electronics controlled assessment task mp3 player dock david turner

Electronics Controlled AssessmentTask

Mp3 Player Dock

David Turner

Contents:Contents Page Page 1 Introduction and investigating design opportunity Analysing the design brief Page 3Existing products Page 4Analysis of products Page 5-6Survey Page 7Survey results page 8-12Analysis of products page 13Summary page 14

David Turner Contents Page Page 1

Material Plastic? SizeCheap, flexible, ekrielik, I want my mp3 player dock to A rectangle shape about 12cm long andMetal? be a decent small size so that it roughly 16cm high/ Wood? is easy to carry around with you.Soft wood, mdf, pine, hard wood?

• The weight will be as light Colour as possible so it is easy to I want the colour of my speaker With Rasta colours this means take around with you. to be Rasta coloured speaker to I will also have a little that the mp3 dock will stand represent the retro theme. Rasta logo on the dock. out because of bright colours.Outputs Sound from speaker The logo will representVibrations Red, yellow and green. retro themed. Power suppliesBattery powered. I have decided to do Rasta because of Standard: of the inspiration of the chill pillBigger - AA batteries mobile travel speaker.Smaller - AAA batteries. Safety Function Suitable for:10+ age Listen to music louder and clearer? Also for the older generations it will be a fun thing to have on you to play out there classical play your music out loud when youmusic. out with your friends.I will also try and make it soboth male and females willenjoy the mp3 dock.

David Turner Analysing the design brief

Mp3 Player Dock

On my mp3 dock I am going to make shore that there are not little bits what can fall of and then little children chew on it and choke. I will also try and make all of the edges smooth so that the client can not cut themselves on it.

It will be a good Idea to do a survey so I can get a clients view

In this project I will be designing a mp3 player dock. You will be able to use it with your phoneor iPod. This mp3 dock will be suitable for ages5+. You will be able to change the volume andchange the bass.

Modern day mp3 docks will work with mp3 players, iPods and most phones. I am goingto make a mp3 dock which will also work with mp3 players, iPods and most phones.

The speaker that I will make will not justbe for inside the house, you will be ableto take it out with you because it will justplug into your phone.

You will be able to use this speaker whenever you want. The mp3 dock will be battery powered so when the battery runs out all you will haveto do is change the battery.

The consequences of this is that the batterycould suddenly die or you could over power the speaker and then the speaker will start to make a cracking noise and go a bit dodgy.

David Turner Introduction and investigating design opportunity

Page 2

HMDX JAM CLASSIC BLUETOOTH WIRELESS SPEAKERAMAZON

BLUETOOTH WIRELESS MINI PORTABLE SPEAKEREBAY

David Turner Existing products Page 4

CHILL PILL SPEAKERhttp://www.westenddj.co.uk/Product/UDG/Audio/CPA002/

PACMAN SPEAKERhttp://www.amazon.co.uk/Pac-Man-JAN131878-Speaker/dp/B008DCOPWG

X-mini II CapsulePLAY.COM

BEATS PILLhttp://www.argos.co.uk/static/Product/partNumber/1079872.htm?CMPID=GS001&_$ja=cgid:8710161062|tsid:41408|cid:177974942|lid:55245988022|nw:g|crid:31126048142|rnd:11654935887296762153|dvc:c|adp:1o1#pdpFullProductInformation

I have chosen these speakers because there are handheld speakers and they are a similar type of product that I will hopefully be doing. These speakers are either aux compatible or Bluetooth. Some of them are fairly cheap and then some of these speakers are quite expensive.

APPEARANCE

You can get this speaker in a varietyif different colours.

The speaker is very smoothlooking and it has been made toLook very modern.

CLIENTThis speaker would be suitablefor all ages if you have somethingto Bluetooth it to .

SAFETYI think that this speaker is reallysafe because the speaker its selfis really smooth and there is no little objects hanging out thatchildren could get hold of and swallow or cut themselves on.

SIZE

Height 6.6 cmWidth 7.1 cmDepth 7.1 cm

David Turner Analysis of product Page 5

Jam Classic Bluetooth Portable Speaker

COST

£39.99

FUNCTION* Compatible with iPod, * iPhone and iPad. * Bluetooth compatible.* 1 speaker.* 1.5 watts per speaker.* Frequency 100Hz-18Hz* Power from USB* Battery life 4 hours.

APPEARANCEThe appearance of this I thinkis really nice and has a really nice modern look to it.

You can also get this in a variety of different colours.

COST£169.99

CLIENT

I think that this speaker is suitable for ages about 15+,I think this because you wouldnot wont a young child going around with a speaker worthover £100

SAFETY

This speaker will be safe for youngerPeople because the edges of the speaker are smooth, so you will notbe able to cut your self on it.

SIZEHeight 4.6cm Width 19cm Depth 4.6cm

David Turner Analysis of product Page 6

BEATS BY DRE PILL BLUETOOTH SPEAKER

FUNCTION• 4 speakers• Compatible with IPod, IPhone and IPad • Bluetooth compatible• 3.5mm AUX in• 30 watts • Frequency 50Hz• Power from USB• Battery life: 7 hours

David Turner Survey Page 7

HOW MUCH WOULD YOU PAY FOR AN MP3 SPEAKER?

I think that this is a good question to ask because from this I will be able to see what sort of price people willbe willing to pay. Also from this I will be able to see that if people willbe willing to pay a fair bit of money, they will be expecting it to last quite long so they will want a decent material.So the more you pay the better material your speaker will be and the longer your speaker will last.

David Turner Survey results Page 8

£5-£10£11-£20£21-£35

WOULD YOU USE YOUR MP3 SPEAKER OFTEN?

I thought that this was a good question to askbecause if someone was to use their speaker all of the time it would probably last a fair while but not really long.If someone was to not use their speaker asoften as someone who uses theirs all of thetime there's will last a lot longer.

WHERE WOULD YOU KEEP YOUR MP3 SPEAKER?

This will be a good question to ask becausefrom this I will be able to find out wherepeople will keep their speaker.If people where to use the speaker outside they will want it to be suitable to use outsidetheir house and be fairly strong if dropped.


HomeBedroom

HOW LONG WOULD YOU LIKE THE BATTERY LIFE TO LAST?

3 Hours4 Hours5 Hours6 Hours24 Hours

This is a good question to ask because if they are going to use the mp3 speaker all of the time, you would want the battery life to last for quite a long time. If someone was to not to use the speaker all of the time, they would not really mind if the battery life was short.

WOULD YOU USE YOUR SPEAKER JUST IN YOUR HOUSE?


WOULD YOU TAKE THE SPEAKER OUT WITH YOU?

YesNo

YesNo

I thought that this was a good question to ask because if they are going to take there speaker out I will need to make the speaker strong enough to take an impact if you were o drop it whilst out. What ever material I choose to use I will need to make sure that it does not crack or break if it was to be dropped.

With this question I will be able to see how many people will want there speaker to be strong enough to go out and it will work well inside and outside your house.

WOULD YOU USE YOUR SPEAKER DAILY?


WHAT MATERIAL WOULD YOU LIKE YOUR SPEAKER TO BE?

YesNo

This will be good to ask because if you use the speaker daily you will want it to be a strong structure and will want the speaker to have a good battery life.

PlasticMetal

With this question it will tell me what material the majority of people would like there speaker to be. My results tell me that the majority of the people that answered my survey would want the speaker to be plastic.

WHAT SIZE WOULD YOU LIKE YOUR SPEAKER TO BE?


0-10cm11-20cm21-30cm30cm +

This question will tell me what sort of size speakers people like and tend to use the most. My survey tells me that people that people like there speakers between 0-10cm and 11-20cm.

WOULD YOU LIKE YOUR SPEAKER TO BE SMALL ENOUGH SO YOU CAN TAKE IT AROUND WITH YOU ?

This speaker is good because it can tell me if people would actually like to keep there speaker in their pocket and if they want it to be really small.

YesNo

SIZES

David Turner Contextual research Page 13

SHAPES The shapes of phones can vary as well but most phones will be a rectangle shape. With IPhones they tend to be quite tall but also quite thin. With a lot of Samsung phones they can be big and chunky, they are very wide and they are also quite tall. With other phones though, for example Nokia they are somewhere in-between.

FITMENT To make the mp3 speaker play music from you mp3 player or your phone there will be some kind of fitment going from the speaker to the phone.

The sizes of phones and mp3 players will vary from different phones and mp3 players. With and IPhone they are not huge but with a Sony or a Samsung they can be really big.Measurements of phones:IPhone 5s= Height: 123.8 mm Width: 58.6 mm Depth: 7.6 mmIPhone 4s= Height: 115.2 mm Width: 58.6 mm Depth: 9.3 mm Samsung galaxy s4=Height 136.6 mm Width 69.8 mm Depth 7.9 mm Samsung galaxy note 3= Height 151.2mm Width 79.2 mm Depth 8.3 mm

Design

David Turner Summary Page 14

The design of my speaker is going to be a kind of small speaker that I will be able to take out with me easily.

David Turner Product Specification Page 15

• In my questionnaire I asked the people how big they would like an mp3 speaker to be. The majority of the people replied with 0-10 cm and 11-20cm. I also asked if people would like the speaker to be small enough for them to take out with them and most of them said no but a few did say yes so I do not want to make it to big and I don’t want to make it too small.

• I would like my speaker to be fairly strong and if it was to fall off a bed side cabinet or something it would survive it. In my survey I asked if they would use the speaker daily and mainly the people said yes so I want it to be tough. I then asked what material people would like their speaker to be and the majority said plastic.

• From my results it shows that most of the people that I asked would use their speaker just in the house and not really take it out. From this it tells me that I will need to make my speaker suitable for home use and able to handle the out side if someone was to take the speaker out.

• On my speaker I want to have an on/off switch so I do not waste loads of battery. I don’t want to have the on/off switch on the front though I would like it on the back. This is because when its on the back you cannot see it because when its on the front it could effect the design.

• I then asked the question how much would you be willing to pay for a mp3 docking station. 40% of people said that they would pay between £11-£20, another 40% said they would be willing to spend £21-£35. The other 20% o0f people said that they would pay £5-£10. So from my results it shows that people are willing to pay a fair amount for the speaker, so if people do want to pay want to pay a large amount of money they will want the speaker to last quite long. To make it last long I need to make sure I use a good material that will last and will not chip and cannot get damaged easily.

David Turner Page 16

Input/ Connectives Processes Output

4.5mm AUX Speaker

3.5mm mini jack Speaker

Apple compatible only. Apple connectives.

Speaker

Volume control(power amplifier)

Power amplifier circuit (IC1 and VR1)

Loudspeaker can produce sound coming from phones or an mp3 device.

David Turner Page 17

This is a power amplifierThis sub system will provide enough current to drive a speaker.

Transistor pre-amplifier

High current out

Only needs tiny current

Only needs tiny current

Low current out

This is a stereo amplifier, at the centre of the circuit is an audio amplifier integrated circuit or IC. Inside the IC are lots of transistors, which are connected together to allow the small input signal to be amplified into a more powerful output that can drive a speaker.

David Turner Development Work Page 18

Here I am making changes and adjustments to my circuit. This then allowed us to create the pcb.

When I first tried making it into the pcb, the percentage was 97%. We wanted to have the pcb between 85% and 95%.

Therefore because it was 97% I had to make some changes and resize my pcb.


Here is a really small gap and this could be a problem when I am soldering.

I have made the gap bigger so it is easier when I am soldering.

The copper area was full but I then took that filled area out.

I got my percentage down to 94% and then I had to make some changes.

I have added a flying wire because the software could not find room to added another copper track

I have added another copper wire here for the same reason as the other.

This is the final flying wire I have had to add to my pcb.

Y


I've added this LED which is an off board component.

I've changed the anode and cathode wires to red and black so it is easier to see the positive and negative.

I have connected up the battery to the circuit.

I have now added the switch to the circuit. I have now added copper pads for all of my off board components.

I have now filled up the copper area and my surname with candidate number.

I cannot run my simulation because they do not have the chip I need on circuit wizard. This does not matter though because I have had it checked by several people.


This is showing the pcb in the real world and how it will actually look.

This is the art work version of the pcb.

How to make pcb

Put on your apron and goggles and get your tools ready.Step 1: You put your photosensitive paper onto your photo reset board, make sure that it is the right way round.Step 2: You the place it into the light box, try and make sure the photosensitive paper stays in place, you leave it in there for 2 minutes.Step 3: After 2 minutes you take it out of the light box and put it into the bath of developer solution until the exposed areas have been removed.Step 4: Take the board out of the developer solution and give your board a wash under the tap.Step 5: Once you have given the board a wash you can then place your board in the etching tank, you leave it in the etching tank for approximately 5 mins.Step 6: Take the board out of the etching tank give it another wash under the tap and then leave it for 2-3 mins.Step 7: You now go over to the mini drill and drill all of the holes with a 1mm drill.Step 8: Once you have finished drilling you go onto the disk sander to get your board smooth and in the right shape.You have now finished making your pcb.

Equipment you will need.>Apron>Goggles>Photosensitive paper>Photo reset board>Light box>Developer solution>Tap>Etching tank>Mini drill with a 1mm drill bit>Disk sander

http://www.technologystudent.com/pcb/PCB3A.htm

Presentation

electronics controlled assessment task mp3 player dock david turner

Documents

mp3 players

contents page page

survey page

design opportunity page

design brief page

summary page

analysis of products

existing products page