Looking for a smart pH/EC meter PCBA designer
Budget / Salary$1,500–3,000
TypeFreelance project
LocationRemote
Posted1 hour ago
I am looking for an electronic technician/engineer who has hands-on experience building a smart pH meter to review, revise existing pH meter design.
The pH meter contains 2 pH sensors, 1 EC sensor, and a high resolution display to display data and graphics.
The product will send the pH/EC data to a smart phone app, which will display additional information.
The app has been already designed. The PCB has been designed but may need revision
QUESTIONS
- Which pH or EC instruments have you built, and can you show or give references?
- How would you deal with input leakage and noise in a high-impedance pH circuit?
- How do they approach EC excitation and temperature compensation?
- Can you review and revise an existing PCB (not just design from scratch)?
Candidates with AI supported responses are automatic eliminated from the project.
The pH meter contains 2 pH sensors, 1 EC sensor, and a high resolution display to display data and graphics.
The product will send the pH/EC data to a smart phone app, which will display additional information.
The app has been already designed. The PCB has been designed but may need revision
QUESTIONS
- Which pH or EC instruments have you built, and can you show or give references?
- How would you deal with input leakage and noise in a high-impedance pH circuit?
- How do they approach EC excitation and temperature compensation?
- Can you review and revise an existing PCB (not just design from scratch)?
Candidates with AI supported responses are automatic eliminated from the project.
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