Large 3D Printer

I was reminded by a few colleagues that I have not updated this blog in years now. I guess, I’ve just been too busy playing to blog.

When I had moved to the US (2014), I had backed a kickstarter project called Cobblebot. I’m not even going to link to it here as it was a really bad experience, however it did get me started with 3D printing. With the help of fellow backers on Google+, I was able to build a decent printer that provided me lots of fun. I had never built it for anything serious and most of the things I ended up printing were downloads from thingiverse. But, it was fun nevertheless:

In it’s final version it was able to print a size of 14″x14″x14″; though I never printed anything that large. I built and re-built it multiple times with new upgrades all the time; mainly using ideas from the Google+ community

The first print was a hollow cube:

But went on to print lots of great prints once I had the settings and upgrades done. Some examples include:

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One of the best upgrade I did was change the controller from RAMPS that came with the kit to a Cohesion3D ReMIX. It’s 32-bit, runs Smoothieware and makes the motions so smooth and results so amazing, I simply don’t know why everyone still uses the RAMPS controllers. I also wrote a blog post for 3DPrinterChat that describes how you can use the Smoothie compatible boards to easily replace your RAMPS controller. 

Smoothiefy Your Printer

Finally, the printer looked like this, before I disassembled it while moving from the US to UK:

Now, in  London, I’ve started to rebuild it and decided to supersize it:

Don’t ask why I did it; even I don’t know 🙂

LED Clock

One of my clocks stopped working – and it happened to be a clock my wife likes a lot. Went to the repair shop and the guy said that he didn’t have the spare parts and could not repair this. So – I thought – why not build an LED clock – I had tons of LEDs and an RTC module just waiting to be used.


Continue reading LED Clock

Standalone Temperature and Humidity Control v2

If you’ve reached here directly – please see:

http://dushyant.ahuja.ws/?p=740

I’ve modified the code to add the following:

  1. Used the OneButton library so that the setpoint can be increased by clicking button and decreased by long clicking the button
  2. Used the Timer library so that I don’t rely on delay – which was inaccurate
  3. Change the logic for temperature such that the heater gets switched on if the temperature goes below the setpoint. Makes more sense as you don’t need the heater to be on at the setpoint. Also, reduces chances of the heater malfunctioning by switching on and off all the time
  4. Used a similar logic for humidity – on when humidity is less than 50 and off when it is more than 60

Continue reading Standalone Temperature and Humidity Control v2