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Electrical Drawing Jobs

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Fixed-Price - Est. Budget: $ 250 Posted
I need a simple circuit & PCB designed for a constant current DC (4.2v 18650 Battery Source) LED Driver. The circuit will run 2 LEDs. I will provide the LED specs to the bidders privately. The circuit must be very compact and efficient (maximize battery life). Deliverables will include: 1. Schematic (PDF) 2. PCB Design Source Files (including exported STEP file of PCB & Components) 3. Component BOM (with sourcing references) 4. All files necessary to submit design to a PCB Prototyping Vendor in USA for production I will provide further details regarding PCB format/shape as well as further details to the winning bidder. This is an extremely simple circuit (very few components are required) and shouldn't take more than a few hours work for the right candidate.
Fixed-Price - Est. Budget: $ 20 Posted
"I have a dream..." I want to build an electronic board for a smart home project. I need digital inputs (for buttons, dry-contact), digital relay outputs (230V, 16A), and some basic logic (like a way to communicate with the board via MODBUS registers for example, and get inputs when button pressed and change register value to make a light ON or OFF). If you know about logic, electronics, PCB design, etc. - I'd happy to hear your insights about making such a board. Also, I still don't have an idea of how can we design that board on your place, and have it working at last - on my place. I'd be glad to hear good ideas for that. (designing it, making it, putting on all components, and seeing it at work..) Thanks.