Board Diagnostics
Component-level fault isolation, schematic tracing, electrical measurements, soldering, and repair.
Kweisi John
Electronics Engineering
Hardware testing, component-level troubleshooting, circuit analysis, PCB design, and embedded hardware.
Technical Areas
Electronics
The site covers four connected disciplines: diagnostics, testing, circuit analysis, and PCB development.
Hardware Testing
Functional testing, repeatability checks, measurement records, fault reproduction, and test documentation.
Circuit Analysis
Schematics, datasheets, power paths, signal paths, component behavior, and instrument selection.
PCB Development
Requirements, component selection, schematic capture, PCB layout, bring-up planning, and revision control.
Current PCB Project
Bluetooth Environmental Sensor Node
USB-powered BLE hardware for temperature, humidity, ambient light, and barometric pressure sensing.
- Platform
- Low-voltage BLE sensor board
- Sensors
- Temperature, humidity, ambient light, and barometric pressure
- Current phase
- Schematic and PCB development
- Next phase
- Fabrication, assembly, bring-up, and physical testing
Portfolio
Hardware Projects
Schematics, PCB files, test plans, measurements, and project status.
Bluetooth Environmental Sensor Node
Design phaseUSB-powered BLE hardware for temperature, humidity, ambient light, and barometric pressure sensing.
Project purpose
A complete low-voltage sensor platform for PCB design, embedded hardware, design-for-test, and documented validation.
Current focus
Requirements, circuit architecture, component selection, schematic capture, PCB planning, and test planning.
Services
Electronics Test & Prototype Support
Low-voltage diagnostics, repair, assembly, rework, functional testing, and documentation with a defined scope and written limits.
Low-voltage board diagnostics + repair
Bench-level fault isolation and component repair for low-voltage electronics with a clear symptom, safe access, and a defined scope.
PCB assembly + rework
Prototype assembly, component replacement, and documented board modifications performed from client-supplied files and change instructions.
Functional hardware testing
Execution of client-supplied test procedures and requirements with organized measurements, observations, and repeatable result records.
Writing
Technical Writing
Circuit analysis, troubleshooting, hardware testing, and PCB development.
Designed Is Not Tested
Designed, simulated, fabricated, measured, and validated describe different evidence. Hardware work gets more trustworthy when those states stay separate.
Read essayWhat Repair Teaches Design
Component-level troubleshooting changes the questions you ask while designing a board: where will I measure, what will fail, and how will the next person know?
Read essayContact
Project Inquiries
For board diagnostics, PCB assembly and rework, functional hardware testing, technical documentation, or content partnerships, send the project details by email.
Contact Kweisi John