08 Jun 2015
My 65W DIY solar panel testing
![DIY solar panel testing 65w](http://d3pjxncsu26pvf.cloudfront.net/wp-content/uploads/2015/06/DIY-solar-panel-testing-65w-window-frame-150x150.jpg)
Maybe you have also wondered how much power do solar panels generate on a cloudy day compared to the clear sky? Other than the location on earth this is also a huge factor in overall performance. I had the same questions myself. So I tested my solar panel. I included my location on earth and time
05 Jun 2015
Accidentally blew a fuse of Arduino CNC controller by reverse polarity
Today I was messing around with my CNC shield (version 3.00) and GRBL. But somehow I managed to accidentally reverse the polarity of my power cables. Until today I had no problem keeping that in mind. The fuse was blown and like it’s not enough yet- drives also. DRV8825 drives have no reverse polarity protection-
22 May 2015
Arduino CNC shield version 3.0 with GRBL v0.9
![Arduino CNC shield version v3.0](http://d3pjxncsu26pvf.cloudfront.net/wp-content/uploads/2015/05/arduino-cnc-shield-version-v3.0-top-view-150x150.jpg)
My experience with arduino cnc shield was bit frustrating at start. This article is about version v3.0 CNC shield. I didn't know anything about this shield, GRBL software and how gcode is sent to CNC machine. So I was pretty unsure about everything I was doing.
01 May 2015
CMTP02-5A solar controller photos and contents
![CMTP02-5A 5amper version front and case](http://d3pjxncsu26pvf.cloudfront.net/wp-content/uploads/2015/05/CMTP02-5A-5amper-version-top-view-150x150.jpg)
This is a small follow up post for my main post (go read that post also after this post) about CMTP02 type of solar charger controller. Turned out that 5 amper version has actually much different content (-5a after model name refers to a maximum of 5 amperes charging current). It’s not actually a surprise since it handles much
07 Mar 2015
DIY lightbox- My idea and building
![light box testing with one LED](http://d3pjxncsu26pvf.cloudfront.net/wp-content/uploads/2015/03/light-box-testing-whit-one-LED-150x150.jpg)
I finally finished my DIY lightbox. I had the frame already assembled a few months ago. That frame was built using aluminum DIY profile corners and threaded bars. I have written about it in a separate post. Nothing too fancy, but does the job. I’ll share some photos how I built it. Parts used in my DIY