Archive for the ‘3D printing’ Category

PLD (Part 5)

Part 1, 2, 3, 4, 5, 6 HL2 PLD may be used for safety applications too. In this configuration, the PLD is able to detect movements up to 7 m away within and almost 90° view angle. It features a PIR (Passive Infra Red) sensor from Panasonic. This sensors is available in different sizes depending on the required range; the enclosures […]

3D Printing (Part 12)

Part 1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12 3D printing can be tiring for the nerves… For a week or so, I was enable to print full size parts without enduring severe problems such as splitting layers, irregular faces and even gaps. Here is an illustration of the prints before the fix (on top) and after the fix. The first layers […]

3D prints: USB housing

I had this cheap USB stick that I had to take apart in order to rework the connector soldering. Once the soldering works achieved, I had to think about a quick and dirty enclosure which resulted in this: Two – almost – symmetrical parts. The top one has a bump and a small hole aligned […]

3D prints: Coil

I have multiple projects in mind starting from a metal detector up to a NMR in field earth spectrometer which require one or more coils in various shapes and sizes. Here is the presentation of a double coil, 100 mm diameter, 5 mm thickness. Here is a zoom on the back side of the coil […]

3D Printing (Part 11)

Part 1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12 3D printing is awesome. I am even wondering how I could live without it. I mean, in my professional, domestic and makers life. Before 3D print, I would have used wood, metallic wires, sheets of PVC or even cardboard to build parts in the quick and dirty mode. Just before 3D printing, I was also […]

DC-motors (Part 1)

Part 1, 2, 3 DC-motors are every where in many form factors, many performances and configurations. The aim of this series of posts is not to cover all aspects of DC-motors as there are so many publications available, most of them being of excellent quality. Firstly, I will concentrate on the most common brushed DC-motors . Next […]

Last minute Xmas present… a storage box!

Time for tidying up my bench ! As electronic components are getting smaller and smaller, the need for suitable storage boxes emerges. Here is the description of an original storage cupboard that I designed for SMDs as well as for very small mechanical parts such as watches spare parts. Here is the picture captured from FreeCad that I […]

Ultrasonic scanner (Part 1)

Part 1, 2 And now, something completely different : here is arduinoos’s ultrasonic scanner ! This ultrasonic scanner results from the combination of two main components: an ultrasonic sensor and a stepper motor. Both have already been covered in this blog (here and there). Both component form the head of the scanner which is screwed on top […]

Amazing 3D printing

As a big fan of 3D printing, I had a lot of fun watching this video In the next future, this is what we will hear from NASA records: “Hello Houston, we have a problem” “How can we help ?” “Could you email us a cable clip so that we can tidy up this harness” […]

Stepper Motors (Part 6)

Part 1, 2, 3, 4, 5, 6, 7, 8, 9 This post is about an other driver module which is very popular in the world of robots and 3D printers. These modules features the DRV8825 Stepper Motor Controller integrated circuit made by Texas Instrument (Datasheet available from >here<). Although many clones exist, it looks like Pololu was at the origin […]