https://github.com/phts/lvl-1
Firmware of PHTS LVL-1 device
https://github.com/phts/lvl-1
arduino phts-electronics phts-lvl-1
Last synced: about 2 months ago
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Firmware of PHTS LVL-1 device
- Host: GitHub
- URL: https://github.com/phts/lvl-1
- Owner: phts
- Created: 2024-11-06T20:57:28.000Z (over 1 year ago)
- Default Branch: master
- Last Pushed: 2025-10-02T11:24:29.000Z (8 months ago)
- Last Synced: 2025-10-02T12:38:36.305Z (8 months ago)
- Topics: arduino, phts-electronics, phts-lvl-1
- Language: C++
- Homepage: https://oshwlab.com/phts/lvl-1
- Size: 1.36 MB
- Stars: 0
- Watchers: 1
- Forks: 0
- Open Issues: 0
-
Metadata Files:
- Readme: README.md
Awesome Lists containing this project
README
# PHTS LVL-1
Features:
- Use ultrasonic sensor to measure distance
- Show level on the big fancy indicator
- Send levels and logs to [szambo.tsaryk.com] via Wi-Fi
- 24/7 monitoring
- Remote control via internet
## Firmware
Consists of 2 modules: [Arduino Nano](./arduino) and [NodeMCU V3](./nodemcu).
## Hardware
- Arduino Nano\*
- NodeMCU V3\*
- Ultrasonic sensor: HC-SR04\* or AJ-SR04M\*
- Analog meter 0-5V
- Buttons/LEDs/etc
## Design
### Schematic diagram
Hosted on: [OSHWLab/phts/lvl-1](https://oshwlab.com/phts/lvl-1).
### Deployment diagram
[szambo.tsaryk.com]: https://github.com/phts/szambo.tsaryk.com
## Usage
### Indication
| State | LED | Meter | Description |
| ------- | ---------------------------------- | ------------------------------------------------------------------- | -------------------------------------------------------------------- |
| Normal | `______________` (constantly off) | Actual level | Normally operational device |
| Warning | `**************` (constantly on) | Actual level | Level is reaching the maximum |
| Busy | `*______*______` (slowly blinking) | - Starting up: progress bar (number on `%` bar)
- Busy: not used | The device is starting up or performing an action |
| Failure | `*_*_*_*_*_*_*_` (fast blinking) | Error code (number on `m³` bar) | Operation failure. See the error code description in the table below |
#### Errors
| Code | Type | Description |
| ---- | --------- | ------------------------------------ |
| 1 | Fatal | Ultrasonic sensor failure |
| 2 | Temporary | NodeMCU module communication failure |
| 3 | Temporary | Wi-Fi connection failure |
| 4 | Temporary | Unexpected HTTP response |
- `Fatal` — will be indicated constantly until the failure is gone
- `Temporary` — will be hidden after 1 minute and back to the previous state