Have you run the accelerometer code? Are you seeing any data?

Have you run the openLog example? Is it doing anything?

Until you can answer yes to both questions, and post both codes, we can't help you integrate them.

3

Hey PaulS :slight_smile:

Thank you for your reply.

I surely not have been to clear. I have programming computer programs and games but not an arduino program. So that's I why I ask the question.
These devise didn’t come with any sample code and instructions.
No I have not run the OpenLog example because there was no example with the device. But I found an example on the products home page:

But thank you for your reply :slight_smile:

4

These devise didn’t come with any sample code and instructions.

Have you looked in the Playground?

(Is 6g FSD going to be sufficient? Some of those rockets go off pretty violently)

5

I'm envisaging something like a bottle rocket and it seems to me that a UNO plus battery are pretty bulky and heavy to be sending up on one of those. There are lots of smaller and lighter alternatives. Do you have a handle on the quantity of data you need to capture? I wonder whether you couldn't do the first pass analysis in real time in RAM and store the results in EEPROM and then upload via USB on demand. That would save using the external acquisition card, which here is basically just giving you SD storage since your sensor doesn't provide a serial output stream.