08 - Wi-Fi while SD records

Prerequisite: Stage 7 accepted. Firmware: breadboard-record-2ch. Status: NOT TESTED.

Sequence overview | Exact contacts | 3D assembly

Add and test

Read the per-device Wi-Fi password once from the USB console at the bench (no person attached) and keep it private, then remove USB. First repeat a short baseline without a receiver, then a 60-minute SD+Wi-Fi trial. Interrupt and reconnect laptop reception. Compare common record identities, codes and timestamps; never fill missing preview data silently.

Acceptance checks

• 8-live: 60 min; only EMG1/2; explicit preview losses; independently audit original SD counters/CRC/END/stop and confirm no unexplained saved loss
• 8-disconnect: Disconnect/reconnect produces visible preview gaps; compare identities codes timestamps and stop/error indications without filling missing data

Send for review

• Original SD file AND laptop raw archive
• receiver log/quality
• disconnect times
• laptop OS/software version
• both converted outputs
• new rail/noise captures under wireless load

A smooth dashboard is not an acceptance test. Wireless loss must be visible, while independently checking that SD did not lose records.

Continuous regression

Before power: inspect the changed wiring against the contact table and photograph it. After power: remeasure every connected rail at the load, verify no unexpected heat/current, and rerun the last accepted diagnostic. Repeat earlier affected tests whenever a supply, cable, firmware or grounding connection changes. Record failures and repairs; retain the previous accepted evidence.

If the gate fails

Stop acquisition and remove power before changing wiring. Disconnect only the last-added module and restore the last accepted configuration. Repeat its test. If it now fails, check the shared supply/ground and changed connections before replacing components. Never change multiple modules at once to chase a fault.

Results

Fill measurements.csv; retain raw instrument files alongside screenshots. Outcome starts NOT TESTED. Include units, uncertainty, instrument model/settings, source voltage/load, firmware hash and filenames. Mark unmet criteria FAIL; missing evidence PENDING. Submit the whole stage folder, including failures. A completeness check is not engineering approval.

Stage files

• New wires: exact endpoints copied from the existing wiring table; keep earlier accepted wires. Power-isolation and qualification instructions above override connection order within a stage.
• Probe contacts: available exact probe locations. An empty table means use the instrument instructions above.
• Fixture parts: staged discrete fixture components from the existing BOM; this is not a complete procurement list for modules, tools or consumables.
• Measurements and submission metadata.