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Add Power Sensor component
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239 changes: 239 additions & 0 deletions docs/components/power-sensor/_index.md
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---
title: "Power Sensor Component"
linkTitle: "Power Sensor"
childTitleEndOverwrite: "Power Sensor"
weight: 70
no_list: true
type: "docs"
description: "A device that provides information about a robot's systems, including voltage, current, and power consumption."
tags: ["sensor", "components", "power sensor", "ina219", "ina226", "renogy"]
icon: "/icons/components/sensor.svg"
images: ["/icons/components/sensor.svg"]
# SME: #team-bucket
---

A power sensor is a device that reports measurements of the voltage, current and power consumption in your robot's system.
Integrate this into your robot's system to monitor its power levels.

## Configuration

For configuration information, click on your sensor’s model:

Model | Description <a name="model-table"></a>
----- | -----------
[`fake`](./fake/) | Digital power sensor for testing
[`ina219`](/components/sensor/power_ina219/) | [INA219](https://pdf1.alldatasheet.com/datasheet-pdf/view/249609/TI/INA219.html) current and power sensor
[`ina226`](./ina226/) | [INA226](https://www.ti.com/lit/ds/symlink/ina226.pdf?ts=1688994548364&ref_url=https%253A%252F%252Fwww.ti.com%252Fproduct%252Fde-de%252FINA226) current and power sensor
[`renogy`](/components/sensor/renogy/) | [Renogy](https://www.renogy.com/content/RSP200D/RSP200D%20G2%20Datasheet.pdf) solar charge controller

## Control your power sensor with Viam’s client SDK libraries

To get started using Viam's SDKs to connect to and control your robot, go to your robot's page on [the Viam app](https://app.viam.com), navigate to the **Code sample** tab, select your preferred programming language, and copy the sample code generated.

{{% snippet "show-secret.md" %}}

When executed, this sample code will create a connection to your robot as a client.
Then control your robot programmatically by adding API method calls as shown in the following examples.

These examples assume you have a power sensor called `"my_power_sensor"` configured as a component of your robot.
If your power sensor has a different name, change the `name` in the code.

Be sure to import the power sensor package for the SDK you are using:

{{< tabs >}}
{{% tab name="Python" %}}

```python
from viam.components.powersensor import powersensor
```

{{% /tab %}}
{{% tab name="Go" %}}

```go
import (
"go.viam.com/rdk/components/powersensor"
)
```

{{% /tab %}}
{{< /tabs >}}

## API

The power sensor component supports the following methods:

{{< readfile "/static/include/components/apis/power-sensor.md" >}}

### GetCurrent

Return the current of a specified device and whether it is AC or DC.

{{< tabs >}}
{{% tab name="Python" %}}

**Parameters:**

- `extra` [(Optional[Dict[str,Any]])](https://docs.python.org/library/typing.html#typing.Optional): Pass additional data and configuration options to the [RPC call](/appendix/glossary/#term-grpc).
- `timeout` [(Optional[float])](https://docs.python.org/3/library/typing.html#typing.Optional): Specify a time limit (in seconds) for how long `get_current` should wait for a response.

**Returns:**

- [(Tuple[float, bool])](https://docs.python.org/3/library/functions.html#float): A float representing the current reading in amps. A bool indicating whether the current is AC (True) or DC (False).

For more information, see the [Python SDK Docs](https://python.viam.dev/autoapi/viam/components/power_sensor/power_sensor/index.html#viam.components.power_sensor.power_sensor.PowerSensor.get_current).

```python
# Get the current reading from the power sensor
current, is_ac = await my_power_sensor.get_current()
print("The current is ", current, " A, Is AC: ", is_ac)
```

{{% /tab %}}
{{% tab name="Go" %}}

**Parameters:**

- `ctx` [Context](https://pkg.go.dev/context): Control the lifecycle of the operation by handling timeouts and managing cancellations.
- `extra`[(Optional[Dict[str, Any]])](https://docs.python.org/3/library/typing.html#typing.Optional): Pass additional data and configuration options to the [RPC call](/appendix/glossary/#term-grpc).

**Returns:**

- `float64`: The measurement of the current, represented as a 64-bit float number.
- `bool`: Indicate whether current is AC (True) or DC (False).
- `error`: Report any errors that might occur during operation. Successful operation will be `nil`.

For more information, see the [Go SDK Docs](https://pkg.go.dev/go.viam.com/rdk/components/powersensor#PowerSensor).

```go
// Create a power sensor instance
myPowerSensor, err := powersensor.FromRobot(robot, "my_power_sensor")
if err != nil {
logger.Fatalf("cannot get power sensor: %v", err)
}

// Get the current reading from device in amps
current, isAC, err := myPowerSensor.Current(context.Background(), nil)
```

{{% /tab %}}
{{< /tabs >}}

### GetVoltage

Return the voltage reading of a specified device and whether it is AC or DC.

{{< tabs >}}
{{% tab name="Python" %}}

**Parameters:**

- `extra`[(Optional[Dict[str, Any]])](https://docs.python.org/3/library/typing.html#typing.Optional): Pass additional data and configuration options to the [RPC call](/appendix/glossary/#term-grpc).
- `timeout`[(Optional[float])](https://docs.python.org/3/library/functions.html#float): Specify a time limit (in seconds) for how long `get_voltage` should wait for a response.

**Returns:**

- [(Tuple[float, bool])](https://docs.python.org/3/library/stdtypes.html): A float representing the current reading in amps. A bool indicating whether the voltage is AC (True) or DC (False).

For more information, see the [Python SDK Docs](https://python.viam.dev/autoapi/viam/components/power_sensor/power_sensor/index.html#viam.components.power_sensor.power_sensor.PowerSensor.get_voltage).

```Python
# Get the voltage reading from the power sensor
voltage, is_ac = await my_power_sensor.get_voltage()
print("The voltage is", voltage, "V, Is AC:", is_ac)
```

{{% /tab %}}
{{% tab name="Go" %}}

**Parameters:**

- `ctx` [Context](https://pkg.go.dev/context): Control the lifecycle of the operation by handling timeouts and managing cancellations.
- `extra`[(Optional[Dict[str, Any]])](https://docs.python.org/3/library/typing.html#typing.Optional): Pass additional data and configuration options to the [RPC call](/appendix/glossary/#term-grpc).

**Returns:**

- `float64`: The measurement of the voltage, represented as a 64-bit float number.
- `bool`: Indicate whether voltage is AC (True) or DC (False).
- `error`: Report any errors that might occur during operation. Successful operation will be `nil`.

For more information, see the [Go SDK Docs](https://pkg.go.dev/go.viam.com/rdk/components/powersensor#PowerSensor).

```Go
// Create a power sensor instance
myPowerSensor, err := powersensor.FromRobot(robot, "my_power_sensor")
if err != nil {
logger.Fatalf("cannot get power sensor: %v", err)
}

// Get the voltage from device in volts
voltage, isAC, err := myPowerSensor.Voltage(context.Background(), nil)
```

{{% /tab %}}
{{< /tabs >}}

### GetPower

Return the power reading in watts.

{{< tabs >}}
{{% tab name="Python" %}}

**Parameters:**

- `extra`[(Optional[Dict[str, Any]])](https://docs.python.org/3/library/typing.html#typing.Optional): Pass additional data and configuration options to the [RPC call](/appendix/glossary/#term-grpc).
- `timeout`[(Optional[float])](https://docs.python.org/3/library/functions.html#float): Specify a time limit (in seconds) for how long `get_power` should wait for a response.

**Returns:**

- `float`: The measurement of the power, represented as a float number.

For more information, see the [Python SDK Docs](https://python.viam.dev/autoapi/viam/components/power_sensor/power_sensor/index.html#viam.components.power_sensor.power_sensor.PowerSensor.get_power).

```Python
# Get the power reading from the power sensor
power = await my_power_sensor.get_power()
print("The power is", power, "Watts")
```

{{% /tab %}}
{{% tab name="Go" %}}

**Parameters:**

- `ctx` [Context](https://pkg.go.dev/context): Control the lifecycle of the operation by handling timeouts and managing cancellations.
- `extra`[(Optional[Dict[str, Any]])](https://docs.python.org/3/library/typing.html#typing.Optional): Pass additional data and configuration options to the [RPC call](/appendix/glossary/#term-grpc).

**Returns:**

- `float64`: The measurement of the power, represented as a 64-bit float number.
- `error`: Report any errors that might occur during operation. Successful operation will be `nil`.

For more information, see the [Go SDK Docs](https://pkg.go.dev/go.viam.com/rdk/components/powersensor#PowerSensor).

```Go
// Create a power sensor instance
myPowerSensor, err := powersensor.FromRobot(robot, "my_power_sensor")
if err != nil {
logger.Fatalf("cannot get power sensor: %v", err)
}

// Get the power measurement from device in watts
power, err := myPowerSensor.Power(context.Background(), nil)
```

{{% /tab %}}
{{< /tabs >}}

## Troubleshooting

You can find additional assistance in the [Troubleshooting section](/appendix/troubleshooting/).

You can also ask questions on the [Viam Community Slack](https://join.slack.com/t/viamrobotics/shared_invite/zt-1f5xf1qk5-TECJc1MIY1MW0d6ZCg~Wnw) and we will be happy to help.

## Next Steps

{{< cards >}}
{{% card link="/tutorials/projects/tipsy" %}}
{{< /cards >}}
40 changes: 40 additions & 0 deletions docs/components/power-sensor/fake.md
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---
title: "Configure a fake power sensor"
linkTitle: "fake"
weight: 10
type: "docs"
description: "Configure a fake power sensor to test software without the physical hardware."
tags: ["sensor", "power sensor"]
icon: "/icons/components/sensor.svg"
images: ["/icons/components/sensor.svg"]
# SME: #team-bucket
---

Use a `fake` power sensor to test implementing a power sensor component on your robot without any physical hardware.

Configure a `fake` power sensor to integrate into your robot:

{{< tabs name="Configure a Fake Power Sensor" >}}
{{% tab name="Config Builder" %}}

Navigate to the **Config** tab of your robot's page in [the Viam app](https://app.viam.com).
Click on the **Components** subtab and navigate to the **Create component** menu. Select the type `power_sensor`, then select the `fake` model. Name your sensor, and click **Create**.

{{<imgproc src="/components/power-sensor/fake-config-builder.png" resize="750x" declaredimensions=true alt="Fake power sensor configuration builder">}}

{{% /tab %}}
{{% tab name="JSON Template" %}}

```json {class="line-numbers linkable-line-numbers"}
{
"name": "<your-sensor-name>",
"type": "power_sensor",
"model": "fake",
"attributes": {}
}
```

{{% /tab %}}
{{< /tabs >}}

No attributes are available for `fake` power sensors.
56 changes: 56 additions & 0 deletions docs/components/power-sensor/ina219.md
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---
title: "Configure an INA219 power sensor"
linkTitle: "ina219"
weight: 70
draft: false
type: "docs"
description: "Configure an INA219 model sensor."
tags: ["sensor", "power sensor", "ina219"]
icon: "/icons/components/sensor.svg"
images: ["/icons/components/sensor.svg"]
# SME:
---

Configure an `INA219` power sensor to integrate into your robot:

{{< tabs name="Configure an INA219 Power Sensor" >}}
{{% tab name="Config Builder" %}}

Navigate to the **Config** tab of your robot's page in [the Viam app](https://app.viam.com).
Click on the **Components** subtab and navigate to the **Create component** menu. Select the type `power_sensor`, then select the `ina219` model. Name your sensor, and click **Create**.

{{<imgproc src="/components/power-sensor/ina219-config-builder.png" resize="900x" declaredimensions=true alt="ina219 power sensor configuration tab">}}

Edit and fill in the attributes as applicable.

{{% /tab %}}
{{% tab name="JSON Template" %}}

```json {class="line-numbers linkable-line-numbers"}
{
"components": [
{
"name": "<your-INA219-sensor-name>",
"type": "power_sensor",
"model": "INA219",
"attributes": {
"board": "<your-board-name>",
"i2c_bus": "<your-i2c-bus-name-on-board>"
},
"depends_on": []
}
]
}
```

{{% /tab %}}
{{% /tabs %}}

The following attributes are available for `INA219` sensors:

| Attribute | Type | Inclusion | Description |
| --------- | -----| --------- | ----------- |
| `i2c_bus` | integer | **Required** | The `name` of the [I<sup>2</sup>C bus](/components/board/#i2cs) that the sensor is connected to. |
| `i2c_address` | integer | Optional | The sensor's unique [I<sup>2</sup>C address](https://learn.adafruit.com/i2c-addresses/overview). <br>Default: `0x40`
| `max_current_amps` | number | Optional | The maximum current that the sensor can measure in amperes (A).
| `shunt_resistance` | number | Optional | The shunt resistance value of the sensor in Ohms (Ω).
53 changes: 53 additions & 0 deletions docs/components/power-sensor/ina226.md
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@@ -0,0 +1,53 @@
---
title: "Configure an INA226 power sensor"
linkTitle: "ina226"
weight: 10
type: "docs"
description: "Configure an INA226 power sensor to test software."
images: ["/icons/components/imu.svg"]
# SME:
---

Configure an `INA226` power sensor to integrate into your robot:

{{< tabs name="Configure an INA226 Power Sensor" >}}
{{% tab name="Config Builder" %}}

Navigate to the **Config** tab of your robot's page in [the Viam app](https://app.viam.com).
Click on the **Components** subtab and navigate to the **Create component** menu. Select the type `power_sensor`, then select the `ina226` model. Name your sensor, and click **Create**.

{{<imgproc src="/components/power-sensor/ina226-config-builder.png" resize="800x" declaredimensions=true alt="ina226 power sensor configuration tab ">}}

Edit and fill in the attributes as applicable.

{{% /tab %}}
{{% tab name="JSON Template" %}}

```json {class="line-numbers linkable-line-numbers"}
{
"components": [
{
"name": "<your-INA226-sensor-name>",
"type": "power_sensor",
"model": "INA226",
"attributes": {
"board": "<your-board-name>",
"i2c_bus": "<your-i2c-bus-name-on-board>"
},
"depends_on": []
}
]
}
```

{{% /tab %}}
{{% /tabs %}}

The following attributes are available for `INA226` sensors:

| Attribute | Type | Inclusion | Description |
| --------- | -----| --------- | ----------- |
| `i2c_bus` | integer | **Required** | The `name` of the [I<sup>2</sup>C bus](/components/board/#i2cs) that the sensor is connected to. |
| `i2c_address` | integer | Optional | Default: `0x40`. The sensor's unique [I<sup>2</sup>C address](https://learn.adafruit.com/i2c-addresses/overview). |
| `max_current_amps` | number | Optional | The maximum current that the sensor can measure in amperes (A).
| `shunt_resistance` | number | Optional | The shunt resistance value of the sensor in Ohms (Ω).
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