Showing posts with label Open-Hardware. Show all posts
Showing posts with label Open-Hardware. Show all posts

Monday, April 04, 2016

Open Hardware Design - BitScope

BitScopes are USB or Ethernet connected PC Based Mixed Signal Oscilloscopes. This means they capture and display one, two or four analog signals and eight logic or timing signals, simultaneously. Any BitScope can be used as a Digital Storage Oscilloscope, Logic State Analyzer, Spectrum Analyzer or Data Recorder.

Open Hardware Design - BitScope

This is a Open Schematics Design of the Early Bitscopes. This is good for learning about Scopes and Logic Analyzer. The Current Bitscopes are evolved versions are not Open Designs but are similar to this.

Open Hardware Design - BitScope

Students should see the Input Stages and also the Interface circuits.  BitScope Designs

The problem these days is that the students are learning embedded systems and programming language. Their Component and Product Hardware learning is weak, this can only be acquired by working in companies and R&D institutions. The only other alternative is to be a Hobby DIY Enthusiast and start building things at Home or Hobby Community Gatherings.

I would suggest …build a part of this and study. Then make Something on your own.

Open Hardware or Designs

As an Electronics design engineer or group sees it, some may include gnu type freedom, it could be just open-source. It would also be like a creative commons type design. Then it would even be just like  .....

"I have given you the schematics, pcb and software you can build, improve and learn from it"

Do not claim them as your own, give the credit its due. Respect the creator and designer.

The commercial products that evolved from the above designs.  

USB BitScope 310 - PC Oscilloscope

BS310U is a robust general purpose USB Mixed Signal Scope and Data Acquisition device. BS310U is backward compatible with BS300U which it replaces.

It has 4 times as much capture buffer, a software switchable x10 and x50 analog input multiplier and AC/DC coupling, switchable 50 ohm termination, a double speed built-in USB host interface all in a physical package about 2/3 the size and weight of BS300U.

Tuesday, March 01, 2016

Open Hardware and Product Designs

Product and Circuit Design Pages with Complete Projects accompanied by Circuits and Code.
Electronic Product Design

Open Hardware and Product Designs

Open Hardware Design many not be like Free Software. Free Hardware Designs existed even before Computers, Software or even free software came into being.

Radio Electronics carried one of the first free computer designs. You copy the circuit and build it. Like Woodwork Designs and plans in Popular Mechanics.

This is the way an Electronics design engineer or group see it, some may include gnu type freedom, it could be just open-source. It would also be like a creative commons type design. Then it would even be just like .....

Open Hardware and Product Designs

The Woodwork License

"I have given you the schematics, pcb and software you can build, improve and learn from it"

Open Hardware or Designs - Give Credits and Thanks

Do not claim them as your own, give the creator his due credit. Respect the rights of the creator and designer.

Some of the Designs are Application Notes, Evaluation Boards with Open Hardware. These may not be Open Source and some may be Copyright in design terms, still they are open designs.

The Electronic Design Difference

A free electronic design, like one that comes with a semiconductor application note or single board computer kit is not necessarily like open source but are still open designs.

Some Open Designs and Open Hardware are not Like FOSS or GNU but limited use and application. Still the Schematics, PCB and Firmware are Free to use, apply and learn.

Wednesday, November 18, 2015

OpenCores design and publish core designs

"Our main objective is to design and publish core designs under a license for hardware modelled on the Lesser General Public License (LGPL) for software. We are committed to the ideal of freely available, freely usable and re-usable open source hardware. OpenCores.org"

OpenCores design and publish core designs

Subsidiary objectives
  • Develop standards for open source cores and platforms
  • Create tools and methods for development of open source cores and platforms
  • Develop open source cores and platforms
  • Provide documentation for these cores and platforms
These tools and methods should allow large, widespread, even international, teams to develop hardware in an open way.

UART to from fiber optic - OpenCores

UART to / from fiber optic

This core is well tested. They is two versions: -Fixed baudrate (0 to 2.5Mbit/s) - a full set of 2 transmitter and 2 receiver fit in a single XC9572XL CPLD -variable baudrate 50Mhz/n*p where n between 20 to 100 fiber optic baudrate and p>=1 baudrate divider.

Other Projects
  • Ethernet MAC 10/100 Mbps
  • USB 1.1 Host and Function IP core
  • OpenRISC 1000
  • CAN Protocol Controller
  • I2S Interface
  • SPDIF Interface

Saturday, August 17, 2013

Learn about Solid State Relays - SSR

Electromagnetic Relays - 

NO - Normally Open - when the relay is not energized or activated, this terminal is open-circuit.

NC - Normally Closed - when the relay is not energized or activated, this terminal is closed circuit.

COM - The Common Center Terminal in relays. This is the center terminal that closes circuit with NC-NO.

The terminals are potential free and floating and are insulated from the control signals or coil windings by many kilo volts. Many provide visible isolation. These terms apply to SSR or Big Contacters too.
    Solid State Relays

    Solid State Relays - SSR

    Solid State Relays - SSR

    They are called SSR as there are made of semiconductors and have no moving parts to wear out. They do generate heat depending on load and switching. Thyristors are used in most as they are rugged, mosfets and IGBT may also be used for various applications.

    In this section you will find SSR designs and PCB layouts which you can study. These were made and sold by me years ago. So the PCB layouts have gone thru some revisions and they worked quite well.

    Applications -

    Many machines and equipment use some SSRs in their products which may need replacement. So the SSR is not only sold to OEMs but also to Service-Maintenance Market. These are also modified as Output Modules for digital outputs coming from embedded systems or Computers.

    Thursday, November 03, 2011

    Open Source Hardware - OSHW Draft Definition

    OSHW Draft Definition 0.3 is based on the Open Source Definition for Open Source Software and draft OSHW definition 0.2, further incorporating ideas from the TAPR Open Hardware License.

    Open Source Hardware - OSHW Draft Definition

    Open Source Hardware (OSHW) is a term for tangible artifacts - machines, devices, or other physical things - whose design has been released to the public in such a way that anyone can make, modify, distribute, and use those things.

    Open Source Hardware - OSHW Draft Definition

    Open source hardware is hardware whose design is made publicly available so that anyone can study, modify, distribute, make, and sell the design or hardware based on that design. The hardware's source, the design from which it is made, is available in the preferred format for making modifications to it. Ideally, open source hardware uses readily-available components and materials, standard processes, open infrastructure, unrestricted content, and open-source design tools to maximize the ability of individuals to make and use hardware.

    Adapteva’s Andreas Olofsson at OHS.

    Adapteva - Andreas Olofsson at OHS

    Making parallel computing easy to use has been described as “a problem as hard as any that computer science has faced”. With such big challenges ahead, we need to make sure that every programmer has access to cheap and open parallel hardware and development tools.

    Open source hardware gives people the freedom to control their technology while sharing knowledge and encouraging commerce through the open exchange of designs.

    Open Source Hardware

    Open Source Hardware Association
    P.O. Box 4743 Boulder, CO 80306

    Wednesday, October 15, 2008

    OpenEEG hardware - Amplifiers

    OpenEEG hardware - Amplifiers

    OpenEEG hardware - Amplifiers

    Design documentation

    Amplifier schematic [55kb] (aka analogue board; contains two amplifiers) and digital board schematic [48kb] as images.

    Note -

    I found the amplifier designs extremely good as a learning material. Medical instruments after development should undergo a approval process and have high product safety requirements. So above circuits to be used for study only, not for practical applications. When integrating, Medical professionals have to beta test it and after approval used for further tests.

    A simulated electrical noise signal source for experimentation is good enough for Degree Projects.

    - ananth

    Wednesday, April 16, 2008

    Open Circuits - Open Source Electronics

    Open Circuits is a wiki for sharing open source electronics knowledge, schematics, board layouts, ports and parts libraries. This include open hardware Music Players, atomic microscopes, PC, PDA and mobile phones, and batteries. Please help us to build this resource by submitting your component descriptions, projects, techniques, and PCB footprints.

    Open Circuits - Open Source Electronics

    Some Projects that look Interesting are

    • Multi-purpose Embedded System
    • dsPIC33 Development Board
    • ADuC832 Development Board
    • N8VEM Home Brew Computing Project

    The Open Source Movement, typically covers Open Hardware, Open Firmware, and Open Software. The Open Firmware movement provides firmware which you may also know as soft-IP or FPGA coding see Open Cores for more details.

    Excellent examples of Open Hardware projects range from projects at OpenCircuits to Tiny Embedded Ethernet Devices and Advanced & Intelligent Camera Designs which provide solid-state camera and FPGA assisted hardware designs. A solid overview of projects can also be found at Open Innovation Projects.