gocivici

Great project, nice work! Maybe you can add different colored markers to it in the future?

Sorry for the late reply! you can download the library from here: https://github.com/chrisfryer78/ArduinoRTClibraryThanks for pointing that out!

Woah! this is the most creative use of a fidget spinner I've seen so far. It actually solves a problem. Bravo!It would be awesome if the hands holding the tubes had hinges on it, this way the tubes would rise while spinning like on an actual centrifuge!

Wow that's impressive, especially the auto-calibration feature and calculations. Nice project!

Wow that's impressive.

Currently, the setup tracks the sky 1 degree at a time. So a long-term exposure can result in small star trails. However, you can edit the code to track in real time. Erase this part:if( floor(LST_degrees)==LST_degrees ){...(don't erase the inside)}(I do not recomment using a camera with this setup. Because of the accuracy of the motors and gear ratios)

Thanks for the feedback!You are right, I did not use the actual reduction of the steppers, I used the pre-defined accelsteper library. However it did not effect the overall accuracy of the setup. But on v2 I will consider the real reduction of the steppers. Thank you for pointing that out!

The library for the gyro I used (MPU6050) , uses a specific delay time in the loop to calculate degrees. delay((timeStep*1000) - (millis() - timer));When I tried using accelstepper library and the gyro with an Arduino uno. There was some delay while the motors were running.Thus the gyro values were a few degrees off. That is why I separated the motor control, from the gyro reading. A better gyro could solve this problem, for example, https://www.adafruit.com/product/1032does not need a special delay time to calculate the values.

I'm really sorry I put the wrong link for t he mpu6050 library. Here you go this is the library I was working with:https://drive.google.com/folderview?id=0B1p6T9dV6t...

I don't get any errors with the code. Are you sure you installed the right library for mpu6050?https://github.com/jrowberg/i2cdevlib/tree/master/...

Hey, thank you!-I will try to edit that ring so I can attach a 5g servo on it and control the laser,-You are totally right. A belt driven system would be more accurate. I will use a belt driven system in the future.-For the RTC I had a DS3231 it was an Extremely Accurate I²C-Integrated RTC. But while testing the setup I found out that the MPU6050 and DS3231 were using the same I²C address. That's why I used the ds1302 instead. Next time I'll try the DS1307.-28BYJ-48 steppers are very cheap but they struggle under pressure. The NEMA steppers are a really good recommendation I'll consider it thank you!Thanks for the recommendations, these will increase the bill of materials, but also the precision of the setup. Also thanks a lot for the links.Adding a buzzer is a really good ide...

Hey, thank you!-I will try to edit that ring so I can attach a 5g servo on it and control the laser,-You are totally right. A belt driven system would be more accurate. I will use a belt driven system in the future.-For the RTC I had a DS3231 it was an Extremely Accurate I²C-Integrated RTC. But while testing the setup I found out that the MPU6050 and DS3231 were using the same I²C address. That's why I used the ds1302 instead. Next time I'll try the DS1307.-28BYJ-48 steppers are very cheap but they struggle under pressure. The NEMA steppers are a really good recommendation I'll consider it thank you!Thanks for the recommendations, these will increase the bill of materials, but also the precision of the setup. Also thanks a lot for the links.Adding a buzzer is a really good idea, I've never thought about that. The buzzer could make 2 short beeps and a long beep,and then turn the laser on. I'll add this to the project. thanks a lot!I will start to build the V2 ASAP!Thanks for the feedback. It means a lot to me!

Nice job!I have a question, what is the temperature measurement inside the chamber?

I totally forgot to add the source for the laser. Thank you for pointing that out, I updated the parts list.I'm using a 200mW green laser pointer but I don't recommend using that. Because it gets hot too fast. Here is a chart that shows what mW of laser pointers are visible in the night-sky. I recommend a 50mW laser pointer.http://lazerer.com/what-can-certain-mw-of-laser-do

Thanks!Not yet. I'm trying to arrange a day with a clear night-sky and away from city lights so I can capture a time-lapse video. This way you will be able to see it in action!

Thank you for the feedback and correction! I'll edit that part asap!