Hourly Rate: Not Sure
| Duration: Not Sure
| Posted: 4h, 50m ago | Ends: 14d, 19h |
You will need to specify wire diameter, number of turns, inductance, insulation, etc. for a transistor used in a power brick. The example circuit the transistor will go in will be supplied.
Fixed Price: $20 - $60
| Posted: 7h, 19m ago | Ends: 14d, 16h |
I have 3 phase 480v electrical into my property, I need to run power out to my site 850 feet away. I'd like to have a 100-200amp service of 1 phase power at the end of the 850ft run. This will be direct burial cable and I would need the EE to look up the Oregon or County specs to make sure the cable selected is suitable. In summary: 1. Size wire according to load and length and 3-phase. 2. Select wire from a discounted source ideally, like ebay 3. Size transformer for 3phase to 1phase 4. Select transformer.
Fixed Price: $25 - $150
| Posted: 11h, 26m ago | Ends: 14d, 12h |
Hello All elance i need some one familiar with concept design for automotive or any one can handle this project I would like some to designed a new electric tractor trailer with some of my patent ideas here is the drawing that i have, If you have question about the drawings you can ask me anything. The drawing is the battery and function of how the electric truck and trailer body will work with all wheel drive function in the undercarriage. I also would like it if you would add the function of a dimmed led tv screen underneath the transparent solar panel siding with the support of the light weight battery.
Hourly Rate: Not Sure
| Duration: 4-6 months
| Posted: 14h, 0m ago | Ends: 14d, 9h |
Job Description: We are looking for a versatile and experienced engineer and designer of electronics. From prototypes to full production, to work with a small team to help us create the hardware part of our products. This individual must be well organized, technically proficient, independent, creative, and accommodating. Skills required: - Must be able to efficiently produce accurate engineering documentation - Excellence in soldering, mechanical assembly, and rework for design prototypes. - Professional courtesy and communications, especially in dealing with customers. - Experience with video/audio streaming, WebRTC, wireless connection, Bluetooth, motion detection is a plus. - Experience with OpenCV will make you our hero. We are looking for a long-term relationship starting with this project. We are also expecting a first-class hardware developers.
Fixed Price: Not Sure
| Posted: 17h, 38m ago | Ends: 14d, 6h |
The objective is to design and fabricate one or several circuit board(s) capable of collecting multiple vital signs (ECG, SpO2, Temperature). The design can be a new design or one that is based on an existing reference design if the requirements can be met. If a reference design is used, schematics and demo software/firmware will be provided by the freelancer. The requirements are: - Capable of measuring ECG, pulse oximeter (SpO2), and temperature - Use an embedded 32-bit microprocessor with DSP functionality - Data collection of ECG and SpO2 must be simultaneous or with a low, deterministic latency (<1ms) between ECG/SpO2 samples - Sampling of ECG/SpO2 should occur at a rate higher than 100Hz with a good signal-to-noise ratio - Communication over USB/RS232 to a PC host - Onboard storage for at least 10 seconds of ECG/SpO2 data - Powered by a +5V DC power supply. Preferably a USB port. - A touch or infrared sensor for temperature - Firmware/software program demonstrating the fu...