Cyrozap's Tech Projects

Computers. Circuits. Code.

Stupid Circuit Prototype...

Ok, I've built this thing TWICE on two different boards now and I still haven't managed to get it to work with the programmer!


If you want to help me, see the post I made on the MakerBot Google Group.

Cool Stuff

The parts for the Unicorn circuit board arrived! The circuit boards themselves sill aren't here, of course (cheap shipping from China is cheap and slow). Anyway, I went through the parts I received and, lo and behold, I got one wrong. Thankfully, it was only the switch—I had ordered a surface-mount version instead of a through-hole version. The good news is I can still use the switch. I have corrected the part number and price in the part list spreadsheet.

On a slightly related subject, I finally assembled the Magnetic Rotary Encoder board!

Magnetic Rotary Encoder

It's pretty cool. The surface-mount soldering, while not impossible, is still a pain in the butt. Also, getting the rosin flux off the board was fairly difficult, too. I feel like Hackaday did a how-to for using flux, but I can't find the post right now. If any of you has a good method or a link to a good method of removing rosin flux, leave a comment.

Unicorn Pen Plotter Circuit Component Cost

Ok, so I'm a few days late with ordering the parts. No big deal, right? Anyway, I got them ordered today and it ended up costing around $16 (including shipping, from Digi-key). That parts cost reflects a full set of RoHS-compliant and lead-free parts, so it is possible to get the parts cheaper. Tentative BOM after the break.

Unicorn Pen Plotter Dedicated Controller Board

I just ordered 10 of the Minimalist Unicorn Controller Boards that I designed. Total cost was around $34 from SeeedStudio, so that's about $3.40 per board. If you want, I can send you one for the cost of the board + shipping. I really only want one for my Unicorn (still haven't used it) so I kinda want to offset that cost a bit. I'll be ordering the components tomorrow so I'll let you know what the electronic bits cost then. Sorry about this post's grammar—it's late but I really wanted to get this out tonight.

Update: This is essentially just the extruder controller with all the unnecessary bits removed. The benefits of this board are that it is (theoretically) cheaper than the EC board and it's smaller than the EC board but it still has the plug-and-play RS485+Power port.

Update 2: Remember, this is just the PCB I'm selling, nothing else—no components. You all knew that, though. Right?

What an excellent day!

Apparently, I won a Unicorn. The pen plotter, that is. Of course, I couldn't stop thinking of...


In other news, I received my Crosshair II Formula motherboard today (I RMA'd my M2N32-SLI Deluxe at the beginning of November, right before its 3 year warranty ran out; of course, they weren't able to repair it nor were they able to replace it, so they gave me a slightly better model). If you want to know why the Crosshair II Formula is so nice, Google it. I really like that I'm able to overclock my AMD Athlon 64 X2 4200+ from 2.21 GHz to 2.54 GHz, raising my Windows Experience index (in the CPU category) from 4.9 to a 5.8.

Also, I got Eyefinity working on my two 1080p 23" monitors.

Time to go play Team Fortress 2!