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Update Battery usermod documentation 

Improved wiring, installation and calibration instructions.

Example screenshots added.

Minor grammar improvements.

Heading visual consistency improved.

Improved vertical separation between sections
(separator lines added).

Thankyou!
pull/3968/head
Adam Matthews 2024-05-11 13:34:35 +01:00
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@ -6,53 +6,78 @@
Enables battery level monitoring of your project.
For this to work, the positive side of the (18650) battery must be connected to pin `A0` of the d1 mini/esp8266 with a 100k Ohm resistor (see [Useful Links](#useful-links)).
If you have an ESP32 board, connect the positive side of the battery to ADC1 (GPIO32 - GPIO39)
<p align="center">
<img width="500" src="assets/battery_info_screen.png">
<p align="left">
<img width="700" src="assets/battery_info_screen.png">
</p>
<br>
## ⚙️ Features
- 💯 Displays current battery voltage
- 💯 Displays current battery voltage
- 🚥 Displays battery level
- 🚫 Auto-off with configurable Threshold
- 🚫 Auto-off with configurable threshold
- 🚨 Low power indicator with many configuration possibilities
<br><br>
## 🎈 Installation
define `USERMOD_BATTERY` in `wled00/my_config.h`
| **Option 1** | **Option 2** |
|--------------|--------------|
| In `wled00/my_config.h`<br>Add the line: `#define USERMOD_BATTERY`<br><br>[Example: my_config.h](assets/installation_my_config_h.png) | In `platformio_override.ini` (or `platformio.ini`)<br>Under: `build_flags =`, add the line: `-D USERMOD_BATTERY`<br><br>[Example: platformio_override.ini](assets/installation_platformio_override_ini.png) |
### Example wiring
<br><br>
<p align="center">
<img width="300" src="assets/battery_connection_schematic_01.png">
</p>
## 🔌 Example wiring
### Define Your Options
- (see [Useful Links](#useful-links)).
<table style="width: 100%; table-layout: fixed;">
<tr>
<!-- Column for the first image -->
<td style="width: 50%; vertical-align: bottom;">
<img width="300" src="assets/battery_connection_schematic_01.png" style="display: block;">
<p><strong>ESP8266</strong><br>
With a 100k Ohm resistor, connect the positive<br>
side of the battery to pin `A0`.</p>
</td>
<!-- Column for the second image -->
<td style="width: 50%; vertical-align: bottom;">
<img width="250" src="assets/battery_connection_schematic_esp32.png" style="display: block;">
<p><strong>ESP32</strong> (+S2, S3, C3 etc...)<br>
Use a voltage divider (two resistors of equal value).<br>
Connect to ADC1 (GPIO32 - GPIO39). GPIO35 is Default.</p>
</td>
</tr>
</table>
<br><br>
## Define Your Options
| Name | Unit | Description |
| ----------------------------------------------- | ----------- |-------------------------------------------------------------------------------------- |
| `USERMOD_BATTERY` | | define this (in `my_config.h`) to have this usermod included wled00\usermods_list.cpp |
| `USERMOD_BATTERY_MEASUREMENT_PIN` | | defaults to A0 on ESP8266 and GPIO35 on ESP32 |
| `USERMOD_BATTERY_MEASUREMENT_INTERVAL` | ms | battery check interval. defaults to 30 seconds |
| `USERMOD_BATTERY_{TYPE}_MIN_VOLTAGE` | v | minimum battery voltage. default is 2.6 (18650 battery standard) |
| `USERMOD_BATTERY_{TYPE}_MAX_VOLTAGE` | v | maximum battery voltage. default is 4.2 (18650 battery standard) |
| `USERMOD_BATTERY_{TYPE}_TOTAL_CAPACITY` | mAh | the capacity of all cells in parallel summed up |
| `USERMOD_BATTERY_{TYPE}_CALIBRATION` | | offset / calibration number, fine tune the measured voltage by the microcontroller |
| `USERMOD_BATTERY` | | Define this (in `my_config.h`) to have this usermod included wled00\usermods_list.cpp |
| `USERMOD_BATTERY_MEASUREMENT_PIN` | | Defaults to A0 on ESP8266 and GPIO35 on ESP32 |
| `USERMOD_BATTERY_MEASUREMENT_INTERVAL` | ms | Battery check interval. defaults to 30 seconds |
| `USERMOD_BATTERY_{TYPE}_MIN_VOLTAGE` | v | Minimum battery voltage. default is 2.6 (18650 battery standard) |
| `USERMOD_BATTERY_{TYPE}_MAX_VOLTAGE` | v | Maximum battery voltage. default is 4.2 (18650 battery standard) |
| `USERMOD_BATTERY_{TYPE}_TOTAL_CAPACITY` | mAh | The capacity of all cells in parallel summed up |
| `USERMOD_BATTERY_{TYPE}_CALIBRATION` | | Offset / calibration number, fine tune the measured voltage by the microcontroller |
| Auto-Off | --- | --- |
| `USERMOD_BATTERY_AUTO_OFF_ENABLED` | true/false | enables auto-off |
| `USERMOD_BATTERY_AUTO_OFF_THRESHOLD` | % (0-100) | when this threshold is reached master power turns off |
| `USERMOD_BATTERY_AUTO_OFF_ENABLED` | true/false | Enables auto-off |
| `USERMOD_BATTERY_AUTO_OFF_THRESHOLD` | % (0-100) | When this threshold is reached master power turns off |
| Low-Power-Indicator | --- | --- |
| `USERMOD_BATTERY_LOW_POWER_INDICATOR_ENABLED` | true/false | enables low power indication |
| `USERMOD_BATTERY_LOW_POWER_INDICATOR_PRESET` | preset id | when low power is detected then use this preset to indicate low power |
| `USERMOD_BATTERY_LOW_POWER_INDICATOR_THRESHOLD` | % (0-100) | when this threshold is reached low power gets indicated |
| `USERMOD_BATTERY_LOW_POWER_INDICATOR_DURATION` | seconds | for this long the configured preset is played |
| `USERMOD_BATTERY_LOW_POWER_INDICATOR_ENABLED` | true/false | Enables low power indication |
| `USERMOD_BATTERY_LOW_POWER_INDICATOR_PRESET` | preset id | When low power is detected then use this preset to indicate low power |
| `USERMOD_BATTERY_LOW_POWER_INDICATOR_THRESHOLD` | % (0-100) | When this threshold is reached low power gets indicated |
| `USERMOD_BATTERY_LOW_POWER_INDICATOR_DURATION` | seconds | For this long the configured preset is played |
All parameters can be configured at runtime via the Usermods settings page.
<br>
**NOTICE:** Each Battery type can be pre-configured individualy (in `my_config.h`)
| Name | Alias | `my_config.h` example |
@ -60,62 +85,85 @@ All parameters can be configured at runtime via the Usermods settings page.
| Lithium Polymer | lipo (Li-Po) | `USERMOD_BATTERY_lipo_MIN_VOLTAGE` |
| Lithium Ionen | lion (Li-Ion) | `USERMOD_BATTERY_lion_TOTAL_CAPACITY` |
<br><br>
## 🔧 Calibration
The calibration number is a value that is added to the final computed voltage after it has been scaled by the voltage multiplier.
It fine-tunes the voltage reading so that it more closely matches the actual battery voltage, compensating for inaccuracies inherent in the voltage divider resistors or the ESP's ADC measurements.
Set calibration either in the Usermods settings page or at compile time in `my_config.h` or `platformio_override.ini`.
It can be either a positive or negative number.
<br><br>
## ⚠️ Important
- Make sure you know your battery specifications! All batteries are **NOT** the same!
- Example:
Make sure you know your battery specifications! All batteries are **NOT** the same!
| Your battery specification table | | Options you can define |
| :-------------------------------- |:--------------- | :---------------------------- |
| Capacity | 3500mAh 12,5 Wh | |
| Minimum capacity | 3350mAh 11,9 Wh | |
Example:
| Your battery specification table | | Options you can define |
| --------------------------------- | --------------- | ----------------------------- |
| Capacity | 3500mAh 12.5Wh | |
| Minimum capacity | 3350mAh 11.9Wh | |
| Rated voltage | 3.6V - 3.7V | |
| **Charging end voltage** | **4,2V ± 0,05** | `USERMOD_BATTERY_MAX_VOLTAGE` |
| **Discharge voltage** | **2,5V** | `USERMOD_BATTERY_MIN_VOLTAGE` |
| **Charging end voltage** | **4.2V ± 0.05** | `USERMOD_BATTERY_MAX_VOLTAGE` |
| **Discharge voltage** | **2.5V** | `USERMOD_BATTERY_MIN_VOLTAGE` |
| Max. discharge current (constant) | 10A (10000mA) | |
| max. charging current | 1.7A (1700mA) | |
| ... | ... | ... |
| .. | .. | .. |
Specification from: [Molicel INR18650-M35A, 3500mAh 10A Lithium-ion battery, 3.6V - 3.7V](https://www.akkuteile.de/lithium-ionen-akkus/18650/molicel/molicel-inr18650-m35a-3500mah-10a-lithium-ionen-akku-3-6v-3-7v_100833)
Specification from: [Molicel INR18650-M35A, 3500mAh 10A Lithium-ion battery, 3.6V - 3.7V](https://www.akkuteile.de/lithium-ionen-akkus/18650/molicel/molicel-inr18650-m35a-3500mah-10a-lithium-ionen-akku-3-6v-3-7v_100833)
<br><br>
## 🌐 Useful Links
- https://lazyzero.de/elektronik/esp8266/wemos_d1_mini_a0/start
- https://arduinodiy.wordpress.com/2016/12/25/monitoring-lipo-battery-voltage-with-wemos-d1-minibattery-shield-and-thingspeak/
<br><br>
## 📝 Change Log
2024-05-11
- Documentation updated
2024-04-30
- integrate factory pattern to make it easier to add other / custom battery types
- update readme
- Integrate factory pattern to make it easier to add other / custom battery types
- Update readme
2023-01-04
- basic support for LiPo rechargeable batteries ( `-D USERMOD_BATTERY_USE_LIPO`)
- improved support for esp32 (read calibrated voltage)
- corrected config saving (measurement pin, and battery min/max were lost)
- various bugfixes
- Basic support for LiPo rechargeable batteries (`-D USERMOD_BATTERY_USE_LIPO`)
- Improved support for ESP32 (read calibrated voltage)
- Corrected config saving (measurement pin, and battery min/max were lost)
- Various bugfixes
2022-12-25
- added "auto-off" feature
- added "low-power-indication" feature
- added "calibration/offset" field to configuration page
- added getter and setter, so that user usermods could interact with this one
- update readme (added new options, made it markdownlint compliant)
- Added "auto-off" feature
- Added "low-power-indication" feature
- Added "calibration/offset" field to configuration page
- Added getter and setter, so that user usermods could interact with this one
- Update readme (added new options, made it markdownlint compliant)
2021-09-02
- added "Battery voltage" to info
- added circuit diagram to readme
- added MQTT support, sending battery voltage
- minor fixes
- Added "Battery voltage" to info
- Added circuit diagram to readme
- Added MQTT support, sending battery voltage
- Minor fixes
2021-08-15
- changed `USERMOD_BATTERY_MIN_VOLTAGE` to 2.6 volt as default for 18650 batteries
- Changed `USERMOD_BATTERY_MIN_VOLTAGE` to 2.6 volt as default for 18650 batteries
- Updated readme, added specification table
2021-08-10