ATA (44) internal connector pinout

ATA (44) internal connector pinout

This connector is mostly used for 2.5 IDE HDD of notebooks and so on. Pins 1-40 are the same as the IDE/ATA 40 pin connector, but the spacing between pins is smaller and they are therefore electronically, but not physically compatible.


Note: Direction is Controller relative Devices (harddisks).
Special Note: Pin 1 is closes to the 4-pin selector. Pin 20 may be missing, this is normal, and allows for cable polarity.
On some motherboards, pin 1 is usually indicated by a Square or Triangle, either on the solder pad, above label, or silkscreen markings.



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A 2.4GHz High-Power Audio-Video Link

Forget about flea power A-V links. This one has an output of 0.5W for a range of about 200 meters using simple "whip" antennas.


You will have seen adverts for devices of this type - they've become quite popular in recent years.

Operating on a frequency of 2.4GHz (that's 2,400,000,000Hz for the uninitiated!), most have about 10mW or so output and while they work well over a short range, the range is limited by the low power.

This design has much higher power - around 0.5W output, in fact. So as you might expect, the range is very significantly extended. With the simple coax cable "whip" antennas shown here, the range is reliably 200m or more. But if you use a simple dipole antenna, you could expect much more range - maybe 10 times or more.

Perhaps a word or two about how and why this is possible is in order. It is sometimes difficult for people to understand how changing antennas can give longer range.

The simplest analogy I can think of is using your own voice. You can talk at a certain level and you'll be heard up to a certain range. You can shout, and of course you'll be heard by people further away. You're increasing the power of your voice.

Or you could cup your hands around your mouth and project your voice in a certain direction. Those off to the side won't hear as much (if at all) but those in the direction you're projecting will hear much more.

That's the equivalent of using a directional antenna. You're concentrating power in one particular direction at the expense of other (unwanted) directions.

If you replaced your hands with a long length of pipe, those to the side would hear little, if anything. But those at the other end of the pipe, even over a very much longer distance, could possibly hear you.

That's the equivalent of using a highly directional antenna. Very little energy is radiated in any direction except the one you want.

OK, now that we know how to get longer range by increasing power and/or using directional antennas, let's get back to the Audio/Video Link.

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45-Second Voice Recorder Module

45 second message recording without tapes or discs. Use it for phone messages, a voice memo pad, you name it!

When you need to record voice messages with the highest possible reliability, there’s no substitute for a solid-state voice recorder chip. There are no moving parts at all, so there are no tapes or belts to break, no heads to clog up with gunk, no motors to burn out and no bearings to jam. Instead, there’s just a memory chip to store and replay the message electronically, any number of times.

Because it’s solid-state, the message(s) can be played back instantly – there’s no tape to rewind. Small wonder that most telephone answering machines changed over to this kind of recording years ago.

We’ve described solid-state voice recorder projects in the past and they’ve been very popular. However, the special chips they used eventually became hard to get and so these projects eventually fell by the wayside.

This situation recently changed for the better again, when Jaycar Electronics managed to find a good source for a new voice recorder IC, the HK828. This made it possible for us to develop a new recorder design, incorporating not only the features that were popular in the earlier designs but a few more based on the requests we’ve received from readers over the years.

The new HK828 chip can store single or multiple messages with a total length of between 40 and 60 seconds, depending on the sampling rate and the voice quality you want. In our new recorder module, this chip is teamed up with a low-cost electret microphone to allow easy message recording, plus an LM386 power amplifier IC which allows the recorded messages to be played back through a small speaker.

In addition, we’ve made provision for the module to be hooked up to a 600Ω/600Ω line isolation transformer for coupling into another system; eg, an alarm system or a private phone line. There’s also a simple interface so that the module’s functions can be controlled via a PC or microcontroller.

The new recorder module runs from 6V DC and draws very little current, so it’s quite suitable for operating from either a battery (eg, four AA penlight cells) or from a regulated 6V plugpack supply.

By the way, since the HK828 voice recorder chip is only available from Jaycar Electronics in Australia and New Zealand, kits for the new recorder will only be available from Jaycar and its dealers

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12V Flourescent Lamp Inverter

Drive a standard 36/40W fluoro tube to fll brightness from a 12V DC. Ideal for camping, a trouble light or even emergency home lighting.

For these reasons, fluorescent lighting is the natural choice in commercial and retail buildings, workshops and factories. For battery-powered lighting, fluorescent lights are also the first choice because of their high efficiency.

The main drawback with running fluorescent lights from battery power is that an inverter is required to drive the tubes. Inverter efficiency then becomes the major issue.

There are many commercial 12V-operated fluorescent lamps available which use 15W and 20W tubes. However, it is rare to see one which drives them to full brilliance. For example, a typical commercial dual 20W fluorescent lamp operating from 12V draws 980mA or 11.8W. Ignoring losses in the fluorescent tube driver itself, it means that each tube is only supplied with 5.9W of power which is considerably less than their 20W rating. So while the lamps do use 20W tubes, the light output is well below par.

Warning: This circuit generates in excess of 300V DC which could be lethal. Construction should only be attempted by those experimenced with mains-level voltages and safety procedures.

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10-Channel IR Remote Control Receiver

Where would we be without our infrared remote controls? Stuck back in the dinosaur era, that's where. IR remote controls are now built into lots of appliances, ranging from TV sets and VCRs to audio equipment, robots and lights.
This relatively simple design makes it easy for you to add infrared remote control to your latest project or to existing equipment. What's more, it can control up to 10 different functions, which should be more than enough for most applications (usually, you'll only need one or two channels). Each output uses an open-collector transistor and this can be used to switch a relay or even to directly switch other 12V equipment.
The outputs can also be used to drive LEDs via current limiting resistors or to drive optocouplers (eg, to provide isolation from high-voltage circuitry). Heavy current items such as motors and light bulbs will have to be driven by relays. We've made the job easy for you by including diagrams that show all the various options - see Figs.5(a)-5(d).

MAIN FEATURES
Uses a commercial handheld IR remote
10 separate outputs
Outputs can be independently set for momentary or toggle operation
Acknowledge LED
LED indicator on each channel
Transistor output for relay connection
Operates on two different remote codes
12V DC operation
Commercial remote

As already indicated, the 10-channel remote receiver is operated using a commercial handheld remote which can also be used to control your TV, VCR or satellite receiver. Using a commercial IR transmitter vastly simplifies the construction and you also get a professional looking controller as well.
Operation is simple - just press one of the 0-9 buttons on the transmitter to control the 0-9 outputs on the receiver. A momentary output stays on for as long as its transmitter button is held down, while a toggle output alternates between ON and OFF on each subsequent press of the button. An acknowledge LED flashes whenever an IR signal is being received, while 10 more LEDs are used to indicate the status of the outputs.
There, we told you it was simple to operate!
All the parts for the circuit are mounted on a small PC board and this can either be housed in a separate plastic box or built right into existing equipment. The operational range is up to about 12 metres.

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4-Minute Shower Timer

Gone are the days when we can afford to luxuriate under a hot shower for hours on end. Well, maybe the showers weren’t quite that long but most people are used to taking showers in the tens of minutes.
It’s easy to lose track of time in the shower. And it does feel nice.
That’s a luxury that’s no longer economically nor ecologically sustainable. First of all, we’re short of water. In most areas of Australia the powers-that-be keep telling us if we don’t be good boys and girls and cut our water usage then we are going to run out.

(Those same powers [read politicians] that keep blaming us wasteful consumers don’t mention that for the most part water shortages are their fault, because they haven’t invested the necessary dollars in water infrastructure while population has steadily increased for much of the last half century. But let’s not get into that argument. At least not right now . . .)
Second, we’re short of electric power. The power that goes to heat the water is also in very short supply. Load shedding (ie, blackouts!) is becoming more and more common as supply authorities attempt to cut peak loads. Those same powers-that-be keep telling us that if we don’t reduce our consumption of power, it’s going to get worse.
(Those same powers [read politicians] that keep blaming us wasteful consumers, etc etc etc . . .) Putting aside all the scare-mongering that’s going on in political circles (my spell checker wanted to change that to circuses, which would be perhaps more apt) it really does make sense for us, as consumers, to try to save both water and power – if only because that means less of our hard-earned dollars will end up in Government coffers.
One way to do both, of course, is to take shorter showers. How short?

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4 Digit Crystal-Controlled Timing Module

As already stated, the design features a 4-digit 7-segment LED display (with decimal points) plus an open-collector output. Depending on your application, this output can be used to operate a relay or sound a buzzer at the end of the timing period.
In addition, there are three inputs to the circuit: Reset, Start & Stop. The Reset input is a hardware reset to the microcontroller, while the Start & Stop input functions vary according to the firmware used.
All inputs are normally pulled high and may be pulled low by switches or relays, or by an open collector output (ie, when the transistor turns on).
Two on-board pushbutton switches are also connected across the Start & Stop inputs. These enable you to test the basic operation of the timer module without hooking up external hardware (apart from a power supply). Basically, they are there to help you get the unit "up and running".
To make the module easy to use, all the inputs and outputs are brought out to a single 10-way header pin. What's more, each input or output "pair" includes its own ground pin (see Fig.2).
Note that when using the output to switch a load, this load must be connected between the output pin on the PC board and a positive DC voltage. For example, to switch a 12V relay, connect the relay between the output pin and +12V.

Specifications :

Timing Range (Down Timer)-- 0-10,000 seconds; or 0-10,000 minutes;
or 0-10,000 hours
Timing Ranges (Photographic Timer)-- 60, 90, 120, 300, 600 & 900 seconds
Frequency Ranges (Frequency Meter)-- 0-10kHz & 10-40kHz (TTL logic)
Inputs-- Start, Stop and Reset (active low)
Output-- open collector NPN transistor, 100mA @ 30V
Power Supply-- 9-12V DC @ 50mA
Display-- 4-digit 7-segment LED with decimal point
Dimensions-- 51 x 66mm
External Connector-- 10-way right-angle SIL header (male or female)

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PIC Programer (Parallel Port)

I designed it with following

• WinPIC-800 (V3.64)
• Hardware (PG3b)
• PC Parallel Port
• 12-20V/DC Power Supply

In this programmer i modify the (PG3b) with my own techniques,First i modify the Parallel port cable that's one side is DB-25 (Male) connector and other side is DB-9 (Female) connector and this DB-9 (Female) Connector is plugin in DB-9 (Male) connector which is on the Programmer Board.This process that i do just only for the reducing the extra space of Programmer Board and make it much more efficient in working mode.All pictures and Fully operationally Working Video are attached.

To get COMPLEATE PROJECT in working and tested condition feel free to contact with me just click on "About" link

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