pH/EC Meter Prototype Completion

مقتطف من الإعلان

I already have the schematic, PCB layout, and BOM for a handheld pH / EC meter, but the board has never been powered on. I now need the design taken all the way from desk-review to a fully working, calibrated prototype. Here is what I’m expecting: you will start by combing through the design files to spot any signal-integrity or component issues that could compromise measurement accuracy. From there, please revise the board so the LCD module and both sensor inputs are properly routed and…

النص الكامل متاح على Freelancer.com. الإعلان صالح حتى 13 نوفمبر 2026.