all about wiring diagram

Friday, September 26, 2014

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]

USB Function Generator Based on AD9833

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.

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]

Simple Bright Idea USB Lightbulb

Most of the time, in a cartoon or in a movie, whenever the character experiences an “Eureka!” moment, a light bulb would just appear on the head. Well, just in case your boss thinks that you are the dimmest bulb in the office, prove him or her wrong by picking up the £10.99 Bright Idea USB Lightbulb.

Yes sir, I think you do know just which direction I am heading with this – it is the perfect desk accessory which lets the world around you know just how many brilliant thoughts you would have come up with throughout the eight hours at the desk!

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.

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

Lock Down USB Ports via a PIC Based Smart Card Reader

Friday, September 19, 2014

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

Upgrade Your USB Hub

Thursday, April 11, 2013

Problems can arise with USB hubs that are powered from a PC when gadgets plugged into them draw too much current. This is often the case with devices fitted with USB cables that are too long or too thin, causing voltage drop. There’s no need to scrap your old USB hub, however, if you upgrade it using this little circuit and an external power supply. Just cut the 5-V power wire of the USB cable inside the hub and solder a diode (D1) in the pass-through direction. Now connect the 5 V wire from the external power supply to the cathode of this diode. D1 prevents any current from the power supply from flowing back into the PC.

Source by : Streampowers

all about wiring diagram

Simple USB Relay – I O Modules

USB Function Generator Based on AD9833

Simple Bright Idea USB Lightbulb

Lock Down USB Ports via a PIC Based Smart Card Reader

Upgrade Your USB Hub

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