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Clarify Raspberry Pi low voltage warning

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Bonzi
2026-08-01 11:17:16 +00:00
parent 518ee028a3
commit 972deb93df
1 changed files with 9 additions and 7 deletions
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notes/first-test-drive.md
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@@ -34,7 +34,7 @@ tags:
| Area | Observation | Status |
|---|---|---|
| Power | Power bank reported low voltage | Investigate later |
| Power | Raspberry Pi desktop showed a low-voltage warning while powered by the power bank | Investigate later |
| ADB | Connection dropped during the drive | Investigate later |
| Speed | Readings were a few km/h low | Investigate later |
| Peak speed | Trip report missed the observed top speed | Investigate later |
@@ -49,12 +49,14 @@ tags:
## Detailed notes
### Power bank and low-voltage warning
### Raspberry Pi low-voltage warning while using the power bank
- The power bank showed a low-voltage alert.
- The Raspberry Pi showed a desktop-environment notification saying: **"Low voltage. Please check power supply."**
- This happened while the Pi was running from the power bank.
- The power bank itself did not report the warning.
- Possible relation to the Pi, the AWUS1900, Wi-Fi instability, or other USB hardware is unknown.
**Follow-up question:** Is the power bank providing stable and sufficient power under load?
**Follow-up question:** Is the power bank providing stable and sufficient power to the Raspberry Pi under load?
### ADB connection drops
@@ -89,7 +91,7 @@ tags:
**Follow-up questions:**
- Does the AWUS1900 reset when the power bank reports low voltage?
- Does the AWUS1900 reset when the Raspberry Pi reports low voltage while powered by the power bank?
- Do Wi-Fi disconnects occur at the same time as ADB and Android Auto disconnects?
- Is the built-in Pi Wi-Fi adapter still stable when the AWUS1900 drops?
@@ -193,7 +195,7 @@ The cause is unknown. The UI should continue to show battery values as unavailab
## English rewrite
- **Power bank:** Low-voltage alert.
- **Raspberry Pi:** The desktop environment showed a low-voltage warning saying, **"Low voltage. Please check power supply."** while the Pi was running from the power bank.
- **ADB connection dropped.**
- This was visible in the phone app and in the trip GPS data.
- **Speed was a few km/h off.**
@@ -227,7 +229,7 @@ The cause is unknown. The UI should continue to show battery values as unavailab
## Original notes in Danish
- Power bank = low voltage alert
- Raspberry Pi desktop environment showed a low-voltage warning ("Low voltage. Please check power supply") while running through the power bank
- ADB connection dropper ud
- Ses på telefon app, og trip GPS data
- Speed er få km/h off (65 -> 63-64 km/h)