Circuit Design Jobs

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Hourly - Intermediate ($$) - Est. Time: Less than 1 week, 10-30 hrs/week - Posted
Hi! I need to find someone to build an electronic circuit/ hardware gadget. I need a bicycle speedometer with Arduino ( analog circuit design mainly). It will be the project for a Technical Summer camp and this will be the model and the report type that students will have to submit so it has to be perfect. All the designs and instructions are here: Please shot me a message or email if you are interested and know how to do an amazing work!
Skills: Circuit Design Electronic Design Electronics Integrated Circuits
Fixed-Price - Expert ($$$) - Est. Budget: $400 - Posted
We have a newly designed PCB board without embedded firmware. The board has (3 x FLASH ICs, capacitive TOUCH screen, MicroSD, Ethernet, power management for battery and POE, interface for WiFi or GSM module, NFC Mifare … etc.) we’re using Renesas MCU Rx Family (RX62N) – part number R5F562N8BDBG. For embedded software, we’re using Segger RTOS and we already did build a full operating firmware for another PCB board using almost same parts (modules). However, our electronic engineer has changed the interface Pins between the MCU and the modules (NFC IC, MicroSD, IC Flash, … etc.) which is using the following interfaces (SPI, UART, I2C, and GPIO). We need to reconfigure our libraries (SPI library, UART library … etc.) to work with the new board. Because we don’t have enough SPI and I2C interfaces in the MCU, we may need to use soft SPI and I2C. the following is list of the interfaces need to be configured/written to let the firmware work with the new board: - SDRAM IC interface - MMC Memory Card IC (SPI interface) - Capacitive Touch (I2C interface) - Serial Flash IC x 3 (all in one SPI interface with chip select pin) - EPROM IC (I2C interface) - LED Driver IC - RTC IC (I2C interface) - Configure 6 UARTS to communicate with other modules. - ADC for battery level. - RFID IC (SPI Interface) - Buzzer, Relay, LED, etc. - HID IC (UART Interface) - USB Host interface - POE IC (AS1834) I2C interface
Skills: Circuit Design C Computer Engineering Electrical engineering
Hourly - Entry Level ($) - Est. Time: More than 6 months, Less than 10 hrs/week - Posted
We are looking for an extremely self-motivated engineer, technician or hobbyist with experience in hardware soldering and prototyping. Individuals with experience working with sensors (accelerometer) integration to microcontrollers on a PCB board a plus! Individuals who thrive under tight deadlines and constantly evolving nature of the design requirements would do well in the role.
Skills: Circuit Design Eagle Microcontroller Programming PCB Design
Fixed-Price - Expert ($$$) - Est. Budget: $2,000 - Posted
A) Mechanical Constraints/Geometry Board Dimensions: The control board should meet the geometric constraints as defined. Geometry of the circuit board need to accommodate the concentric circular cut out inside the control board geometry. B) Connector for the control board Geometry: The connector can be square/rectangular in shape. The mating part for the connector can be mated with connector in only one manner/direction. The height of the connector need to be less than equal to 0.25”. If that is not achievable then the max. height should be 0.5”. Connector Availability: Readily available connector (example from Molex, 3M etc. – TBD) – choice will be dictated by cost of the connector Number of pins: 5 (4 inputs and 1 output) Alternatively: No Connector on the board with wires soldered directly to the board. How much does this impact pricing? If the number of pins increase, it would be potentially more cost effective to adopt the approach of a connector than soldered wires. C) Control Board Operation Control Voltage: 0-5 V and PWM signal. Optional: 4-20 mA signal (optional) – dip switch Total number of Inputs: 4 (Supply Voltage range (10 V-38 V), Common Ground, Control Voltage (0-5 V), Motor Direction of Rotation-F/R). Discuss:+5.0V supply from board: power supply for speed control potentiometer and so the customer does not require a separate voltage source for controls. Total number of Outputs: 1 (Tach Out) – Pulse per rev, signal options available Motor Normal Operating Current Range: 0 – 4 amps Motor Max. Current / startup current: 4.5 amps Maximum electronic component temperature (ex: driver chip): max. 125 C, TBD RPM range: 500 rpm - 4000 rpm @ given speed and given torque Feedback: Open Loop Control with selectable closed loop control (RPM fluctuations are within 1 rpm of set point, ± 1 RPM) Set point RPM Fluctuations at constant load: Within 1 rpm of set point, Tolerance ± 1 RPM Motor control scheme: 0 – 5VDC PWM control signal linearly mapped to 500-4000 RPM speed. (Discuss on Open loop and closed loop with Control Resources) D) Control Board Intelligent Protection Over current protection: The control board shuts itself down if current exceeds 4.5 amps (Optional 3.5 amps). Reset current? Over Voltage and Under Voltage Protection If speed control is not required, supply voltage can be used in lieu of control voltage. Supply voltage acts as 5 V signal (10V-38V) Thermal shutdown: Design includes thermal shutdown at 125°C. Power to be cycled after cool down below 100°C to restart Fusing: Yes E) Regulatory/Environmental Operating Pump: -20 °C to 125 °C, 95% RH EMC/EMI: To be designed with best practices RoHS Compliant: yes Safety Standards: Designed to IEC standard 60950 Assembly Standards: Built to current IPC-A-610
Skills: Circuit Design Electrical engineering Integrated Circuits PCB Design
Fixed-Price - Intermediate ($$) - Est. Budget: $100 - Posted
Looking for an analog circuit designer to improve current schematic design and create an Eagle PCB file for a simple rechargeable BLE bracelet with a switch (no accelerometers, heart rate sensors, etc., only a BLE module, switch, and rechargable IC with battery). The project and further use will be explained upon application. This is a one time job as of right now. Applicant should be experienced with analog circuit design and be familiar with most recent releases in components for wearables.
Skills: Circuit Design Analog Electronics Eagle Electrical engineering
Hourly - Entry Level ($) - Est. Time: 3 to 6 months, 10-30 hrs/week - Posted
The Role: we’re looking to hire someone with great talent and experience to assemble online team of (2-4) electrical engineers and work closely with them and manage the over all project. Responsibility: Write online job postings and making decisions about hiring online team members Setting up goals and communicate our design vision Create tasks and assign tasks with deadlines to team members Follow up closely with engineers, suppliers to achieve the best possible product in terms of craftsmanship, cost, and engineering will staying as close to the design vision as possible. Create 15min scrum meeting everyday via Skype with team members to make sure everything is on track Solution and improvements oriented with great attention to details Collaborate with the fabrication team to complete prototypes when necessary
Skills: Circuit Design Altium Designer AutoCAD Bluetooth
Hourly - Entry Level ($) - Est. Time: 3 to 6 months, 10-30 hrs/week - Posted
We are a start-up working on building true wireless earbuds with a capsule that charges the earbuds wirelessly. At this stage of the development we have all the engineering docs of the product but more improvement is required, on the charging system and a few other things so we are able to start the mass-production. We are looking to hire Electrical engineer to work with our team to fix the charging issue and a few other things. more details will be shared after we hire.
Skills: Circuit Design Electrical Drawing Electrical engineering Electronic Design
Fixed-Price - Entry Level ($) - Est. Budget: $500 - Posted
Looking for few Electrical engineers who have experience of working with AutoCAD Electrical design software. The design process is: 1. Client gives the design drafters an IO list, instrument list, BOM, load list and they will put together the initial single line drawing, drive schematics and IO schematics. 2. The Client engineers will then review the drawings at each level.
Skills: Circuit Design AutoCAD Electrical Drawing Electrical engineering
Fixed-Price - Intermediate ($$) - Est. Budget: $100 - Posted
i need a Blue tooth motion controller to be built to work on mobile platform (android) Connection type is blue tooth and or dongle you must provide 1. Gerber File 2. Boom List 3. Prototype 4. Program file and method. 5. app 6. schematics
Skills: Circuit Design Android Arduino Bluetooth