Circuit design jobs

Hello there, I have a requirement of a PCB design. 2 indicators (5mm LED) for two lights in a PCB. Supply is 230 Vac. Use LDR or whichever required. I have made a circuit for this on my level. I just want to improve this circuit. This is just a small personal project. This is just two minutes project for experienced. Chat me for more details. : Hemchandra

Design a circuit that converts energy from 3.7V battery into a high energy taze. Requires an integration of a step-up transformer, capacitor and oscillator. Two conductors that conduct this energy.

I am looking for help in designing a PCB board with multiple RF reader/ Writer antennas (13.56 MHz - NFC Tag) with each antenna size not more than 2.25 Inch X 2.25 Inch. Each antenna should read/write the contents of its squire (2.25 inchX2.25 inch) and NOT read/write the contents of the adjacent squire (with antenna). Further, this PCB needs processing power with an Internet connection.

I have PDF file which describes a circuit but there are some parts I didn't understand. Someone experienced in High voltage design needed. Details will be shared.

* TWO IMPORTANT POINTS * 1. You do *not* need to spend one of your bids to bid on this project. 2. You do *not* need to have a microcontroller (Arduino or ESP32). * PAY * I will pay you daily. You will work 1 hour/day for 10 US dollars/hour. Being paid daily is a big advantage for you because it nearly eliminates the risk that you will be unpaid. * EXPERIENCE * You ...To me MicroPython on ESP32 seems like the better technology for this project (and, frankly generally) yet I think many candidates have used C/C++ on Arduino and therefore would prefer C/C++ on Arduino. * DESIRABLE BUT NOT REQUIRED * Experience with one or more of the following would be desirable: Python, Java, JavaScript, C++, C#, .NET, PHP, mechanical engineering, electrical engineering, circuit design, and...

Hello, I want to develop an anti static ESD gun. I need you to design the electronic circuit and list the components to be used. It could be the same as in this video : I need schematic, BOM and PCB layout. Let's discuss how to develop that. Regards,

* TWO IMPORTANT POINTS * 1. You do *not* need to spend one of your bids to bid on this project. 2. You do *not* need to have a microcontroller (Arduino or ESP32). * PAY * I will pay you daily. You will work 1 hour/day for 10 US dollars/hour. Being paid daily is a big advantage for you because it nearly eliminates the risk that you will be unpaid. * EXPERIENCE * You ...To me MicroPython on ESP32 seems like the better technology for this project (and, frankly generally) yet I think many candidates have used C/C++ on Arduino and therefore would prefer C/C++ on Arduino. * DESIRABLE BUT NOT REQUIRED * Experience with one or more of the following would be desirable: Python, Java, JavaScript, C++, C#, .NET, PHP, mechanical engineering, electrical engineering, circuit design, and...

I wanted someone from bangalore to physically assemble a PCB. It has a few surface mount components. I just need only PCB to be assembled, just for testing the prototype. Have procured most of the components, for remaining 2 components, it needs to be desoldered from a existing circuit. PCB design attached.

Write a program in cpp that reads a graph (from its input) and prints, either “This graph is not Eulerian.” or an Eulerian circuit of the graph (depending whether or not the graph is Eulerian). Input Format: The names of the letters are single (uppercase or lowercase) letters. The first line of the input contains the names of the vertices of the graph. Number the vertices in the order they appear in this line. Each of the subsequent input lines contains an edge as a pair of two letters. Number every edge in the order it is read from the input. Output Format: If the graph is Eulerian, you should print the Eulerian circuit as a sequence of vertices that starts and ends in the vertex numbered 1. Moreover, whenever your algorithm has to choose an edge, it should...

HI, I have already provided tenant with the Notice to vacate and eviction notice. My understanding is now need to file the writ with the court and have served. I would like to have an attorney handle this final portion. Property in Newbury NH , which is 5th circuit, Newport NH

I am looking for a simple analog circuit to be designed. This design would function in a very similar way to a 3-Phase RCD (Circuit Breaker) . Essentially I need to design a Current Sense Circuit based on a Ferrite Ring, that can detect an imbalance between current passing through the ferrite core. I am looking at about 0-30mA detection, with three thresholds to detect and indicate. The whole design would operate on 220-240v from the mains power being sensed. This indicator would be minimum parts count, powered off the power system being measured. 5% accuracy is OK, this is a visual indicator not a safety item.

This project is to design and implement a wireless microphone, subject to size constraints. Milestone 1: Deliver Electrical Circuit Diagram and Supplier Quotes for Preprogramming Deliver an electrical circuit diagram satisfying the electronic components, and design considerations, discussed in the attached PDF document. Two of those electronic components will need to be preprogrammed. Thus, supplier quotes for preprogramming must be delivered as well, from both a primary and secondary source. Milestone 2: Deliver Gerber Files and Bill of Materials (BOM) for Final Design Milestone 3: Deliver Ten Flexible PCBAs, and FCC/ETSI Compliance Testing Results

...(upto 10amps) identify the voltage, current, power factor & sine increment timing provide modulation of both the power factor & sine timing. The program will seperate voltage & current then correct the timing of both waves then rejoin the signals to result in a setable power factor on a single output. The program will require multiple instances to analyse input signals from different points on a circuit board (multiple inputs). The program will input two independent high voltage signals & will have to able adjust each signal separately & output the signals to independent output pins. The program will monitor & bill power consumption (with a setable tarrif rate) by sine angle analysis, the sine angle over wave length will allow the program to identify t...

A Route optimisation app 1. Should be able to get the shortest route between 2 points(starting and finish time)with up to 300 stops regardless of the distance between the points. 2. Should be able to read addresses using QR code or enter manually but pre-populate the location so it picks up addresses quickly. 3. Should be able to optimise the route and once the route is optimi...stops. 5. Time at each stop can be entered manually if we want to change it otherwise standard time at every stop should be 1 min. So it should give us the estimate time for the whole run. 6. Should have the capacity to include SMS the recipient(if they have provided the mobile number) and estimated time window of couple of hours. 7. Want the app in Android and Apple Play. 8. Reference App "Circuit R...

...long term client/freelancer relationship along with potentials for partnership. Although I have an engineering background, my strength is marketing & sales. I'm hoping to find the right dogs to roll with as I start turning my impacts from "decent selling products" into "highly impactful" products. Ideally if you had experience with: - Motors - PCB / Chips (nothing too high end) - Schematic Design & Testing - Circuitry (& making sure our circuits don't break or malfunction during transport, or during use, etc...) - Batteries - Potentially Solar - Potentially Audio Components - CAD or some type of program to test the circuits and to ensure it works (important) > The more you know, the better. I do understand we'll have to re...

* TWO IMPORTANT POINTS * 1. You do *not* need to spend one of your bids to bid on this project. 2. You do *not* need to have a microcontroller (Arduino or ESP32). * PAY * I will pay you daily. You will work 1 hour/day for 10 US dollars/hour. Being paid daily is a big advantage for you because it nearly eliminates the risk that you will be unpaid. * EXPERIENCE * You ...To me MicroPython on ESP32 seems like the better technology for this project (and, frankly generally) yet I think many candidates have used C/C++ on Arduino and therefore would prefer C/C++ on Arduino. * DESIRABLE BUT NOT REQUIRED * Experience with one or more of the following would be desirable: Python, Java, JavaScript, C++, C#, .NET, PHP, mechanical engineering, electrical engineering, circuit design, and...

I am a duck hunter with a vision to create a Motorized Duck decoy with the ability to connect to the users phone via Bluetooth to display certain information as well as the ability to tell the decoy what to do. I am starting from the ground up and have no knowledge of programming or app development and need help in creating an app that could control the decoy by a circuit board like arduino or something better. I really think that this would revolutionize duck hunting and bring something new to the table. I need someone who can program and buy a mobile app.

I am in search of someone who can design a schematic, and the Gerber file for a PCB board development of a prototype project i have. Prototype is currently inform of a circuit that was created using the Arduino ATMega.

Thermal management is another major problem area for UV-C LEDs. Since only about 5% of their power is converted into light, the remaining 95% becomes heat that must be quickly removed from the circuit board before the heat-sensitive LED die fails.

design ir obstacle detector powered by 1.5vx3AA batteries which must be keep battery backup at least 3 month . this circuit 24 hour in operation (switch on)

I need a router circuit design which will support OpenWRT Firmware: The circuit should have the following components; 5 Fast ethernet ports; Wifi support with external Antenna support; USB port for 3G/4G; VDSL/ADSL (RJ11 port); Please only serious freelancers should bid. If you do not know please dont bid. Also i need it to have an internal fuse which shall protect it from surges.

I need a PCB Design Engineer who can make the design of the pcb for the Dc adapter and should be smart enough to suggest me the protections required in the circuit.

I am a mechanical engineer and hobbyist that wants to create a small device that reacts in the presence of voltage, for this i need a really small voltage detecting circuit (10x20x5 mm) Specifically, when this device comes near an AC line , a LED on the mini circuit should turn on. There are plenty of solutions on how to make a circuit like this online, however the resulting circuit comes out too big. I need this circuit not bigger than 10x20x5 mm. (Battery included)

Hi Zain Ul A., I noticed your profile. Gemcorp is Emissions reduction tech company. Questions for you. u know frameless motors? theory? tubing? 4.5 volt circuit 5 fluid dynamics? would need to be signed. Simple project for right mind

Hi Ahmed, Gemcorp emissions reduction tech company. I have questions for you. you familiar with frameless motors? tubing? theory? 5.5 volt circuit to power frameless motor. 6. are u interested? their is a purpose using these building blocks. an NDA would need to be signed before going further. project is simple for the right mind

Search for different types of real applied circuit switching and packet switching networks'

* TWO IMPORTANT POINTS * 1. You do *not* need to spend one of your bids to bid on this project. 2. You do *not* need to have a microcontroller (Arduino or ESP32). * EXCLUDED COUNTRIES * Countries with a high cost of living such as France, USA, Japan, Australia, etc. Algeria Bangladesh China India Indonesia Kenya Nepal Nigeria Pakistan Philippines Qatar Saudi Arabia...To me MicroPython on ESP32 seems like the better technology for this project (and, frankly generally) yet I think many candidates have used C/C++ on Arduino and therefore would prefer C/C++ on Arduino. * DESIRABLE BUT NOT REQUIRED * Experience with one or more of the following would be desirable: Python, Java, JavaScript, C++, C#, .NET, PHP, mechanical engineering, electrical engineering, circuit design, and...

I need a simple circuit that 30 years ago I could have designed myself but I switched careers from electronics to computers in 1995 and haven’t designed anything electronic since then. I need a basic circuit that you could probably do in your sleep that has just 2 opto-isolated inputs and one output to a relay via a variable timer all using old fashioned through-hole components not smds. The supply rail is 0 & +12VDC and the inputs are both high at from +5 ~ +12VDC The 2 optocouplers should be the 4NXX series and any transistors should be general all purpose BC5XX types and any diodes should be 1N4148 or 1N4001. The 2 optocoupler outputs should each drive a Led and also have a test switch on each to force each output to go high and the led to go on. The optocoupl...

Hello, I have a voltage regulator made with a LM25085 (Vin 6 to 12V, Vout 4.3V), the max current is 5.5A. I have used TI Webench to make the design, and I have just get the PCB from my supplier. The circuit doesn't work, when a load connected as output (see the attached picture Vin, Vsw, and Vout). I need someone expert with this kind of regulator that can fix the problem. Regards, Riccardo

design circuit as per telephonic conversation

I currently have a NLRB case With the third circuit court of appeals. While this case was on Appeal I went back to the NLRB and the NLRB FOUND MERIT in my charges and we were suppose to start trial in or around early September 2020. With this case we agreeed to a settlement. MY LOCAL UNION had to post notices and send out e-mail blast to everyone in the local saying what the did wrong and give me all truthful information when asked. This is what I need. Literally during these two trials my 2 NLRB attorneys found out that my Union was lying about hiring hall procedures. I now have damages that we feel is harassment. I have been harassed since 2014 and it hasn’t stopped, The NLRB only can make you whole. I was told that now would be the time to consult an attorney and bring a ...

Hi Ansar, I’m looking for a circuit which I can place it in a switch board and then it will allow to control that switches from my mobile phone (not from a far distance..... couple of feets/meters is fine for me).... please let me know if you can help me out

I need a Python or C/C++ program which will generate a random circuit consisting of resistors only, draw it in LaTeX and calculate the equivalent resistance. The circuits must be constructed similar to that ones from the attached picture. The program must be called from the command line and run in Bash. Example of executing the program: ./program 100 100 1000 2000 In the above example, the program is supposed to generate a random circuit made of four resistors, these resistors must have a resistance value equal to 100, 100, 1000 and 2000.

Looking for some one who can help into building an circuit to measure accurate moisture content.

Write a program that reads a graph (from its input) and prints, either “This graph is not Eulerian.” or an Eulerian circuit of the graph (depending whether or not the graph is Eulerian). Input Format: The names of the letters are single (uppercase or lowercase) letters. The first line of the input contains the names of the vertices of the graph. Number the vertices in the order they appear in this line. Each of the subsequent input lines contains an edge as a pair of two letters. Number every edge in the order it is read from the input. Output Format: If the graph is Eulerian, you should print the Eulerian circuit as a sequence of vertices that starts and ends in the vertex numbered 1. Moreover, whenever your algorithm has to choose an edge, it should choose the ...

* TWO IMPORTANT POINTS * 1. You do *not* need to spend one of your bids to bid on this project. 2. You do *not* need to have a microcontroller (Arduino or ESP32). * EXCLUDED COUNTRIES * Countries with a high cost of living such as France, USA, Japan, Australia, etc. Algeria Bangladesh China India Indonesia Kenya Nepal Nigeria Pakistan Philippines Qatar Saudi Arabia...To me MicroPython on ESP32 seems like the better technology for this project (and, frankly generally) yet I think many candidates have used C/C++ on Arduino and therefore would prefer C/C++ on Arduino. * DESIRABLE BUT NOT REQUIRED * Experience with one or more of the following would be desirable: Python, Java, JavaScript, C++, C#, .NET, PHP, mechanical engineering, electrical engineering, circuit design, and...

Hi there We are looking to protoype our actual eletric mask with air filter, UVC ...light for air purification and electric fan as well as part sourcing Please find scope below 1. Feasibility study and assessment of Electronics 2. Early Stage part sourcing and selection (Focus on COTS components) 3. Schematics Design and PCB Layout (Max 3 Design Iteration) 3a. UVC ( Ultraviolet light) 3b. Small electric Fan 3c. USB Charging circuit 3d. Battery (Power unit) - small power unit to be able to charge lasting about 12 hours 4. Minimum Viable product  Electronics samples limited to maximum 5pcs 5. Mechanical Feasibility study a. Valve casing design and fabrication b. CFM for flow rate 6. Ensure Functional performance for UVC ( Ultra violet ring) and Air ...

AC Circuit fundamental expert needed here

Write a program that reads a graph (from its input) and prints, either “This graph is not Eulerian.” or an Eulerian circuit of the graph (depending whether or not the graph is Eulerian).

My dear friend, I want to put this board inside these glasses. It has a camera lens and is filming I want to change it so that by pressing a button it will send a photo to the SIM card via email and the phone can be contacted and connected automatically ... .. also have to be sized to fit inside the frame .... a friend suggested I send you the parts .... This circuit should use a very small camera and should use the module Small SIM card to be used .... You can check if you can do it .... I wish you all the schematic and coding files and pcm Also ... I also do a lot of things. If you work with us, we can help in many ways because in my job I constantly need to produce this electronic equipment and definitely happy to work with me. You will ... Please check all the photos, text ...

Generate code to control led using a Pic24 microchip See circuit image I need to control the LED's colour I need the LED colour to change when the sensor is activated Is this possible with circuit?

* TWO IMPORTANT POINTS * 1. You do *not* need to spend one of your bids to bid on this project. 2. You do *not* need to have a microcontroller (Arduino or ESP32). * EXCLUDED COUNTRIES * Countries with a high cost of living such as France, USA, Japan, Australia, etc. Algeria Bangladesh China India Indonesia Kenya Nepal Nigeria Pakistan Philippines Qatar Saudi Arabia...To me MicroPython on ESP32 seems like the better technology for this project (and, frankly generally) yet I think many candidates have used C/C++ on Arduino and therefore would prefer C/C++ on Arduino. * DESIRABLE BUT NOT REQUIRED * Experience with one or more of the following would be desirable: Python, Java, JavaScript, C++, C#, .NET, PHP, mechanical engineering, electrical engineering, circuit design, and...

I need gerber format file of a planar square coil of 55 turns in Eagle software. Description: planar square coils will be fabricated on a thin flexible printed circuit board of thickness 0.2 mm, side of 114 mm, with 55 turns. The copper tracks on the PCB coil will be of thickness of 35 µm and a width of 0.4 mm, with a separation of 0.6 mm between the conductors. I need people who are expert in Eagle software. I need a detailed report of drawing in Eagle also

We need to design the hardware for tracing a modular pallet system. This involves designing an electronic kit which includes modules for geolocation (such as GPS), LTE communication, battery, etc. The job needs intensive knowledge in Electrical engineering and circuit design.

I need a Python or C/C++ program which will generate a random circuit consisting of resistors only, draw it in LaTeX and calculate the equivalent resistance. The circuits must be constructed similar to that ones from the attached picture. The program must be called from the command line and run in Bash. Example of executing the program: ./program 100 100 1000 2000 In the above example, the program is supposed to generate a random circuit made of four resistors, these resistors must have a resistance value equal to 100, 100, 1000 and 2000.

For years, my cousin and I make side money installing high end audio systems and modifications in homes and vehicles. I have a small modular circuit project for car audio and I need a relatively simple pcb adapter designed to accommodate a thru signal. It needs to be 4 fingers that run to inputs on the other end, and a designated size. Additionally I need a card edge connector that will work for the application and within the size of the universal mounting spot we think it will work on, so I need consultation on a suitable, readily available part in case the project is viable(preferably from US suppliers). The device will be mounted horizontally and the small enclosure the fingers protrude from will be supported from underneath, but not mounted in place(nothing crazy, max weight on ...

We are an irrigation installer based in the UK, mainly for Fruit Farmers. We need to find a replacement product to a competitor’s system for when we replace to a new system, this is as follows: We are looking for the design of a system including PCB design and firmware/software. The requirements are for a 2-wire encoder/decoder communication that can communicate up to 1000M over the 2 wires running at 27-30V AC. The input side will have 2 options at this stage – a Digital version for the first one and a TCP Modbus communication from a PLC for the second option. Options explained in more detail below, but an input card that ‘talks’ to output Decoder cards that is a single output on each output Decoder with a switched relay output to power a 24V AC sole...

* TWO IMPORTANT POINTS * 1. You do *not* need to spend one of your bids to bid on this project. 2. You do *not* need to have a microcontroller (Arduino or ESP32). * EXCLUDED COUNTRIES * Countries with a high cost of living such as France, USA, Japan, Australia, etc. Algeria Bangladesh China India Indonesia Kenya Nepal Nigeria Pakistan Philippines Qatar Saudi Arabia...To me MicroPython on ESP32 seems like the better technology for this project (and, frankly generally) yet I think many candidates have used C/C++ on Arduino and therefore would prefer C/C++ on Arduino. * DESIRABLE BUT NOT REQUIRED * Experience with one or more of the following would be desirable: Python, Java, JavaScript, C++, C#, .NET, PHP, mechanical engineering, electrical engineering, circuit design, and...

* TWO IMPORTANT POINTS * 1. You do *not* need to spend one of your bids to bid on this project. 2. You do *not* need to have a microcontroller (Arduino or ESP32). * EXCLUDED COUNTRIES * Countries with a high cost of living such as France, USA, Japan, Australia, etc. Algeria Bangladesh China India Indonesia Kenya Nepal Nigeria Pakistan Philippines Qatar Saudi Arabia...To me MicroPython on ESP32 seems like the better technology for this project (and, frankly generally) yet I think many candidates have used C/C++ on Arduino and therefore would prefer C/C++ on Arduino. * DESIRABLE BUT NOT REQUIRED * Experience with one or more of the following would be desirable: Python, Java, JavaScript, C++, C#, .NET, PHP, mechanical engineering, electrical engineering, circuit design, and...

Hi Muhammad U., I noticed your profile and would like to offer you my project. We can discuss any details over chat. I need a Python or C/C++ program which will generate a random circuit consisting of resistors only, draw it in LaTeX and calculate the equivalent resistance. The circuits must be constructed similar to that ones from the attached picture. The program must be called from the command line and run in Bash. Example of executing the program: ./program 100 100 1000 2000 In the above example, the program is supposed to generate a random circuit made of four resistors, these resistors must have a resistance value equal to 100, 100, 1000 and 2000.