PCB module

Hi! Now many fake projects on freelancer.com. Please confirm that you are a real, contact us in chat. We can do this project in Altium designer and send to you Gerber and Altium files at the end of project. We will use Atmel AVR MCU to solve this task. We can send you prototype by DHL or TNT. More details in chat. Best regards, Oleksandr.

Hello. I can do it. .

Thank you for the detailed specification. Its always helpful to design the schematic when the complete specification is available. I am planning to do it using a micro-controller. (preferably a PIC 8 bit). This could be done with minimum components and maximum efficiency. My bid includes, schematic design, PCB layout design using EAGLE, building the firmware for the PIC micro and also prototype testing on breadboard for proof of concept. I will use 8 pin PIC with an ADC which will read the input signal and then will do the necessary actions depending on the logic that you have mentioned. Using a micro-controller will be useful because you can set the threshold and time duration in software. Board size will be very small and will be within 20x20mm or may be less than that. If you just need to check whether it works or not then I can do it using another PIC that I have in my bin which is a 20 pin device but similar in nature with the one that I will be using for your one. In that case prototyping cost will be nil because I already have that in spare. Lets discuss more and will do this job nicely. Also in case if you are in tight space constrain then let me know. I can minimize the board size even smaller with components on two side. There are many possibilities with using a PIC because in that case you can have a status LED connected on a pin to show the OUTPUT status visually...etc. Thank you for your time and I am looking forward to hear from you soon. Best Regards... Roy

I have read and understand your requirements Please open chat window to discuss further.. ++++++++++++++++++++=====================================

i am an electrical engineer with 4 years of experience. i will be using comparators and and gates to produce the required response. i will provide you a simulation in proteus for the circuit or make in on the breadboard as required (i have the components no need to pay for or wait for them) and make the BOM and GERBER files in eagle. i will be able to provide you with a PCB size of less than 3x3 cm with external power. contact me to discuss more on the project and any changes you may wish to add

Hi i can help you with extensive professional experience in Electronics (Digital, analogue & Embedded) design and development. I believe in quality work. Contact me and send me details. Feel free to ask me if you have any queries.

hi, i am an electrical engineer and i can design this circuit. it is possible in several ways i am describing the simplest way. first use of precision rectifiers to convert the ac input to dc and then a voltage comparator having reference voltage of 100mV will compare this voltage after that a 555 based adjustable timer circuit to produce output voltage. i will try to use smd components on a double layer PCB. time frame for both circuit designing and PCB is about 10 days. please contact me if you have any question or need further details regarding to the project. thanks, Rizwan

i will use small micro with ADC to read analog voltage with accuracy of 4.8 mv so it will be enough to your application the code will hand 0,3.3V output the size may be 1cmX1cm to get sch and pcb in 3 days 7 days u will get working prototype on bread board thanks

Dear Prospective Employer, The problem as posed can be solved in several ways. The three most likely are as follows: 1. Microcontroller Based: Propsal ATTiny10 2. Op-Amp only design 3. Op-Amp and timer design The Micro-controller design would have my preference, it allows for the smallest circuit. The only things required are two caps, a resistor, a diode and the micro-controller. The smallest of the Atmel Family, ATTiny10 has an 8bit ADC and no amplification, which means at 3V3, it can trigger at about 91mV (7 out of 255), or 104mV (8 out of 255). It will, however, only require a PCB < 10x10mm, or if extra room is needed for connectors and/or manual soldering, 10x18mm. The total cost of the parts would be about $1, but the Tiny10 would have to be pre-programmed. I stock a number of Atmel micro-controllers and tools to program them, apart from that I am able to manually create a prototype on PCB material, allowing me to do an experiment within a couple of days and discuss whether an upgrade to ATTiny13 would be required (10bit ADC and a 1.1V reference to allow higher precision thresholds). The Tiny13 would mean a larger PCB, but also mean it could be programmed in-situ. Option 2 and 3 can be discussed if micro-controllers are not an option. Delivery of prototype SCH/PCB: 2 days from t0 Delivery of prototype test results: 5 days from t0 Delivery of final modifications to SCH/PCB: 8 days from t0 Optional Final test: 10 days from t0. Bid including 1pc proposed prototype

hi... i can design your project in Altium Designer.. i ll provide to you schematics, PCB, BOM and gerber files and what you need im interesting your project, pls give me more details.. thanks..

I will start by using a low voltage drop diode to select only the positive part of the AC input. I will then use an OP-AMP to compare that to a test voltage, which will be close to your 100 mv, although this will be after a diode so I will really be testing for 400mv. You said some tolerance was ok, and if this isn't then I have other methods. I will get the test voltage using a voltage divider from the 3.3v input. Once I am able to see when it crosses the threshold with the opamp, I will connect to a simple 555 timer chip circuit that will stay on for 5 seconds, and will reset the 5s timer each time it get's a poll. I have made circuits that do both of these tasks before, one making an AC dimmer, and many 555 timer projects, and I have plenty of experience in this field. I can make the Eagle layout in 2 days, and the prototype as soon as I get the parts. If we order from DigiKey, it tends to only take 3 days for delivery. After that, I will only need 1 day to lay it out on a board. I will attempt to make it 3x3cm or less, and it will for sure be less than 5x5cm. I can possibly get it smaller if components are allowed underneath (just some surface-mount bits).

1) If your input frequency(which you have not mentioned) is low(blow 100 Hz) a micro-controller will do your job. 2) If it is not please mention it so I can give you the solution Thanks Regards I have worked in following areas for last 25 years • Pcb Artwork Layout: Mostly I do my pcb artwork layout in pads(Mentorgraphics). I am also familiar with Orcad ,Eagle,Altium. Right from my first job(back in 1984) I am doing my own artwork layout for my own designs.I started doing with inkpen and paper and upgraded myself to cad. • Electronic design: I have developed many T & M instruments .(Function generator, Linear power supply, Frequency counter, safety resistance meter. Etc) • In power electronics I have worked for almost 15 years. I have developed many SMPS up to 500W with PFC input. I have developed LED drivers from 1 W to 150 W using Power integration IC’s • I know C language though I am not expert on that but I can trouble shoot the programs and algorithms logically. • I have developed many product using Arduino

A proposal has not yet been provided

Arva Energy is R&D company. We have experience for our client's special projects. We can design this project and make a board. Producing board or making prototype is extra. I think this PCB about 5x5cm We are using Eagle Pro. We plan that this project requires 7 working days for finish Eagle design. We will use microprocessor for this project, Do you put this PCB into enclosure? After design, manifacturing prototype cards requires 7-10 days also. We are waiting your response. You plan we can.

Hello, 1. I would use microcontroller with integrated ADC because one of request is smallest PCB as possible. 2. I predict PCB size would be max 2" x 2" without power-supply and depend on OUTPUT requirements for current. 3. I need 2-3 days for SCH and PCB in Eagle 4. I don't need prototype on breadboard because microcontroller, I can make adjustment with software (if needed). So when I finish PCB I can have same day or next day PCB for testing. Best regards, Mladen

I would use 2 different comparators referenced by two different pre-programmed (Low Power) regulators to set the + and - 100mV levels, both of which would feed a flip flop, then insert a timing circuit between the negative referenced comparator and the flip flop to count of 5 seconds of time.