Circuit designJobs

I need Door Lock Digital circuit.

timer concept lcd 3 relay 3 buttons rtc 6 adc (op amp circuit)

Project Details I'm in need of a compact, double-layer PCB designed for a digital circuit. The project involves creating a Gerber file that is ready for printing, accommodating the given circuit diagram. The PCB should be small and compact, suitable for accommodating a digital circuit. The 2 ESP32, SIM800L, MAX 485 and ADS1115 will be mounted on a 2.54 mm pin female single-row header strip. All connectors will use 5 mm PCB terminals with standard 0.1” (2.54 mm) spacing through holes. Components Ref: ESP32 38Pin Development Board: Hi Link HLK-PM01 5V/10W: 2.54mm Pin Female Single Row Header Strip:

I am looking to create a digital airsoft target see attached documents. I will need all files and BOM in order to have whatever PCB we create manufactured and assembled.

I'm seeking a skilled who can quickly and accurately design a mixed-signal circuit using the Proteus/ISIS simulation software. This project revolves around the study of a photovoltaic-wind hybrid network connected to a High Voltage Direct Current (HVDC) bus. Key aspects of the project include: - Understanding and implementing the complexities of a hybrid renewable energy network. The ideal candidate for this project will have: - Proficient experience with the Proteus/ISIS simulation software. - Experience with designing circuits for renewable energy systems. Speed and accuracy are paramount for this project, and I am prepared to compensate appropriately for high-quality work.

I need a circuit board designed and built that uses an ESP32 to drive a large number of LEDs (SMD, 300-500). The LEDs should be arranged to represent a detailed map that will be provided. Key Requirements: - Design and construct a visually appealing circuit board (as it may be directly exposed to end user) - Use an ESP32 to control a large number of LEDs (you will have to explain how you plan on doing this) - Arrange the LEDs according to a detailed city map which I will provide on the circuit board. Ideal Skills and Experience: - Electronics and circuit board design - Proficiency with ESP32 - Experience with LED projects - Design skills for creating an aesthetically pleasing product

I am in need of an experienced electrical engineer specializing in circuit design. The project involves designing a circuit for an unspecified application, so versatility and creativity are key. Ideal candidates should have: - Extensive experience in circuit design - Ability to work on various applications, from consumer electronics to industrial machinery - Innovative thinking for creating efficient and effective designs

I'm in need of a basic precision, manually controlled, adjustable current regulation circuit that can handle up to 15A at 170VDC. The primary application for this circuit will be within power supply systems. Key Requirements: - The circuit should be able to adjust the current from 0 to 15A. - It should be designed for use in power supply systems. - The level of precision required for current regulation is basic. - The control for adjusting the current should be manual or digital. Ideal Skills: - Circuit design and development. - Experience with power supply systems. - Understanding of basic precision regulation.

I'm in need of a seasoned FSM (Finite State Machine) Arbiter expert specializing in digital circuit design. Key Responsibilities: - Design and implement an FSM Arbiter for a digital circuit. You should have: - Extensive experience in digital circuit design and FSM Arbiter. - A deep understanding of the design and implementation of FSM Arbiter. Deadline: 1 days

I have DXF and Python files ready to be processed on an electrical CAD. I'm looking for someone who can run the files and create the necessary 2D drawings. The specific elements that need to be included are: - Circuit diagrams - Wiring schematics - Panel layouts - A Parts list Ideal candidates for this project should have extensive experience with electrical CAD and can demonstrate a keen attention to detail. Please include examples of similar projects you have completed in your bid.

I'm in need of a compact, double-layer PCB designed for a digital circuit. The project involves creating a Gerber file that is ready for printing, accommodating the given circuit diagram. The PCB should be small and compact, suitable for accommodating a digital circuit. The ESP32, SIM800L, and ADS1115 will be mounted on a 2.54 mm pin female single-row header strip. All connectors will use 5 mm PCB terminals with standard 0.1″ (2.54 mm) spacing through holes. 6 X 14 CM PCB Board - Power PCB 14 x 14 CM PCB Board ESP32 38Pin Development Board --> Hi Link HLK-PM01 5V/10W --> 2.54mm Pin Female Single Row Header Strip -->

Title: PCB Design with Gerber Files, Schematic, and BOM Description: I am looking for an experienced PCB designer to help me create a custom PCB design for my project. The design should include: Schematic Design: A clear and detailed schematic of the circuit. PCB Layout: Design the PCB layout based on the provided schematic. Gerber Files: Generation of Gerber files for manufacturing. BOM (Bill of Materials): Will be provided and open to any modifications for better performance,Provide a complete BOM with part numbers, specifications, and suppliers (e.g., Digikey, Mouser). Project Requirements: Board size: 70mmx70mm Layer count: 10 Layer Component preferences: Drill Hole Special requirements: TI Processors and components preferred Target applicat...

I'm in need of an expert to design a circuit for an induction heater. This heater will be specifically used for heating non-ferrous metals like brass. Key Requirements: - The induction heater circuit should be designed to handle a power output of up to 1kW. - The design should be robust enough to endure the rigors of metal heating and forging. - Experience with induction heater designs and metal forging applications would be highly advantageous. Ideal Skills: - Circuit design - Knowledge of induction heating technology - Experience in metal heating and forging applications - Understanding of non-ferrous metal properties and heating requirements.

I'm i...version of the power supply - Designing a board-level version for product integration - Ensuring the AC output is suitable for plasma generation The initial laboratory version will need to meet the exact specifications of the LF-500. Safety features are crucial, with both overload and short-circuit protection required. Ideal candidates for this project should have: - Extensive experience in high voltage power supply design - Proficiency in creating laboratory-grade equipment - Capability to design board-level versions for mass production - Strong understanding of safety features in high voltage equipment - Familiarity with plasma generation equipment Please note, the frequency range and duty cycle have not been specified and would be determined based ...

...adjust membership privileges. --- ## 2. API Request Rate Limiting ### 2.1 Tier-Based Limits - **Differentiated Limits**: - T1: 5 req/sec, 100/min; T2: 10 req/sec, 200/min; T3: 15 req/sec, 300/min; T4: 20 req/sec, 500/min; T5: special/custom limit. - **Implementation**: - Use middleware in Golang (or API gateways) to enforce per-IP, account, and API key limits. ### 2.2 Circuit Breaker and Throttling - **Circuit Breaker**: - Triggered on consecutive failures or abuse patterns, with thresholds adjustable by tier. - **Throttling**: - Use token bucket or leaky bucket algorithms to smooth out traffic peaks. --- ## 3. API Access Monitoring and Logging ### 3.1 Log Recording - **Details Recorded**: - Log source IP, request parameters, HTTP method, stat...

I'm in need of an experienced electronics engineer with a strong background in circuit design. The primary goal of this project is to design a circuit for a piece of industrial equipment focused on automation control. Ideal Skills: - Circuit Design - Industrial Equipment Knowledge - Automation Control Expertise Please note, the main focus of this project is circuit design. Experience with prototype development would be beneficial, but it's not the primary focus.

I'm seeking an electrical engineer with expertise in load calculations. The project involves working with various system components, including generators, transformers, motors, and cables. Ideal skills and experience include: - Proficiency in load calculations - Experience with short circuit calculations - Knowledge of circuit design, power systems, and telecommunications - Familiarity with generators and other system components - Expertise in using relevant engineering software - Creating and approving plot plans - Possesses knowledge about solar systems, if applicable - Billingual (Spanish and English) , if applicable

...This forces me to pay several Internet and to have a computer, (even if it is an Orange Pi Zero 3 that costs less than 30 euros) for each car. Being able to use Janus Gateway to manage all the video and audio streaming from all Raspberrys in all small cars would be a better, sleeker, more economical (in the long run) and better performing solution. The Raspberry is connected to an intermediate circuit to control motors and servo motors via the GPIO port. Each one controls 4 motors and 2 servo motors. They sell me some kits to assemble the strollers, although you have to buy the Raspberry, the USB microphone and the batteries separately. The manufacturer of the Kits provides me with some classes programmed in Python to manage motors and servomotors. I've created a Python ap...

I need an expert who can help me identify the connections on my printed circuit board (PCB) to various components. There are available pins on the board for bonding. After establishing the connections, I need operations performed to control a stepper motor which is connected to the board. All communication and connections to be performed through Bluetooth LE Key Tasks: - Identify connections on the PCB - Connect and bond to the board using Bluetooth - Control the stepper motor with Start/Stop and Direction control commands Ideal Skills: - PCB identification and connection expertise - Bluetooth connection experience - Stepper motor control knowledge Please note that I do not have any schematics or part numbers for the PCB. It is crucial that you have the necessary skills and exper...

I'm looking for an expert in electronics who can design a RGB LED circuit board for a custom electronics project. Key Requirements: - The circuit board will control a 12x12 inch matrix of dot LEDs - The control will be via a microcontroller, specifically an Arduino or Raspberry Pi or Teensy 4.1 Ideal Skills: - Expertise in circuit design and microcontroller programming - Experience with RGB LED projects - Ability to create a 12x12 inch matrix of dot LEDs

I'm seeking a professional with expertise in creating Single-Line Diagrams (SLD) for solar exemption purposes. I need a comprehensive SLD, a Zone Diagram, and details about connection point size and location. All documentation must adhere to the National Electrical Codes. Key Requirements: - Creation of a Single-Line Diagram (SLD) that includes circuit breakers, fuses, and power flow arrows. - Comprehensive understanding of the National Electrical Codes to ensure compliance. - Experience with solar exemption documentation is highly desirable. - Ability to create a Zone Diagram and identify connection point size and location. Please provide examples of similar projects you have completed in your bid.

The block diagram of TABLE 1 shows a 3-stage asynchronous counter that is used to count a series of randomly occurring input pulses. The Q outputs of the counter are used to drive a logic circuit that gives the output in TABLE 1. Design the logic circuit to realise the desired ABCD outputs. Simulate your circuit using the template provided, including an image of all waveforms for at least one full cycle Please provide an image of all waveforms for at least one full cycle. You will need to download the 'PROTEUS 8 DEMONSTRATION'

I need a thorough inspection of my home's electrical systems to ensure they meet code compliance standards before I can get the meter back for renovation. Key Requirements: - Inspection of all electrical systems in the home - Assessment of wiring, outlets, circuit breakers, panels and lighting fixtures - Identification of any potential code compliance issues Ideal Skills: - Licensed electrician with extensive inspection experience - Knowledge of local and national electrical codes - Excellent attention to detail - Strong problem-solving skills Please reach out if you have the necessary qualifications. If no answer please leave a message and ill return your call.

I'm ...experiencing issues with my power supply for an audio device. It is a Flyback design with three different output voltages (-16V, 16V and 48V), however, none of the voltage rails are working. First, i will provide the circuit. If there are no obvious faults, I can provide measurements at specific points of the circuit and follow your troubleshooting instructions! The ideal freelancer for this project would have: - Expertise in power supply design and troubleshooting - Experience working with audio device power supplies - Ability to diagnose and resolve issues related to power supply output I'm looking for a professional who can quickly and efficiently troubleshoot and rectify these issues. The job is done if the design works, or if we m...

I'm seeking an expert to analyze the impact of Gaussian measurement noise on the accuracy of estimating parameters from a second order equivalent circuit model. The primary focus will be on estimating resistance and capacitance. Key components of the project: - Assess the influence of Gaussian noise on model parameter estimation. - Explore the efficacy of the Kalman filter in mitigating the effects of this noise. Ideal candidates will have: - Strong background in circuit modeling. - Proficiency in noise analysis and filtering techniques, especially the Kalman filter. - Experience with parameter estimation of circuit components.

I'm experiencing background noise from my PDM microphone, which is connected to a codec ADC6140 during recording. I've already attempted to troubleshoot the issue by adjusting the microphone settings, but the problem persists. I need review of the PCB layout to identify the problem Key requirements: - Profic...PDM microphone, which is connected to a codec ADC6140 during recording. I've already attempted to troubleshoot the issue by adjusting the microphone settings, but the problem persists. I need review of the PCB layout to identify the problem Key requirements: - Proficient in audio electronics troubleshooting - Experience with PDM microphones and codecs - Able to diagnose and resolve analog circuit design Please provide your approach to diagnosing an...

I'm seeking an expert in circuit design, PCB creation, and programming for an NXP Battery Sensor tailored for an automotive application. Key Requirements: - Full design and programming of the NXP Battery Sensor with CAN and LIN MM9Z1_638. - Implementation of only the LIN (Local Interconnect Network) interface. - Support for specific functionalities: Voltage monitoring, Temperature sensing, and Current measurement. Ideal Skills and Experience: - Extensive knowledge in automotive sensor design. - Proficient in designing circuits and PCBs. - Experienced in programming for NXP components. - Familiar with LIN interface implementation.

We are looking for an electronics circuit designer with expertise in audio recording and playback to design a circuit for a small device with the following specifications: Device Requirements: Recording and Playback Functions: The device should record audio when a button is pressed. The playback should be triggered by an interrupt (via I2C). Audio Quality: The audio resolution should be at least 16-bit for high-quality recording and playback. Audio Alerts: The device should emit audio alerts in the following scenarios: When recording starts. When recording ends. When the battery is low. Power Efficiency: The microcontroller must support sleep mode to save power. The device should operate on 3 AAA batteries, using low-cost and power-efficient components. Trigger by Eve...

A digital control circuit/panel for controlling the power of a magnetron (same as the microwave oven with 1 to 10 power setting) with a timer, name, numbers, other letters, and memory (999) under a 4-phase setting. For example, the computer will ask for the name (15 letters), the power level, the timer, Phase 2, and so on in Phase 1, and at the end of Phase 4, it will ask to ENTER to start.

I am seeking an expert in battery modeling and parameter identification to improve the real-time performance of state of charge (SOC) estimation for Lithium-ion batteries. The project's primary aim is to enhance the accuracy of SOC estimation through refining the parameter identification accuracy within a second-order equivalent circuit model. Key Requirements: - Utilize Kalman filter-based methods for parameter identification. - Significant improvement in the accuracy of SOC estimation. - Experience with lithium-ion battery modeling and simulation. - Ability to deliver high-quality work under tight deadlines. Your expertise in this area is crucial for the project's success. A strong background in battery technology and real-time system performance will be indispensable.

...should effectively communicate the essence of your service: capturing missed calls and engaging leads using AI. Here's a description of a professional, impactful logo design: Logo Elements Typography: Use modern, sans-serif fonts to convey innovation and professionalism. Highlight "CallCatch" in bold or slightly larger font, with "AI" in a futuristic, tech-inspired style to emphasize the AI aspect. Icon: A sleek phone symbol or a missed call notification icon to represent calls. Incorporate an abstract "net" or "catching" element, such as a swoosh or loop, to symbolize capturing leads. Include subtle AI-related imagery, like a circuit board pattern, a small brain icon, or digital waves, integrated into the phone or catching e...

...importance to be a reliable and professional person. We’ll keep in touch through e-mails mainly. For instance, a reliable university student, a part-timer, a free-lance journalist, or a sales representative would be fine. WHAT DO WE OFFER We offer the possibility of a long term (though project-based) co-operation, the chance of gaining good money and the chance of being part of an international circuit of consultants to be involved in market surveys. We also offer field training: we’ll join you for 4-5 days in your country in order to work together on-field and bring our project experience after performing this kind of surveys in more than 50 countries around the world. TIMING Project timing for your country regards a start-up foreseen around the end of January 2025...

I'm seeking a seasoned Assembly language programmer to assist in enhancing our long-standing ASM program. This program has served us well for 20 years with some minor updates along the way, but we need to introduce some additional features. The program is used aboard a circuit board for our agricultural tool for dispensing granular materials in potted plant nurseries, the basic updates required will enhance the interface between the Applicator and a pot plant moving robot, adding signals via an existing wired port : 1. a basic (5v 0.5 second) output signal to confirm completion of dosage. 2. being able to remotely turn the unit on with an external input signal (5v 2.0 second or similar) Key Responsibilities: - Compile the existing ASM program to confirm compiling stability, an...

I need a skilled PCB designer to create a circuit board capable of measuring distances using a laser sensor (or ultrasonic). This system should have adjustable ranges and provide alerts through both vibration and sound. Furthermore, the design should incorporate a SIM for communication, virtual human sensors and a GPS module for real-time location tracking. Ideal Skills and Experience: - PCB design - Knowledge of laser sensors - Experience with SIM and GPS modules - Understanding of vibration and sound alert systems - Ability to create designs for adjustable range systems Please note, the system will need to provide real-time tracking, so experience with designing for this capability is essential.

I'm in need of a skilled circuit board designer to create Gerber files for a single-sided circuit board. This board is meant for a hobbyist-level rpi project, so the design should be user-friendly and suitable for the DIY community. Key Responsibilities: - Design a single-sided circuit board capable of accommodating connectors. - Create detailed and accurate Gerber files for PCB manufacturing. - Ensure the design is robust yet simple enough for hobbyist use. Ideal Skills and Experience: - Proficiency in PCB design software (e.g., Altium Designer, Eagle, KiCad). - Previous experience designing single-sided circuit boards. - Familiarity with designing for hobbyist electronics projects. - Ability to design for and integrate...

I'm seeking a skilled PCB circuit designer based in Delhi to design a double-layer PCB for video signal transmission and separation. This PCB will primarily serve in signal processing, so experience in designing PCBs for such applications is highly valued. Key Responsibilities: - Design a double-layer PCB with a focus on video signal transmission and separation. - Ensure the PCB is optimized for signal processing. Ideal Skills: - Expertise in double-layer PCB design. - Experience in the consumer electronics industry, particularly in video signal processing. - Proficiency in using PCB design software. - Strong attention to detail and ability to work to tight deadlines. If you are a professional PCB designer with a knack for signal processing, I wo...

...blocking the connection. To troubleshoot this, visit log @ :1Understand this warningAI Failed to load resource: the server responded with a status of 404 ()Understand this errorAI [2025-01-09T00:52:28.493Z] Error: There was an unhandled exception on the current circuit, so this circuit will be terminated. For more details turn on detailed exceptions by setting 'DetailedErrors: true' in '' or set ''. log @ :1Understand this errorAI [2025-01-09T00:52:28.497Z] Information: Connection disconnected. Uncaught (in promise) Error: Cannot send data if the connection

I'm looking for a stopwatch timer that counts the time a circuit is open. The timer needs to have a display counter using a Seven-segment display, and a reset function. This device is intended for personal use. Ideal skills and experience for the job include: - Experience in designing and building electronic timers. - Proficiency in working with Seven-segment displays. - Understanding of circuit design and timing mechanisms.

Projec...external ESP32 module. Button Functionality: A physical button will be used to cycle through the stored messages. Power Source: The watch should be powered by a rechargeable lithium-ion battery. Components: OLED display for showing messages. Button for navigation. Bluetooth communication. Deliverables: Fully functional watch prototype. Source code for both the watch and the external ESP32 module. Circuit diagrams and assembly instructions. Freelancer Skills Required: Embedded systems development. Experience with microcontrollers (ATtiny85, ESP32, etc.). Knowledge of Bluetooth communication. Proficiency in C++/Arduino programming. Hardware prototyping (OLED displays, buttons, power modules). Documentation skills. Budget and Timeline: Budget: 8k. Timeline: Deliver within ...

I'm in need of an engineering blueprint, specifically an electrical one focusing on wiring layout capable of providing professional engineer stamp of approval. Ideal skills and experience for the job include: - Proficiency in creating detailed electrical engineering blueprints - Experience with wiring layouts ...specifically an electrical one focusing on wiring layout capable of providing professional engineer stamp of approval. Ideal skills and experience for the job include: - Proficiency in creating detailed electrical engineering blueprints - Experience with wiring layouts specifically - Understanding of industry standards for safety and compliance - Ability to incorporate elements like load calculations, circuit designs, etc. into the layout - Strong attention to detai...

Looking for an Electronics Engineer We need a circuit designed to interface with an ESP32. The circuit should be capable of transmitting and receiving logic 1 and logic 0 commands via a two-wire current loop interface. It must support full-duplex communication, meaning it should also be able to receive responses. Logic Explanation: Based on the attached specifications: 1. Logic 0 ("Space"): Current: Between 0 mA (Minimum) and 2 mA (Maximum). 2. Logic 1 ("Mark"): Current: Between 42.75 mA (Minimum) and 47.25 mA (Maximum). The current loop operates at a nominal 45 mA ±5%. The voltage for the open-loop supply must be between 12V DC (Minimum) and 42V DC (Maximum). Requirements: The designed circuit must handle current regulation fo...

I'm seeking an engineer to design a simple circuit for a heated probe and console. The system must not exceed a temperature of about 130 degrees F. Key Features: - The console should utilize LED indicators for its interface. - The power source for both the probe and the console is a plug-in power adapter. - The console must include a temperature adjustment control feature. Ideal Skills: - Circuit design and engineering - Experience with temperature controlled systems - Proficiency in designing LED based interfaces

I'm in need of a professional who can help me source various electronic components for TV assembly. The components primarily include the display panel, circuit boards, and connectors and cables. Key Requirements: - Expertise in sourcing electronic components - Prior experience with sourcing parts for TV assembly is a plus - Ability to negotiate and secure cost-effective deals - Strong network with reliable suppliers - Good understanding of quality standards for electronic components

I am seeking a highly experienced circuit design engineer with expertise in digital and analog electronics, proficient in using Eagle for PCB design. The ideal candidate will have a strong background in signal conditioning, low-noise circuit design, and power management for compact, low-power applications. Familiarity with integrating multiple sensors, including PPG, glucose, HRV, and electrolytes, into electronic systems is a significant advantage. The role requires exceptional problem-solving skills, attention to detail, and the ability to deliver efficient, production-ready designs, including schematics, PCB layouts, and prototypes. If you excel in creating innovative circuit solutions and thrive in challenging projects, I would love to hear fro...

I need design & simulations for a 2wire & 3wire current loop transmitter using XTR115 . the sensor input is 0 - 24V ouput should be 4-20mA Key Requirements: Simulations : - I need circuit & simulation of the design in Altium or LTspice I am looking for someone who can complete this project ASAP, given the urgency. Please only apply if you have relevant experience and can deliver high-quality work quickly.

I need an expert freelancer to test and implement an IEC104 server for monitoring electrical components in my system. The server will specifically be tasked with overseeing transformers, circuit breakers, and power meters. Ideal Skills and Experience: - In-depth understanding and experience with IEC104 protocol - Background in monitoring electrical components - Proficient in server testing and implementation - Familiarity with transformers, circuit breakers and power meters - Excellent problem-solving skills and attention to detail

I need an experienced circuit analyst to review a simple, mixed-signal circuit diagram that uses transistors and provide suggestions for improvement. The task involves: - Analyzing the circuit diagram - Identifying potential issues or inefficiencies - Recommending clear, actionable solutions to optimize functionality This is a straightforward one-time task, ideal for a professional skilled in electronics or electrical engineering. If you have experience in circuit troubleshooting, particularly with transistors in mixed-signal circuits where component overheating is a concern, and can deliver quick, high-quality results, I’d love to hear from you.

...components on a copper strip-board for a USB powered torch light. The circuit involves a Capacitor, a diode, two resistors (10ohm) - but this is flexible depending on if the circuit can funcion , an LED, and a PTM. - The main issue lies in component arrangement on the strip-board, which has 10 rails. The USB, which serves as the power source, has four rails. - I have a partial schematic diagram of the circuit, but I'm unsure about the placement of some components. - Specifically, I need assistance with the PTM and power connection. Ideal skills and experience for the job include: - Proficiency in electronics and circuit design - Experience with strip-boards and USB powered circuits - Ability to interpret and work from a partial circuit ...

I need to have my Bosch Rexroth drive programmed. This will involve utilizing a closed circuit feedback loop for a pump control system. The pressure sensor will be used for the feedback loop, and the control algorithm will be a PID control. Key Requirements: - Programming of Bosch Rexroth drive - Implementation of closed circuit feedback loop - Use of pressure sensor for feedback - Application of PID control algorithm Hardware: - Please note that I already have the necessary hardware for this project. Ideal Skills and Experience: - Extensive experience with Bosch Rexroth drives - Strong knowledge of closed circuit feedback loops - Proficient in programming PID control algorithms - Familiarity with using pressure sensors in control systems - Prior experience in pum...

I need help with two circuit analysis problems regarding DC circuits, as shown in the provided figures. Tasks: 1. For the first circuit (FIGURE 1): - Calculate the value of the current through a given 11 V battery. - Calculate the power dissipated in three specific resistors (R1, R2 and R4). 2. For the second circuit (FIGURE 2): - Determine the current (i) flowing in a 30 Ω load using two different methods: a) Thévenin’s theorem b) The superposition theorem - Calculate the values of three inductors present in the circuit. - Calculate the complex form of the voltage across the load using any method. Requirements: - I need the answers typed in a word document file. - Detailed step-by-step solutions are required for ...