Showing posts with label USB. Show all posts
Showing posts with label USB. Show all posts

Simple Bright Idea USB Lightbulb

11:09 AM | Labels:

Simple Bright Idea USB Lightbulb

Located right at the end of a sturdy and flexible arm, lies the Bright Idea USB Lightbulb which happens to be a fuss-free lamp, sans switches, where it will also not come with a lampshade nor any legs. No sir, it is up to that creative mind of yours to concentrate and deliberate over grand ideas.

Simple Bright Idea USB Lightbulb

ou will find it emit a soft and soothing blue light as long as it remains plugged into any USB port, where it will shine some reassuring illumination whenever you need to work late into the night. Not only that, it will glow in the dark even when it is not plugged in, how about that for innovation

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USB Function Generator Based on AD9833

11:37 PM | Labels:

One tool that I’ve been missing at my lab at home is function generator. They tend to be a bit expensive, so I haven’t bought one. I thought this might be a good opportunity to try and make one myself. I found a pretty common DDS (direct digital synthesis) chip, called AD9833. Then just strap a USB-enabled AVR micro there and maybe some analog electronics.


USB Function Generator Based on AD9833

 
This board doesn’t do any of the special analog magic to allow for variable amplitude or offset for the signal. The output is fixed to 0-4v. I’m planning to make another completely analog board for adjusting amplitude and offset. [Link]

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USB Sound Card

6:36 PM | Labels: ,

In this article I will discuss my own experiences about designing a USB sound card, which is the USBDAC. DAC is an acronym for Digital-to-Analog Converter because in a sound card, digital data representing the sound is converted into analog voltage that moves the speaker cone.

Designing a USB Sound Card

My device is loosely based on the PCM2706 reference design. I will not go through the tecnical details but instead concentrate on my own experiences in the design of the device. This is to keep people not familiar with electronics, as well as newcomers to electronics design, interested. You will see that one working product is the result of many failed prototypes. [Link]

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Simple USB Relay – I/O Modules

6:35 PM | Labels:

After the success of small modules USB – I / O converters – PUSBIO with MCP2200 circuit intended for development and small batch production, which we introduced in Article MCP2200 USB module and I / O , and recently introduced software for USB I / O modules , now the company introduces new modules Pandatron with relays and optocouplers. [Link]


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Operating Color Lights on USB

8:58 PM | Labels:

This project is a remake of an old discolights pod. Original 24V 5W bulbs are changed to 230V 40W with E14 thread. Original driver board has non-typical signal input. This driver is based on the FT245RL chip, a USB-LPT converter – so you can use it with PC applications such as discolitez. Low voltage part is supplied directly from the USB so there is no need to to use any transformer…

Operating Color Lights on USB
 
Device uses a MOC3041 optotriac and a BT136 triac in a standard application to drive bulbs. Note if you want to use stronger bulbs, like 100W or more, you need to use some little radiators to cool down the triacs. There are 4 channels, 3 are used for bulbs and 4th is used as an extra 230V output – in this case for a mini strobe. You can find 4 goldpins on board, these are a 4 extra output channels – so you can expand device to another optotriacs and triacs to use 4 more 230V devices. To your own safety, use a proper fuse, and remember that device works on a 230V potential. You can use it with 110V devices instead of 230V, no problem. [Link]

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Lock Down USB Ports via a PIC-Based Smart Card Reader

8:57 PM | Labels:

What i am making here is a USB lock with smartcard key. The idea is that a phonecard reader made with a PIC micro will be able to store a number of different phonecards into memory. Whenever one of these cards is inserted into the slot, it will activate a 4-ports USB On/Off switch. If the card is removed, the USB ports will be de-activated. [Link]

Lock Down USB Ports via a PIC-Based Smart Card Reader

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DCF77 to USB Converter

8:56 PM | Labels:

I like the handy DCF77 signal. In this project no clock should use it, instead the computers in my home network should be served by a precise time reference. Due to the fact most other interfaces are no longer available on modern computers, it uses the USB to forward the prepared DCF77 signal to the host. [Link]

DCF77 to USB Converter

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Testing A FT245RL Chip with Software

8:55 PM | Labels:

Chips FT245RL testing, checking for the program. It can set the output and input signals to the findings and submit. It is thus possible to enable or disable the 8 channels, for a 8-channel input. It all started a long time ago. Once, when I learned that the computer can be sent off signals that you can manage yourself, immediately began to take interest in the way they can do. It was somewhere in ~ 2002. After browsing the internet and found some examples of how the device can be connected to an LPT Port,.

Testing A FT245RL Chip with Software

Since that time almost all computers have an LPT port, it's all gone well. In the LPT port connected LEDs managed a program written by someone that has been written as to support in the MS-DOS. It certainly was not a pleasant appearance, ease of operation ... Was only possible to manage such a procedure, a combination of ... as was intended by its creator. Therefore, once thought myself why can not I create and manage the program as he wants. So began an interest in computer programming and bonding with their devices. [Link]

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AVR Stick – A Simple USB Data Logging Device

8:55 PM | Labels:

The AVR Stick is a simple data logging device that instantiates itself as an HID keyboard and reports the voltages, along with a ‘timestamp,’ from two pins on an ATtiny85. The device uses open source firmware availabe from Objective Development (http://www.obdev.at/vusb/) called V-USB to implement the USB 1.1 standard. The code that runs the application was based on the EasyLogger example application from Objective development. [Link]

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