Design and make (solder) a small electronic circuit for me
$10-30 USD
着払い
Hello, i need a circuit with a voltage regulator to works fine with whatever the voltage input, the input voltage should be 12V DC (from a car) but may be some voltage peaks and unstable voltage , so not trust on a clean voltage source
The circuit will have a switch, as soon as the switch it's closed (very short pulse) the circuit should start a real time timer and calculate the time elapsed until a new pulse , this time will be showed in a 7 segment display, this exact model
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So, i turn ON the circuit, the screen will show northing, i close the switch, wait 10.5 seconds and close it again, then the segment display will show 10.5, i wait 20.8 seconds more and i close the switch again, the segment display will show now 20.8 digits
There is 3 must on this project
1. Timer accuracy, it's mandatory to be accurate as hell for, atleast one hour, no more than 10ms drift/ error in one hour, use whatever you want, chip, arduino, rasperry whatever, i don't need memory, extra pin, comunication, battery...
2. Simple and cheap as hell, you will decide the components you need and provide me where to buy for you, or buy your self
3. Circuit Make, programing and Solder by you, i need you to send me it finished (without screen) and ready to connect to power and screen, i don't need a pcb, just solder all componets with wires as organized as possible, just a prototipe
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29人のフリーランサーが、平均$130 で、この仕事に入札しています。
I am an Electrical Engineer having specialization in Electronics and Control, teaching in Electrical Department FAST National University Pakistan. I am also continuing my MS degree in Electrical Engineering with specia もっと
Hello, I am electronics and communication engineer. I have been working more than 6 years as embedded systems engineer. I am expert to PCB design. We need to talk further because shipment, produce PCB, companents etc. もっと
Hello, we awill ship you fully working circuit. The clock will be controllled through RTC (Real time clock). Device will be running on Arduino. for more details please feel free to contact. Regards, Shahbaz.
Hello Sir, I went through your project proposal and it's very interesting and I would like to work on this project. Why you should hire me ? * I have four year experience as a freelancer and もっと
I am a professional PCB and Circuit Designer. I designed many circuits and their PCB's. I also do programming of microcontrollers and their interfacing with different electronics components. I have experience in Pic,80 もっと
i can do it for you on a simple low cost pic microcontroller. i can design it on a small, well organized pcb with input filters to remove all electric and magnetic noise. off course i will check it for many hours befo もっと
Hi! I'm an American engineer with 5+ years of experience in RF electronics, 2+ years in data acquisition and 7+ years in circuit design. Currently work in the EE department of a defense firm (can't say which - sorry もっと
Hi i can make it for you, i´ll provide all components but you should cover the ship price. hope we can work together. Regards
I will use Watch-Dog Timer For this You might have observed that - If u are playing Music in car & U press Ignition switch to start the engine -> music system Resets as it does not get sufficient power. Power Supply もっと