Electrical Engineering Jobs

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Hourly - Expert ($$$) - Est. Time: Less than 1 month, Less than 10 hrs/week - Posted
We are looking to develop a system to read animal tags from long range (3m). We are looking for someone with experience with low frequency RFID to help to develop the system. We are looking to keep the cost of hardware as low as possible. Please get in touch if you think you could help. Thankyou.
Skills: Electrical engineering Electronic Design RFID
Fixed-Price - Entry Level ($) - Est. Budget: $50 - Posted
In altium, layout a board. Overall, should be 100mm x 90mm. The 100mm board width is key parameter. length is slightly flexible. The board uses a Sparkfun brand Arduino Pro Micro - 5V/16MHz (P/N DEV-12640) to control a stepper motor driver, a piezo buzzer, and two relays (1. '510 relay,' controls a 30v buck; 2. 'valve relay,' controls a 12v solenoid valve), . board connections and key components: -stepper driver (no part number - not on board) - arduino D2, D3, D4 and GR should connect to STP/DIR/ENA/GR of stepper driver via 8-pin plug receptacle -510 relay (P/N G5NB-1A4-5VDC) - arduino D5+GR -valve relay (P/N G6L-1P 5VDC) - arduino D6+GR -piezo (P/N PT-3529PQ) - arduino D7+GR -8-pin plug receptacle (P/N 20020110-H081A01LF) connects 4X stepper driver leads (step, dir, ena, ground), 2X 12v solenoid valve power leads, and 2X 30v buck output power leads. ***plug receptacle should be centered on the board's 100mm axis and overhang the board edge by ~5mm.*** -4-pin screw terminal block (P/N 20020316-H041B01LF) connects 2X 12v power leads and +/- 30v power leads. please check attached gerbers for reference design. reference design was using an arduino uno. need this done in 24 hours or less. deliverables are schematic, altium/eagle files, gerbers.
Skills: Electrical engineering Altium Designer Arduino Circuit Design
Hourly - Intermediate ($$) - Est. Time: 3 to 6 months, 30+ hrs/week - Posted
Our company are developing automation smart home with Arduino, Raspberry pi, other peripherals. We have already developed the Website front-end for integrating with devices. We are going to use wifi, bluetooth protocol to communicate with our server. Candidates must have much experience with Python/Arduino/C/AWS. Please write "FE34" and share your similar experiences with me when you bid. (DO NOT apply from India.) Thanks.
Skills: Electrical engineering Amazon Web Services Arduino C
Hourly - Intermediate ($$) - Est. Time: Less than 1 month, 10-30 hrs/week - Posted
Hello, My company is developing a battery powered, heating clothing product. We are looking to hire a battery consultant to help with the following: 1) Understand different battery chemistries 2) Understand basic aspects of powering the devices 3) Help the team select appropriate battery technology and design features for the device 4) Provide assistance regarding selection of a battery design firm 5) Provide assistance and feedback regarding battery design
Skills: Electrical engineering
Fixed-Price - Intermediate ($$) - Est. Budget: $50 - Posted
1. A code that can read at least 2 analog signals separately, with no more than a few hundredths of a second delay. 2. A code that able to send an Analog Out (AO) signal as a synchronous 60Hz signal. This is for the control frequency of the Inverter when the grid is out, meaning a reference frequency is required. Can send out an AO simultaneously while the Arduino Mega is running through its code loop to monitor the system. The Mega is capable of that; of a 60Hz AO continuously. To top it all off that microprocessor will have to continuously communicate with the Mega, so it knows when to turn on that AO signal.
Skills: Electrical engineering Arduino Computer Engineering