From c38636e8aaabf62d3e3305bdb98a7dcaeccab43f Mon Sep 17 00:00:00 2001 From: Jim Bennett Date: Fri, 11 Jun 2021 16:16:36 -0700 Subject: [PATCH] Adding structure for project 6 and wio terminal distance sensor --- .../README.md | 2 +- .../wio-terminal/distance-sensor/.gitignore | 5 ++ .../distance-sensor/.vscode/extensions.json | 7 +++ .../distance-sensor/include/README | 39 ++++++++++++ .../wio-terminal/distance-sensor/lib/README | 46 +++++++++++++++ .../distance-sensor/platformio.ini | 16 +++++ .../wio-terminal/distance-sensor/src/main.cpp | 31 ++++++++++ .../wio-terminal/distance-sensor/test/README | 11 ++++ .../4-trigger-fruit-detector/pi-proximity.md | 2 +- .../wio-terminal-proximity.md | 59 +++++++++++++++++++ 6-consumer/README.md | 15 +++++ .../lessons/1-speech-recognition/README.md | 33 +++++++++++ .../1-speech-recognition/assignment.md | 9 +++ .../pi-configure-audio.md | 36 +++++++++++ .../1-speech-recognition/pi-speech-to-text.md | 5 ++ .../2-language-understanding/README.md | 33 +++++++++++ .../2-language-understanding/assignment.md | 9 +++ .../lessons/3-spoken-feedback/README.md | 33 +++++++++++ .../lessons/3-spoken-feedback/assignment.md | 9 +++ .../4-multiple-language-support/README.md | 33 +++++++++++ .../4-multiple-language-support/assignment.md | 9 +++ hardware.md | 3 +- 22 files changed, 442 insertions(+), 3 deletions(-) create mode 100644 4-manufacturing/lessons/4-trigger-fruit-detector/code-proximity/wio-terminal/distance-sensor/.gitignore create mode 100644 4-manufacturing/lessons/4-trigger-fruit-detector/code-proximity/wio-terminal/distance-sensor/.vscode/extensions.json create mode 100644 4-manufacturing/lessons/4-trigger-fruit-detector/code-proximity/wio-terminal/distance-sensor/include/README create mode 100644 4-manufacturing/lessons/4-trigger-fruit-detector/code-proximity/wio-terminal/distance-sensor/lib/README create mode 100644 4-manufacturing/lessons/4-trigger-fruit-detector/code-proximity/wio-terminal/distance-sensor/platformio.ini create mode 100644 4-manufacturing/lessons/4-trigger-fruit-detector/code-proximity/wio-terminal/distance-sensor/src/main.cpp create mode 100644 4-manufacturing/lessons/4-trigger-fruit-detector/code-proximity/wio-terminal/distance-sensor/test/README create mode 100644 6-consumer/lessons/1-speech-recognition/README.md create mode 100644 6-consumer/lessons/1-speech-recognition/assignment.md create mode 100644 6-consumer/lessons/1-speech-recognition/pi-configure-audio.md create mode 100644 6-consumer/lessons/1-speech-recognition/pi-speech-to-text.md create mode 100644 6-consumer/lessons/2-language-understanding/README.md create mode 100644 6-consumer/lessons/2-language-understanding/assignment.md create mode 100644 6-consumer/lessons/3-spoken-feedback/README.md create mode 100644 6-consumer/lessons/3-spoken-feedback/assignment.md create mode 100644 6-consumer/lessons/4-multiple-language-support/README.md create mode 100644 6-consumer/lessons/4-multiple-language-support/assignment.md diff --git a/2-farm/lessons/4-migrate-your-plant-to-the-cloud/README.md b/2-farm/lessons/4-migrate-your-plant-to-the-cloud/README.md index 107eb6a8..f06f1b6d 100644 --- a/2-farm/lessons/4-migrate-your-plant-to-the-cloud/README.md +++ b/2-farm/lessons/4-migrate-your-plant-to-the-cloud/README.md @@ -178,7 +178,7 @@ To use the Azure CLI, first it must be installed on your PC or Mac. az account set --subscription ``` - Replace `` with the Id of hte subscription you want to use. After running this command, re-run the command to list your accounts. You will see the `IsDefault` column will be marked as `True` for the subscription you have just set. + Replace `` with the Id of the subscription you want to use. After running this command, re-run the command to list your accounts. You will see the `IsDefault` column will be marked as `True` for the subscription you have just set. ### Task - create a resource group diff --git a/4-manufacturing/lessons/4-trigger-fruit-detector/code-proximity/wio-terminal/distance-sensor/.gitignore b/4-manufacturing/lessons/4-trigger-fruit-detector/code-proximity/wio-terminal/distance-sensor/.gitignore new file mode 100644 index 00000000..89cc49cb --- /dev/null +++ b/4-manufacturing/lessons/4-trigger-fruit-detector/code-proximity/wio-terminal/distance-sensor/.gitignore @@ -0,0 +1,5 @@ +.pio +.vscode/.browse.c_cpp.db* +.vscode/c_cpp_properties.json +.vscode/launch.json +.vscode/ipch diff --git a/4-manufacturing/lessons/4-trigger-fruit-detector/code-proximity/wio-terminal/distance-sensor/.vscode/extensions.json b/4-manufacturing/lessons/4-trigger-fruit-detector/code-proximity/wio-terminal/distance-sensor/.vscode/extensions.json new file mode 100644 index 00000000..0f0d7401 --- /dev/null +++ b/4-manufacturing/lessons/4-trigger-fruit-detector/code-proximity/wio-terminal/distance-sensor/.vscode/extensions.json @@ -0,0 +1,7 @@ +{ + // See http://go.microsoft.com/fwlink/?LinkId=827846 + // for the documentation about the extensions.json format + "recommendations": [ + "platformio.platformio-ide" + ] +} diff --git a/4-manufacturing/lessons/4-trigger-fruit-detector/code-proximity/wio-terminal/distance-sensor/include/README b/4-manufacturing/lessons/4-trigger-fruit-detector/code-proximity/wio-terminal/distance-sensor/include/README new file mode 100644 index 00000000..194dcd43 --- /dev/null +++ b/4-manufacturing/lessons/4-trigger-fruit-detector/code-proximity/wio-terminal/distance-sensor/include/README @@ -0,0 +1,39 @@ + +This directory is intended for project header files. + +A header file is a file containing C declarations and macro definitions +to be shared between several project source files. You request the use of a +header file in your project source file (C, C++, etc) located in `src` folder +by including it, with the C preprocessing directive `#include'. + +```src/main.c + +#include "header.h" + +int main (void) +{ + ... +} +``` + +Including a header file produces the same results as copying the header file +into each source file that needs it. Such copying would be time-consuming +and error-prone. With a header file, the related declarations appear +in only one place. If they need to be changed, they can be changed in one +place, and programs that include the header file will automatically use the +new version when next recompiled. The header file eliminates the labor of +finding and changing all the copies as well as the risk that a failure to +find one copy will result in inconsistencies within a program. + +In C, the usual convention is to give header files names that end with `.h'. +It is most portable to use only letters, digits, dashes, and underscores in +header file names, and at most one dot. + +Read more about using header files in official GCC documentation: + +* Include Syntax +* Include Operation +* Once-Only Headers +* Computed Includes + +https://gcc.gnu.org/onlinedocs/cpp/Header-Files.html diff --git a/4-manufacturing/lessons/4-trigger-fruit-detector/code-proximity/wio-terminal/distance-sensor/lib/README b/4-manufacturing/lessons/4-trigger-fruit-detector/code-proximity/wio-terminal/distance-sensor/lib/README new file mode 100644 index 00000000..6debab1e --- /dev/null +++ b/4-manufacturing/lessons/4-trigger-fruit-detector/code-proximity/wio-terminal/distance-sensor/lib/README @@ -0,0 +1,46 @@ + +This directory is intended for project specific (private) libraries. +PlatformIO will compile them to static libraries and link into executable file. + +The source code of each library should be placed in a an own separate directory +("lib/your_library_name/[here are source files]"). + +For example, see a structure of the following two libraries `Foo` and `Bar`: + +|--lib +| | +| |--Bar +| | |--docs +| | |--examples +| | |--src +| | |- Bar.c +| | |- Bar.h +| | |- library.json (optional, custom build options, etc) https://docs.platformio.org/page/librarymanager/config.html +| | +| |--Foo +| | |- Foo.c +| | |- Foo.h +| | +| |- README --> THIS FILE +| +|- platformio.ini +|--src + |- main.c + +and a contents of `src/main.c`: +``` +#include +#include + +int main (void) +{ + ... +} + +``` + +PlatformIO Library Dependency Finder will find automatically dependent +libraries scanning project source files. + +More information about PlatformIO Library Dependency Finder +- https://docs.platformio.org/page/librarymanager/ldf.html diff --git a/4-manufacturing/lessons/4-trigger-fruit-detector/code-proximity/wio-terminal/distance-sensor/platformio.ini b/4-manufacturing/lessons/4-trigger-fruit-detector/code-proximity/wio-terminal/distance-sensor/platformio.ini new file mode 100644 index 00000000..709f0a31 --- /dev/null +++ b/4-manufacturing/lessons/4-trigger-fruit-detector/code-proximity/wio-terminal/distance-sensor/platformio.ini @@ -0,0 +1,16 @@ +; PlatformIO Project Configuration File +; +; Build options: build flags, source filter +; Upload options: custom upload port, speed and extra flags +; Library options: dependencies, extra library storages +; Advanced options: extra scripting +; +; Please visit documentation for the other options and examples +; https://docs.platformio.org/page/projectconf.html + +[env:seeed_wio_terminal] +platform = atmelsam +board = seeed_wio_terminal +framework = arduino +lib_deps = + seeed-studio/Grove Ranging sensor - VL53L0X @ ^1.1.1 \ No newline at end of file diff --git a/4-manufacturing/lessons/4-trigger-fruit-detector/code-proximity/wio-terminal/distance-sensor/src/main.cpp b/4-manufacturing/lessons/4-trigger-fruit-detector/code-proximity/wio-terminal/distance-sensor/src/main.cpp new file mode 100644 index 00000000..ce4baf01 --- /dev/null +++ b/4-manufacturing/lessons/4-trigger-fruit-detector/code-proximity/wio-terminal/distance-sensor/src/main.cpp @@ -0,0 +1,31 @@ +#include +#include "Seeed_vl53l0x.h" + +Seeed_vl53l0x VL53L0X; + +void setup() +{ + Serial.begin(9600); + + while (!Serial) + ; // Wait for Serial to be ready + + delay(1000); + + VL53L0X.VL53L0X_common_init(); + VL53L0X.VL53L0X_high_accuracy_ranging_init(); +} + +void loop() +{ + VL53L0X_RangingMeasurementData_t RangingMeasurementData; + memset(&RangingMeasurementData, 0, sizeof(VL53L0X_RangingMeasurementData_t)); + + VL53L0X.PerformSingleRangingMeasurement(&RangingMeasurementData); + + Serial.print("Distance = "); + Serial.print(RangingMeasurementData.RangeMilliMeter); + Serial.println(" mm"); + + delay(1000); +} \ No newline at end of file diff --git a/4-manufacturing/lessons/4-trigger-fruit-detector/code-proximity/wio-terminal/distance-sensor/test/README b/4-manufacturing/lessons/4-trigger-fruit-detector/code-proximity/wio-terminal/distance-sensor/test/README new file mode 100644 index 00000000..b94d0890 --- /dev/null +++ b/4-manufacturing/lessons/4-trigger-fruit-detector/code-proximity/wio-terminal/distance-sensor/test/README @@ -0,0 +1,11 @@ + +This directory is intended for PlatformIO Unit Testing and project tests. + +Unit Testing is a software testing method by which individual units of +source code, sets of one or more MCU program modules together with associated +control data, usage procedures, and operating procedures, are tested to +determine whether they are fit for use. Unit testing finds problems early +in the development cycle. + +More information about PlatformIO Unit Testing: +- https://docs.platformio.org/page/plus/unit-testing.html diff --git a/4-manufacturing/lessons/4-trigger-fruit-detector/pi-proximity.md b/4-manufacturing/lessons/4-trigger-fruit-detector/pi-proximity.md index bf887291..254f23e9 100644 --- a/4-manufacturing/lessons/4-trigger-fruit-detector/pi-proximity.md +++ b/4-manufacturing/lessons/4-trigger-fruit-detector/pi-proximity.md @@ -89,7 +89,7 @@ Program the device. Distance = 151 mm ``` - The rangefinder is on the back of the sensor, so make sure you use hte correct side when measuring distance. + The rangefinder is on the back of the sensor, so make sure you use the correct side when measuring distance. ![The rangefinder on the back of the time of flight sensor pointing at a banana](../../../images/time-of-flight-banana.png) diff --git a/4-manufacturing/lessons/4-trigger-fruit-detector/wio-terminal-proximity.md b/4-manufacturing/lessons/4-trigger-fruit-detector/wio-terminal-proximity.md index f6e5a764..4ae6d24e 100644 --- a/4-manufacturing/lessons/4-trigger-fruit-detector/wio-terminal-proximity.md +++ b/4-manufacturing/lessons/4-trigger-fruit-detector/wio-terminal-proximity.md @@ -38,3 +38,62 @@ The Wio Terminal can now be programmed to use the attached time of flight sensor 1. Create a brand new Wio Terminal project using PlatformIO. Call this project `distance-sensor`. Add code in the `setup` function to configure the serial port. +1. Add a library dependency for the Seeed Grove time of flight distance sensor library to the projects `platformio.ini` file: + + ```ini + lib_deps = + seeed-studio/Grove Ranging sensor - VL53L0X @ ^1.1.1 + ``` + +1. In `main.cpp`, add the following below the existing include directives to declare an instance of the `Seeed_vl53l0x` class to interact with the time of flight sensor: + + ```cpp + #include "Seeed_vl53l0x.h" + + Seeed_vl53l0x VL53L0X; + ``` + +1. Add the following to the bottom of the `setup` function to initialize the sensor: + + ```cpp + VL53L0X.VL53L0X_common_init(); + VL53L0X.VL53L0X_high_accuracy_ranging_init(); + ``` + +1. In the `loop` function, read a value from the sensor: + + ```cpp + VL53L0X_RangingMeasurementData_t RangingMeasurementData; + memset(&RangingMeasurementData, 0, sizeof(VL53L0X_RangingMeasurementData_t)); + + VL53L0X.PerformSingleRangingMeasurement(&RangingMeasurementData); + ``` + + This code initializes a data structure to read data into, then passes it into the `PerformSingleRangingMeasurement` method where it will be populated with the distance measurement. + +1. Below this, write out the distance measurement, then delay for 1 second: + + ```cpp + Serial.print("Distance = "); + Serial.print(RangingMeasurementData.RangeMilliMeter); + Serial.println(" mm"); + + delay(1000); + ``` + +1. Build, upload and run this code. You will be able to see distance measurements with the serial monitor. Position objects near the sensor and you will see the distance measurement: + + ```output + Distance = 29 mm + Distance = 28 mm + Distance = 30 mm + Distance = 151 mm + ``` + + The rangefinder is on the back of the sensor, so make sure you use the correct side when measuring distance. + + ![The rangefinder on the back of the time of flight sensor pointing at a banana](../../../images/time-of-flight-banana.png) + +> 💁 You can find this code in the [code-proximity/wio-terminal](code-proximity/wio-terminal) folder. + +😀 Your proximity sensor program was a success! diff --git a/6-consumer/README.md b/6-consumer/README.md index 021b558b..09fa9331 100644 --- a/6-consumer/README.md +++ b/6-consumer/README.md @@ -1,5 +1,20 @@ # Consumer IoT - build a smart voice assistant +The fod has been grown, driven to a processing plant, sorted for quality, sold in the store and now it's time to cook! One of the core pieces of any kitchen is a timer. Initially these started as simple hour glasses - your food was cooked when all the sand trickled down into the bottom bulb. They then went clockwork, then electric. + +The latest iterations are now part of our smart devices. In kitchens all throughout the world you'll head chefs shouting "Hey Siri - set a 10 minute timer", or "Alexa - cancel my bread timer". No longer do you have to walk back to the kitchen to check on a timer, you can do it from your phone, or a call out across the room. + +In these 4 lessons you'll learn how to build a smart timer, using AI to recognize your voice, understand what you are asking for, and reply with information about your timer. You'll also add support for multiple languages. + +> 💁 These lessons will use some cloud resources. If you don't complete all the lessons in this project, make sure you [Clean up your project](../clean-up.md). + ## Topics +1. [Recognize speech with an IoT device](./lessons/1-speech-recognition/README.md) +1. [Understand language](./lessons/2-language-understanding/README.md) +1. [Provide spoken feedback](./lessons/3-spoken-feedback/README.md) +1. [Support multiple languages](./lessons/4-multiple-language-support/README.md) + ## Credits + +All the lessons were written with ♥️ by [Jim Bennett](https://GitHub.com/JimBobBennett) diff --git a/6-consumer/lessons/1-speech-recognition/README.md b/6-consumer/lessons/1-speech-recognition/README.md new file mode 100644 index 00000000..7afd6db2 --- /dev/null +++ b/6-consumer/lessons/1-speech-recognition/README.md @@ -0,0 +1,33 @@ +# Recognize speech with an IoT device + +Add a sketchnote if possible/appropriate + +![Embed a video here if available](video-url) + +## Pre-lecture quiz + +[Pre-lecture quiz](https://brave-island-0b7c7f50f.azurestaticapps.net/quiz/33) + +## Introduction + +In this lesson you will learn about + +In this lesson we'll cover: + +* [Thing 1](#thing-1) + +## Thing 1 + +--- + +## 🚀 Challenge + +## Post-lecture quiz + +[Post-lecture quiz](https://brave-island-0b7c7f50f.azurestaticapps.net/quiz/34) + +## Review & Self Study + +## Assignment + +[](assignment.md) diff --git a/6-consumer/lessons/1-speech-recognition/assignment.md b/6-consumer/lessons/1-speech-recognition/assignment.md new file mode 100644 index 00000000..da157d5c --- /dev/null +++ b/6-consumer/lessons/1-speech-recognition/assignment.md @@ -0,0 +1,9 @@ +# + +## Instructions + +## Rubric + +| Criteria | Exemplary | Adequate | Needs Improvement | +| -------- | --------- | -------- | ----------------- | +| | | | | diff --git a/6-consumer/lessons/1-speech-recognition/pi-configure-audio.md b/6-consumer/lessons/1-speech-recognition/pi-configure-audio.md new file mode 100644 index 00000000..761a8b73 --- /dev/null +++ b/6-consumer/lessons/1-speech-recognition/pi-configure-audio.md @@ -0,0 +1,36 @@ +## find devices + +aplay -l + +arecord -l + +## configure defaults + +sudo nano /usr/share/alsa/alsa.conf + +defaults.pcm.card 1 + +speaker-test -t wav -c 2 + +## test + +arecord --format=S16_LE --duration=5 --rate=16000 --file-type=raw out.raw +aplay --format=S16_LE --rate=16000 out.raw + +## Create service + +az group create --name smart-timer --location westus2 + +az cognitiveservices account create \ + --name smart-timer \ + --resource-group smart-timer \ + --kind SpeechServices \ + --sku F0 \ + --location westus2 \ + --yes + +copy endpoint for token issuer + +az cognitiveservices account keys list \ + --name smart-timer \ + --resource-group smart-timer \ No newline at end of file diff --git a/6-consumer/lessons/1-speech-recognition/pi-speech-to-text.md b/6-consumer/lessons/1-speech-recognition/pi-speech-to-text.md new file mode 100644 index 00000000..88fd388f --- /dev/null +++ b/6-consumer/lessons/1-speech-recognition/pi-speech-to-text.md @@ -0,0 +1,5 @@ +## capture audio + +sudo apt-get install libportaudio0 libportaudio2 libportaudiocpp0 portaudio19-dev + +pip3 install pyaudio \ No newline at end of file diff --git a/6-consumer/lessons/2-language-understanding/README.md b/6-consumer/lessons/2-language-understanding/README.md new file mode 100644 index 00000000..00dcb0ac --- /dev/null +++ b/6-consumer/lessons/2-language-understanding/README.md @@ -0,0 +1,33 @@ +# Understand language + +Add a sketchnote if possible/appropriate + +![Embed a video here if available](video-url) + +## Pre-lecture quiz + +[Pre-lecture quiz](https://brave-island-0b7c7f50f.azurestaticapps.net/quiz/33) + +## Introduction + +In this lesson you will learn about + +In this lesson we'll cover: + +* [Thing 1](#thing-1) + +## Thing 1 + +--- + +## 🚀 Challenge + +## Post-lecture quiz + +[Post-lecture quiz](https://brave-island-0b7c7f50f.azurestaticapps.net/quiz/34) + +## Review & Self Study + +## Assignment + +[](assignment.md) diff --git a/6-consumer/lessons/2-language-understanding/assignment.md b/6-consumer/lessons/2-language-understanding/assignment.md new file mode 100644 index 00000000..da157d5c --- /dev/null +++ b/6-consumer/lessons/2-language-understanding/assignment.md @@ -0,0 +1,9 @@ +# + +## Instructions + +## Rubric + +| Criteria | Exemplary | Adequate | Needs Improvement | +| -------- | --------- | -------- | ----------------- | +| | | | | diff --git a/6-consumer/lessons/3-spoken-feedback/README.md b/6-consumer/lessons/3-spoken-feedback/README.md new file mode 100644 index 00000000..da6a602b --- /dev/null +++ b/6-consumer/lessons/3-spoken-feedback/README.md @@ -0,0 +1,33 @@ +# Provide spoken feedback + +Add a sketchnote if possible/appropriate + +![Embed a video here if available](video-url) + +## Pre-lecture quiz + +[Pre-lecture quiz](https://brave-island-0b7c7f50f.azurestaticapps.net/quiz/33) + +## Introduction + +In this lesson you will learn about + +In this lesson we'll cover: + +* [Thing 1](#thing-1) + +## Thing 1 + +--- + +## 🚀 Challenge + +## Post-lecture quiz + +[Post-lecture quiz](https://brave-island-0b7c7f50f.azurestaticapps.net/quiz/34) + +## Review & Self Study + +## Assignment + +[](assignment.md) diff --git a/6-consumer/lessons/3-spoken-feedback/assignment.md b/6-consumer/lessons/3-spoken-feedback/assignment.md new file mode 100644 index 00000000..da157d5c --- /dev/null +++ b/6-consumer/lessons/3-spoken-feedback/assignment.md @@ -0,0 +1,9 @@ +# + +## Instructions + +## Rubric + +| Criteria | Exemplary | Adequate | Needs Improvement | +| -------- | --------- | -------- | ----------------- | +| | | | | diff --git a/6-consumer/lessons/4-multiple-language-support/README.md b/6-consumer/lessons/4-multiple-language-support/README.md new file mode 100644 index 00000000..719a3035 --- /dev/null +++ b/6-consumer/lessons/4-multiple-language-support/README.md @@ -0,0 +1,33 @@ +# Support multiple languages + +Add a sketchnote if possible/appropriate + +![Embed a video here if available](video-url) + +## Pre-lecture quiz + +[Pre-lecture quiz](https://brave-island-0b7c7f50f.azurestaticapps.net/quiz/33) + +## Introduction + +In this lesson you will learn about + +In this lesson we'll cover: + +* [Thing 1](#thing-1) + +## Thing 1 + +--- + +## 🚀 Challenge + +## Post-lecture quiz + +[Post-lecture quiz](https://brave-island-0b7c7f50f.azurestaticapps.net/quiz/34) + +## Review & Self Study + +## Assignment + +[](assignment.md) diff --git a/6-consumer/lessons/4-multiple-language-support/assignment.md b/6-consumer/lessons/4-multiple-language-support/assignment.md new file mode 100644 index 00000000..da157d5c --- /dev/null +++ b/6-consumer/lessons/4-multiple-language-support/assignment.md @@ -0,0 +1,9 @@ +# + +## Instructions + +## Rubric + +| Criteria | Exemplary | Adequate | Needs Improvement | +| -------- | --------- | -------- | ----------------- | +| | | | | diff --git a/hardware.md b/hardware.md index a66999e3..e2059829 100644 --- a/hardware.md +++ b/hardware.md @@ -50,6 +50,7 @@ These are specific to using the Raspberry Pi, and are not relevant to using the or * [USB Speakerphone](https://www.amazon.com/USB-Speakerphone-Conference-Business-Microphones/dp/B07Q3D7F8S/ref=sr_1_1?dchild=1&keywords=m0&qid=1614647389&sr=8-1) * [Grove Sunlight sensor](https://www.seeedstudio.com/Grove-Sunlight-Sensor.html) +* [Grove button](https://www.seeedstudio.com/Grove-Button.html) ## Sensors and actuators @@ -60,7 +61,7 @@ Most of the sensors and actuators needed are used by both the Arduino and Raspbe * [Grove capacitive soil moisture sensor](https://www.seeedstudio.com/Grove-Capacitive-Moisture-Sensor-Corrosion-Resistant.html) * [Grove relay](https://www.seeedstudio.com/Grove-Relay.html) * [Grove GPS (Air530)](https://www.seeedstudio.com/Grove-GPS-Air530-p-4584.html) -* [Grove - Time of flight Distance Sensor](https://www.seeedstudio.com/Grove-Time-of-Flight-Distance-Sensor-VL53L0X.html) +* [Grove Time of flight Distance Sensor](https://www.seeedstudio.com/Grove-Time-of-Flight-Distance-Sensor-VL53L0X.html) ## Optional hardware