An interesting project that uses an Arduino to sort M&Ms by color. One thing unique about this approach is that he uses iPhone for color recognition which signals Arduino via BT to open specific relays for each color. The result is rather satisfying sorter that does not disappoint. Quite ingenious and definitely inspiring.
More details after the jump High speed M&M sorting machine.
The video below is an excellent introduction to all that the little editor offers.
More info after the jump –> Brackets – A modern, open source code editor that understands web design.
Frequently you need to tweak files and copy folders on your Raspberry Pi. For example here is a tweak for memory. Headless Raspberry Pi RAM Memory Tweak •
Normally you need to go into command line to edit these but of you are on Windows there is a cool utility called WinSCP which allows you to connect to RPi and edit these files.
Editing and creating files can be easy using WinSCP .
Set a connection with your RPi with “SCP” as and enter the login/password for your RPi.
WinSCP is an open source free SFTP client, FTP client, WebDAV client and SCP client for Windows. Its main function is file transfer between a local and a remote computer. Beyond this, WinSCP offers scripting and basic file manager functionality.
Go here to download WinSCP :: Download
For Mac OSX unfortunately there is no port but there are reports that it runs very well on Wine. The other option is to run under a Windows VM.
In anticipation of the kit, there are other components that need to be locally sourced.
1. Power Supply : Any ATX power supply (at least 500W) or Xbox power supply 203W version. Both need some tinkering to make it workable. I’m leaning towards ATX for future expandability (if additional hotends or fans need to be added).
Reading through advice on Reprap forums and Power Supply – RepRapWiki, decided on Amazon.com: Antec BP550 Plus 550W ATX12V V2.3 Modular Power Supply: Electronics
1. Digital Calipers : iGaging IP54 Electronic Digital Caliper
2. Dial gauge : AccuRemote 0-1″/0.0005″ DIGITAL ELECTRONIC INDICATOR GAGE GAUGE
1. White Lithium Grease : Permatex 80345 White Lithium Grease
2. Filament : 3MM (looking for good sources) and reading up reviews
3. Blue Painters Tape : Normal 3M painters tape
4. Rubbing alcohol : Already have it
5. Acetone : This is to clean and degrease the metal components in the kit( Other users building recommended cleaning first). Acetone is quick drying and does not leave any residue. Thinking of using Naptha instead since I already have it.
Having ordered Nophead’s kit, I am looking into user experiences in building from the kit. Here are few blogs that document the experiences.
Sam Kear’s Build Log – Building a Mendel90 RepRap 3D Printer Using Nophead's Kit.
Bryan Seger’s Blog – Mendel90 Build Blog
Marcos Scriven’s Mendel90 Build – Building the Mendel90
Robert Wozniak’s Mendel90 build – Mendel90 3D Printer: Mendel90 Kit Build
Last but not the least : Build Manual from RepRapWiki Mendel90 Build Manual – RepRapWiki
Finally decided to go with Nopheads Mendel90 kit. Placed an order for the kit.
Purchase details here [UK + INTL] Mendel90 complete kits for sale: updated.
Here is how the printer looks.
After poring through endless forum posts and reviewing advice sought by beginners here’s a list if features I have shortlisted for my search.
1. Open-sourced : Community support, based with good availability of spares and parts.
2. Support : Good online support and uptake with community. This would eliminate most of the cheap kits and Chinese clones
3. Documentation : Since this is going to be my first foray, should be idiot proof.
4. Stability : Should have sturdy and stable frame, this should eliminate frequent calibrations.
5. Ease of Assembly : all inclusive kit, with good quality sourced components.
6. Print Resolution : At-least 100 mm but would prefer less than 100 m, given than going lower would generally mean slower speed.
7. Extruders/Hot end: At-least 0.4 mm, possibly to expand to dual extruders at a later stage
8. Expandability – Community support for addons and improvements
9. Build Volume : Heated bed, Preferably 8x8x8 with option to expand at a later stage
10. Materials : PLA and ABS
11. Printer type : Cartesian
12. Price Range – $500-900
Here’s a comprehensive guide on 3D Printers and state of the industry. Based on user input and survey involving those who have had actual hands-on experience, the guide breaks it down by printer type and whether it is suitable for your temperament (tinkerer, hacker or you want plug n play). This should serve as a easy reference for those who are looking to get into this as a hobby or for more serious work. The 2015 3D Printer Guide | 3D Hubs.