Design and implement a prototype for Letterbox Postal delivery alarm/monitor

$250-750 USD

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将近 11 年前

$250-750 USD

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Hi All, Thanks for your interest in Wireless Electronics. What I am looking for is something similar to MailChime. You can find more info on MailChime at http://www.amazon.com/Mail-Chime-Wireless-Alert-System/dp/B00103FDDU/ref=cm_cr_pr_product_top or something similar to Thanko Mailbox Sentry Postal Delivery Alarm. You can find mor info at [login to view URL] What is Mail box Alert Alarm? Mail box alert alarm is an electronic gadget that will alert the resident at home when there is a letter/post in their mailbox. Requirements- 1. The sensor needs to be able to detect letter/post in all kinds of mailboxes including vertical, horizontal and sentinel type mailboxes 2. The Sensor needs to be battery power supplied and the battery power usage has to be minimal so that the batteries will last longer 3. The Sensor needs to send a wireless signal via RF, when there is a letter/post in the mailbox 4. The Receiver needs to be compact and be able to receive the wireless signal sent by the transmitter and beep an alarm & make visual indication such as glowing a LED or a counter displaying from 00 and increments for every letter placed in the postbox 5. The receiver needs to have a reset button for the user to reset when they needs to. Say, after picking the mail 6. The receiver needs to be battery supplied so that the user can take anywhere within the house 7. The range of operation needs to be atleast 100ft to 200 ft 8. The transmitter power needs to adhere to Australian ACMA standards. Say, if using 433 Mhz, then the transmitted power needs to be less than 25mW 9. The interference needs to be zero in general. In particular, if there are two devices used by two neighbours next door or letter boxes next to each other say in an apartment building, there has to be zero interference 10. Finally, the design has to be the cheapest to save cost but it has to be high quality product Please email for any enquiries. I am expecting this project to be done in 2 weeks time thanks Ram Jothi

项目 ID: 4610928

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@betaenergy

Dear Sir, I'm 15 year experienced Electronics Engineer whose working area is directly related to your project. I have designed several system which is related to your project. I have high level experience about hardware design, analog design, embedded system, microcontroller, power electronics, system simulation, digital motor control. Examples related to your project are attached. It shows my ability to make your project. If you investigate example, you will see that I have strong background similar to your projects. Project lists which I have made until now is attached also. We can determine budget by discussing details of your project. I'm open to work with amount which you can pay. Any questions, you can ask me. The way which will be used to implement is such as: - My profile is below. It shows every issues related to your project. Please evaluate it carefully. If you do it, you will see that I'm ideal candidate who can make your project without any problem. I will wait for being started contract. Regards. Metin Dear Sir, We are Reserach and Development company whose working area are : -Digital Motor Control -Analog Design -Electronic Design -Power Electronics -PCB design -Embedded system -Matlab -Simulation of hardware For each concept descriptions are as follows: Digital Motor Control: -3-phase induction motor vector control drive -Flux estimation algoritm generation -DSP(TMS320) implementation on motor drive -Low speed application -Torque and speed loop generation -Control algoritms Analog design -Low power distribution -Noissless special opamp based analog circuits -Analog filters -Orcad simulation of several circuits Electronic Design -RF transmitter and receiver -Bluetooh reader and transmitter -Magnetic reader Power Electronics -Implementation motor drive -AC/DC converter -DC-DC converter -Battery charger -Solar inverter -Renewable Energy simulations -Uninterruptle power supplies PCB design -Schematic design by Altium -PCB design by Altium -Power board design -SMPS board design Embedded system -PIC18,PIC24,PIC30 and dsPIC applications -Ardino -MSP430 -Atmel -DSP(Texas Instruments) -Renesas Matlab -Power Electronics simulation -Motor drive -Wind Energy -Solar Energy -Control applications Simulation of Hardware -Orcad Simulation(TI,National, Linear Tech, Maxim libraries) -LTI -National -Matlab Very important Note: References attached. Please look excel file to see projects which we made until now! Metin

$526 USD 在3天之内

4.6

(13条评论)

4.7

@EEmbedded

Hello. We provides Custom Electronics Design, Embedded Systems Design, Prototyping & Contract Manufacturing Services covering a wide area in the electronics domain. We design all types of electronic circuits or products according to custom specifications at affordable costs while maintaining highest possible quality. Contact us for your custom electronic product development & manufacturing needs.

$555 USD 在3天之内

5.0

(10条评论)

4.4

@shahbaz1980

Hello check PMB.

$555 USD 在10天之内

5.0

(7条评论)

3.7

@eried

Maybe I can help

$555 USD 在3天之内

4.9

(6条评论)

3.7

@usman710

Hi. I'm Masters in Electrical Engineering with expertise in Microwave/RF circuits. Please check my portfolio for details and samples....Check PM

$750 USD 在30天之内

5.0

(3条评论)

3.5

@DamithaKD

Read Pm sir :)

$333 USD 在20天之内

5.0

(2条评论)

2.6

@SoopDesign

I can help

$515 USD 在3天之内

4.0

(2条评论)

2.2

@BEBO24hours

Ready to work with you.I can assure you of my timeliness, quality and experience. I can start work immediately.

$618 USD 在7天之内

0.0

(1条评论)

0.0

@Hanzillahanzilla

Hello- we are a highly experienced melbourne based development and engineering te with extensive experience in prototype development. We are skilled at adhering to codes and developing quality material. We have read your requirements, and can begin immediately. We can deliver within 10 days.

$722 USD 在3天之内

0.0

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0.0

@udayd75

PLEASE CHECK PRIVATE MESSAGE

$526 USD 在11天之内

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0.0

@nrameshyadav

I will make it in less time than. If you can reply early i can make it count.

$666 USD 在6天之内

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@mshahzads

Hi dear; I've knowledge and experience to make this device. Regards

$555 USD 在15天之内

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@GomathiP

Hi, We are happy to take this project and also have experience in embedded .Thanks.

$611 USD 在10天之内

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@XtremeEHS

hi, do you need help?

$555 USD 在3天之内

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@komalthakur19

hello I have expert team working on embedded systems.I will be glad to work with you

$500 USD 在12天之内

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@hhlo

I have done 10dBm 433Mhz(ISM) transmitter with -110dBm sensitivit receiver.. giving rage of 150meter lin eof site & ~80meter across 2-3 walls... I can easily do this,quickly. I have done simillar long range design also

$333 USD 在3天之内

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@EmbedSol

hi please see PM

$555 USD 在20天之内

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@krishna1962

i can design it in 12 hrs ( if it is only design)

$250 USD 在2天之内

0.0

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@ColdKeyboard

I'm Applied Electronics and Embedded systems engineer. I have already worked on similar projects and I can supply you with the bill of material, schematics design, PCB design and working device (proof of concept) if required. Also I see a lot of room for improvements on this project. I'm looking forward to hearing from you!

$250 USD 在7天之内