Interpret I²C address/write/read frames and validate pull-up voltage compatibility.
Guided setup
Select I²C at 100 kHz.nEnter address and data bytes.nDecode START, address, direction, data and STOP.nCompare a 5 V board and a 3.3 V sensor module.
Expected observations
7-bit address is separated from the R/W bit.nPull-ups define bus HIGH voltage.nEvery addressed byte requires an ACK/NACK decision in real capture.
Checkpoints
Check
Expected
Evidence
Address
0x3C recognised as 7-bit device address
Decoder outputnBus voltage
Fault injection
Fault
Symptom
Corrective action
No ACK
Wrong address, power or pull-ups
Scan safely and verify railsnStuck LOW
Generate, measure, decode
Virtual Hardware Bench Pro
Use one reusable browser bench for signal generation, virtual measurement, protocol decoding and electrical board-to-module compatibility checks. All calculations run locally.
