Belt-Driven Open Source Circuit Mill Using Low-Cost 3-D Printer Components

Dimensional Error in Rapid Prototyping with Open Source Software and Low-cost 3D-printer

Rapid prototyping models (RPMs) had been extensively used in craniofacial and maxillofacial surgery, especially in areas such as orthognathic surgery, posttraumatic or oncological reconstructions, and implantology. Economic limitations are higher in developing countries such as Mexico, where resources dedicated to health care are limited, therefore limiting the use of RPM to few selected center...

Fume emissions from a low-cost 3-D printer with various filaments.

3-D printing is an additive manufacturing process involving the injection of melted thermoplastic polymers, which are then laid down in layers to achieve a pre-designed shape. The heated deposition process raises concerns of potential aerosol and volatile organic compounds (VOC) emission and exposure. The decreasing cost of desktop 3-D printers has made the use of 3-D printers more acceptable i...

Onsite Data Acquisition Using Low Cost Open Source Microcontroller

Building Reconfigurable Systems Using Open Source Components

The complexity of reconfigurable systems is in great part the complexity of the hardware-software environment where they are integrated. Many different reconfigurable architectures and respective development tools have been proposed in the literature, but few reconfigurable computing startups have succeeded at creating sustainable business models. The extraordinary infrastructure needed to oper...

Power factor correction circuit for low-cost electronic ballast using current-source type

Introduction. With the adoption of standards such as IEC555-2, there is a need to develop electronic ballasts for fluorescent lamps which can perform line current harmonic reduction and high input power factor correction (PFC). Among various filtering techniques, the active power factor corrector with a tioost converter has, been proven to be effective [l 31. The boost-type PFC circuit is one o...