Google Eyes Bookmark
Here’s a cute google eyes bookmark we made for the kids. It’s a pretty quick print and would probably made a great 3d printer demo print. It was created entirely using OpenSCAD. You can find the STL here on thingiverse:…
Category Odds & Ends
Mounting a PCB Heatbed (MK1) onto a Reprap 3D Printer
To install the heated print bed for my reprap, I placed the PCB on top of the plywood top print plate (which is slightly larger than the PCB), clamped it in place, and then used the holes in the PCB…
Highly Configurable Wheel (One Wheel To Rule Them All)
I built a framework for robot wheels a while back using OpenSCAD and used it to create a few different wheel styles. I recently decided to combine them all into one massively configurable wheel model, and add a number of…
3D Printed T10 Lamp Shade
Here’s a 3D printed T10 lamp shade that I designed and printed last night. A few weeks ago while searching for LEDs, I noticed an ebay listing for very inexpensive 12V automotive lamps that combine nine bright white LEDs. I…
Sanguinololu 1.3a Soldering Notes
A couple of people have noticed this, so I thought I’d write it up. There’s nothing wrong — it’s just something to be aware of if you’re soldering up a Sanguinololu 1.3a PCB. If you look closely at the circuit…
Mouser Electronics Shipping Costs and Turn-Around Time
The shipping “estimator” at Mouser.com is a little vague, so I thought I’d post the results of a recent order. In general, you’re not going to know the shipping cost or the weight of your order until after it’s shipped.…
Repraps for Education
As an active member of the #reprap community on IRC, I’ve started to realize that there are many others that share the common interest of getting 3D printing technology into schools, and so we’ve started a Google group to facilitate…
My $300 Prusa Mendel Build
I’ve set out to build a Prusa Mendel for $300. So far I think I’m doing pretty well. The top part is what I’ve already picked up, and the bottom part is what I have yet to purchase — that’s…
McMaster-Carr Shipping Costs
It’s not easy to find concrete examples of shipping costs for McMaster-Carr online, and they don’t tell you what an order is going to cost to ship until after it’s already shipped — and that can be a little scary…
DIY 12-Channel Bidirectional Logic Level Shifter
Here’s a 12-channel bidirectional logic level shifter with a 3.3V power regulator that I designed so I could easily interface 5V circuits with cool 3.3V widgets like the ADXL345 accelerometer, the NRF24L01+ wireless transceiver, and the Nokia 5110 84×48 LCD. For the…