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Rotary Telephone with Automatic Message

I would like to create the following device:

An old style rotary telephone is to be altered so that when the handset is picked up, a message is played down the earpiece. This message is only played when the handset is picked up. The phone should be powered by batteries. The message should be able to be changed. The phone will have no other function. The microphone will not do anything - the message is entirely 1 way.

Example of phone style:


Kĩ năng: Kĩ thuật điện, Điện tử, Ngôn ngữ lập trình R

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Về Bên Thuê:
( 1 Nhận xét ) Dalkeith, United Kingdom

ID dự án: #8711014

10 freelancer đang chào giá trung bình £206 cho công việc này


Hi, im based in the UK, I can supply you with a working prototype. You say the microphone need not do anything, but you could use this to record the initial message that you want the telephone to play. If you could sen Thêm

£333 GBP trong 30 ngày
(11 Nhận xét)

A proposal has not yet been provided

£222 GBP trong 20 ngày
(6 Nhận xét)

Hello, As we talked before on the chat I bidded your this project too. I would like to work 2 of your project with my pleasure. All the BEST, Ali ŞERBETÇİ

£150 GBP trong 10 ngày
(2 Nhận xét)

A proposal has not yet been provided

£142 GBP trong 5 ngày
(2 Nhận xét)

Hi, Should be no porblems in executing this project, I have many years experience in microcontroller design and construction. A few questions though. The audio quality will be limited by the earpiece element used in Thêm

£222 GBP trong 3 ngày
(4 Nhận xét)

Can make such device with buit-in SD-card (hiden under the cover). So any message (or sequences of the messages) can be written on it and played)

£140 GBP trong 15 ngày
(11 Nhận xét)

I have over 27 years experience in electronics design and 14 years in software. I have done a lot of work for BT in the past and I am very familiar with the old 746 phone. My proposal is a battery powered device tha Thêm

£250 GBP trong 30 ngày
(2 Nhận xét)

Hi, I am electronic engineer and I have done may projects related to phone lines. I am expert with DTMF, call waiting, caller ID etc.. But from your description I understand that you want only a simple mp3 playe Thêm

£480 GBP trong 30 ngày
(2 Nhận xét)

I am electronics engineer. Your requested functionality can be created. . Thank you.

£150 GBP trong 5 ngày
(5 Nhận xét)

Hi I am engineer in electronics and embedded system, I can help you create your one project quickly This is my Channel if you need to see what i realized: qudcopter , air plant, robots.... [login to view URL] Thêm

£111 GBP trong 7 ngày
(0 Nhận xét)

A proposal has not yet been provided

£100 GBP trong 3 ngày
(0 Nhận xét)

A dedicated audio chip will be used to achieve the desired results. The chip can connect to the computer via USB and you can drag and drop audio files as it is a USB storage. The storage is 16MB, which enough to store Thêm

£200 GBP trong 20 ngày
(0 Nhận xét)