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GPIOViewer Arduino Library to see live GPIO Pins on ESP32 boards

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- FUNDING.yml
- - gpioviewer.ino
  - sketch.yaml
- - .gitignore
  - platformio.ini
- gpio_viewer.h
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AGENTS.md
gpio_viewer.ino
keywords.txt
library.properties
LICENSE
README.md
sketch.yaml

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# GPIOViewer Arduino Library to see live GPIO Pins on ESP32 boards

**Transforms the way you troubleshoot your microcontroller projects**. 
<a href="https://www.buymeacoffee.com/thelastoutpostworkshop" target="_blank">
<img src="https://www.buymeacoffee.com/assets/img/custom_images/orange_img.png" alt="Buy Me A Coffee">
</a>

## Youtube Tutorial

[<img src="https://github.com/thelastoutpostworkshop/images/blob/main/GPIO%20Viewer.png" width="300">](https://youtu.be/UxkOosaNohU)
[<img src="https://github.com/thelastoutpostworkshop/images/blob/main/GPIOViewer%20Latest%20Features.png" width="300">](https://youtu.be/JJzRXcQrl3I)

## Installation

### Installation Arduino IDE (Version 2)

> ℹ️ Make sure you have the [latest ESP32 boards](https://github.com/espressif/arduino-esp32)
> by Espressif Systems in your Board Manager

- Install the **GPIOViewer Library with the Arduino IDE Library Manager** or Download the [latest stable release](https://github.com/thelastoutpostworkshop/gpio_viewer/releases/latest) and install the library in the Arduino IDE : `Sketch > Include Library > Add ZIP Library...`
- Install [ESPAsyncWebServer](https://github.com/ESP32Async/ESPAsyncWebServer) using the Arduino IDE Library Manager
- Install the the [Async TCP](https://github.com/ESP32Async/AsyncTCP) using the Arduino IDE Library Manager.

### Installation VSCode + PlatformIO

> ℹ️ GPIOViewer requires Arduino-ESP32 core **3.x or newer**. PlatformIO's official `espressif32` platform currently uses Arduino-ESP32 core 2.x, even when it is up to date. Use the core-3-compatible `pioarduino` platform below.

Add (or change) the following in your `platformio.ini` file. Replace `<your-esp32-board>` with your board's PlatformIO board ID (for example, `esp32dev`):

```
[env:your_board]
platform = https://github.com/pioarduino/platform-espressif32/releases/download/stable/platform-espressif32.zip
board = <your-esp32-board>
framework = arduino

lib_deps =
    https://github.com/ESP32Async/ESPAsyncWebServer.git
    https://github.com/ESP32Async/AsyncTCP.git
    https://github.com/thelastoutpostworkshop/gpio_viewer.git
```

After changing the platform, run **PlatformIO: Clean** and build the project again so PlatformIO downloads the new platform. Every Arduino sketch also requires both a `setup()` and a `loop()` function, even when `loop()` is empty.

## Usage

> ℹ️ You can also get examples provided with the library in the Arduino IDE through the menu `File > Examples > GPIOViewer` 
> ℹ️ You only need to include the library, declare the GPIOViewer and call begin() at the end of your setup, and that's it!

```c
#include <gpio_viewer.h> // Must me the first include in your project
GPIOViewer gpio_viewer;

void setup()
{
  Serial.begin(115200);

// Comment the next line, If your code aleady include connection to Wifi in mode WIFI_STA (WIFI_AP and WIFI_AP_STA are not supported)
  gpio_viewer.connectToWifi("Your SSID network", "Your WiFi Password");
  // gpio_viewer.setPort(5555);   // You can set the http port, if not set default port is 8080

// Your own setup code start here

// Must be at the end of your setup
  // gpio_viewer.setSamplingInterval(25); // You can set the sampling interval in ms, if not set default is 100ms
  // gpio_viewer.setSkipPeripheralPins(false); // Default true: skip I2C/SPI/UART pins owned by peripherals
  gpio_viewer.begin();
}
```

> ℹ️ The default HTTP port is **8080** and default sampling interval is **100ms** 
> ℹ️ By default, GPIOViewer skips pins owned by active I2C/SPI/UART peripherals (ESP32 core v3+). Use **setSkipPeripheralPins(false)** to monitor them anyway. 
> ℹ️ Wifi must be in mode WIFI_STA (WIFI_AP and WIFI_AP_STA are not supported) 
> ℹ️ The **GPIOViewer** application supports **mDNS**. If available on your network, you can access it at **http://gpioviewer.local:8080** (with the port number used in a **setPort()**). If mDNS is unavailable/blocked, use the **IP address URL** printed on the serial monitor (with the port number used in a **setPort()**).

## GPIO Supported

- Digital
- Analog
- PWM
- ADC

## Library Size

- The GPIOViewer Library adds 50 KB to your projects.
- No worries! All the assets (ex. board images) of the web application are loaded from github pages and don't add to the size of your projects.

## Espressif Arduino ESP32 Core Compatibility

- The Espressif ESP32 Arduino Core that is installed in your system will need to be v3.0.0 or greater, in order for GPIO viewer to compile properly.
- If you want support for the Arduino Core v2.x, use version 1.6.3 of the GPIOViewer library.

## Performance

- Ensure you have a strong Wifi signal with a good transfer rate. 25ms sampling interval works great on Wifi 6 with 125 Mbps.
- If you get "ERROR: Too many messages queued" on the Serial Monitor, this means the data is not read fast enough by the web application. The data will still be displayed, but with some latency. Reduce the sampling interval or try to improve your Wifi performance.

## Contributors

Contributors are welcomed! If you want to submit pull requests, [here is how you can do it](https://docs.github.com/en/get-started/exploring-projects-on-github/contributing-to-a-project).

## Troubleshooting

### Last tested to be working on :

- v3.3.11 [ESP32 Arduino Core](https://github.com/espressif/arduino-esp32)
- v3.5.0 [Async TCP](https://github.com/ESP32Async/AsyncTCP)
- v3.12.0 [ESP Async WebServer](https://github.com/ESP32Async/ESPAsyncWebServer)

### Conflicts with pin function detection on some boards

Since version 1.5.6, the library detects pin functions like ADC and Touch, this has been causing problems on some boards, like the XiaoESP32-S3-Sense.
You can disable pin detection by adding this define before including the library :

```C++
#define NO_PIN_FUNCTIONS
#include <gpio_viewer.h>
```

### Code not compiling

If your code don't compile, **before submitting an issue:**

Try placing this header file after all other includes:

```C++
#include <gpio_viewer.h>
```

- Compile with the [latest stable release](https://github.com/thelastoutpostworkshop/gpio_viewer/releases/latest) of the GPIOViewer Library **and** with the [latest ESP32 boards](https://github.com/espressif/arduino-esp32)
- See also this [solved issue](https://github.com/thelastoutpostworkshop/gpio_viewer/issues/116)

### GPIOViewer running

If GPIOViewer is running and your are experiencing problems in the web application, **before submitting an issue:**

- Make sure you are using the [latest stable release](https://github.com/thelastoutpostworkshop/gpio_viewer/releases/latest) of the GPIOViewer Library
- Clear your browser cache data and refresh the window in your browser

## ESP32 Boards Supported

> ℹ️ You can use the "Generic View" in the GPIO Web Application to see GPIO pin activites live even if your board image is not listed 
> ℹ️ You can also request an ESP32 board image addition by [creating a new issue](https://github.com/thelastoutpostworkshop/gpio_viewer/issues).

| Description | Image | Pinout |
| ------------------------- | ------------------------------------------------------------------------------------------------------------------------------------------------------------------- | -------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------- |
| AZ Delivery NodeMCU ESP32 | ! <img src="https://github.com/thelastoutpostworkshop/microcontroller_devkit/blob/main/gpio_viewer_1_5/devboards_images/AZ-Delivery-NodeMCU-ESP32.png" width="100"> | <img src="https://raw.githubusercontent.com/thelastoutpostworkshop/images/main/AZ-Delivery-NodeMCU-ESP32-p%C3%AEnout.png" width="100"> |
| DFROBOT Beetle ESP32-C6 | ! <img src="https://github.com/thelastoutpostworkshop/microcontroller_devkit/blob/main/gpio_viewer_1_5/devboards_images/DFROBOT_Beetle_ESP32-C6.png" width="100"> | <img src="https://raw.githubusercontent.com/thelastoutpostworkshop/images/main/DFROBOT_Beetle_ESP32-C6_pinout.png" width="100"> |
| ESP32 NodeMCU 32S | ! <img src="https://github.com/thelastoutpostworkshop/microcontroller_devkit/blob/main/gpio_viewer_1_5/devboards_images/ESP32-NodeMCU-32S.png" width="100"> | <img src="https://raw.githubusercontent.com/thelastoutpostworkshop/images/main/ESP32-NODEMCU-32S-pinout.jpg" width="100"> |
| ESP32 VROOM 32D (38 pins) | ! <img src="https://github.com/thelastoutpostworkshop/microcontroller_devkit/blob/main/gpio_viewer_1_5/devboards_images/ESP32-VROOM-32D.png" width="100"> | <img src="https://docs.espressif.com/projects/esp-idf/en/latest/esp32/_images/esp32-devkitC-v4-pinout.png" width="100"> |
| ESP32 VROOM 32D (38 pins) | ! <img src="https://github.com/thelastoutpostworkshop/microcontroller_devkit/blob/main/gpio_viewer_1_5/devboards_images/ESP32-VROOM-32D.png" width="100"> | <img src="https://docs.espressif.com/projects/esp-idf/en/latest/esp32/_images/esp32-devkitC-v4-pinout.png" width="100"> |
| ESP32 VROOM 32D (30 pins) | ! <img src="https://github.com/thelastoutpostworkshop/microcontroller_devkit/blob/main/gpio_viewer_1_5/devboards_images/ESP32-VROOM-32D-30pins.png" width="100"> | <img src="https://raw.githubusercontent.com/AchimPieters/esp32-homekit-camera/master/Images/ESP32-30PIN-DEVBOARD.png" width="100"> |
| ESP32 D1 R32 | ! <img src="https://github.com/thelastoutpostworkshop/microcontroller_devkit/blob/main/gpio_viewer_1_5/devboards_images/ESP32_D1_R32.png" width="100"> | <img src="https://ito-iot.jp/sbc/WeMosD1R32-pinout.png" width="100"> |
| ESP32-CAM | ! <img src="https://github.com/thelastoutpostworkshop/microcontroller_devkit/blob/main/gpio_viewer_1_5/devboards_images/ESP32-CAM.png" width="100"> | <img src="https://i0.wp.com/randomnerdtutorials.com/wp-content/uploads/2020/03/ESP32-CAM-pinout-new.png?quality=100&strip=all&ssl=1" width="100"> |
| ESP32-C3 Super Mini | ! <img src="https://github.com/thelastoutpostworkshop/microcontroller_devkit/blob/main/gpio_viewer_1_5/devboards_images/ESP32-C3-Super-Mini.png" width="100"> | <img src="https://europe1.discourse-cdn.com/arduino/original/4X/8/0/f/80f07e53b7ddd448a8ac00608dd82acb5611a201.jpeg" width="100"> |
| ESP32 C3 Wroom-02 | ! <img src="https://github.com/thelastoutpostworkshop/microcontroller_devkit/blob/main/gpio_viewer_1_5/devboards_images/esp32-C3-Wroom-02.png" width="100"> | <img src="https://m.media-amazon.com/images/S/aplus-media-library-service-media/a80e998c-f2b4-4c4a-9ee7-d97ede61e14c.__CR0,0,970,600_PT0_SX970_V1___.jpg" width="100"> |
| ESP32-C5 DevKit1 | ! <img src="https://github.com/thelastoutpostworkshop/microcontroller_devkit/blob/main/gpio_viewer_1_5/devboards_images/ESP32-C5-DevKitC-1.png" width="100"> | <img src="https://raw.githubusercontent.com/thelastoutpostworkshop/images/refs/heads/main/esp32-c5-devkitc-1-pin-layout.png" width="100"> |
| ESP32-C6 DevKitM | ! <img src="https://github.com/thelastoutpostworkshop/microcontroller_devkit/blob/main/gpio_viewer_1_5/devboards_images/esp32-C6-devkitm.png" width="100"> | <img src="https://docs.espressif.com/projects/espressif-esp-dev-kits/en/latest/_images/esp32-c6-devkitm-1-pin-layout.png" width="100"> |
| ESP32 Wroom-32UE | ! <img src="https://github.com/thelastoutpostworkshop/microcontroller_devkit/blob/main/gpio_viewer_1_5/devboards_images/esp32-Wroom-32UE.png" width="100"> | <img src="https://media.springernature.com/lw685/springer-static/image/chp%3A10.1007%2F978-3-031-02447-4_74/MediaObjects/519315_1_En_74_Fig2_HTML.png" width="100"> |
| ESP32 EVB | ! <img src="https://github.com/thelastoutpostworkshop/microcontroller_devkit/blob/main/gpio_viewer_1_5/devboards_images/ESP32-EVB.png" width="100"> | <img src="https://gitlab.com/gschorcht/RIOT.wiki-Images/raw/master/esp32/Olimex_ESP32-EVB_pinout.png" width="100"> |
| ESP32-S3-DevKitM-1-N8 | ! <img src="https://github.com/thelastoutpostworkshop/microcontroller_devkit/blob/main/gpio_viewer_1_5/devboards_images/ESP32-S3-DevKitM-1-N8.png" width="100"> | <img src="https://raw.githubusercontent.com/thelastoutpostworkshop/images/main/ESP32-S3-DevKitM-1-N8_pinout.png" width="100"> |
| ESP32 S3 Wroom-1 | ! <img src="https://github.com/thelastoutpostworkshop/microcontroller_devkit/blob/main/gpio_viewer_1_5/devboards_images/esp32-s3-wroom-1.png" width="100"> | <img src="https://docs.espressif.com/projects/esp-idf/en/latest/esp32s3/_images/ESP32-S3_DevKitC-1_pinlayout_v1.1.jpg" width="100"> |
| Esp32 S2 Mini V1.0.0 | ! <img src="https://github.com/thelastoutpostworkshop/microcontroller_devkit/blob/main/gpio_viewer_1_5/devboards_images/Esp32 S2 Mini V1.0.0.png" width="100"> | <img src="https://www.studiopieters.nl/wp-content/uploads/2022/08/WEMOS-ESP32-S2-MINI.png" width="100"> |
| ESP32 POE | ! <img src="https://github.com/thelastoutpostworkshop/microcontroller_devkit/blob/main/gpio_viewer_1_5/devboards_images/ESP32-POE.png" width="100"> | <img src="https://www.olimex.com/Products/IoT/ESP32/ESP32-POE/resources/ESP32-POE-GPIO.png" width="100"> |
| ESP32 C3 Mini | ! <img src="https://github.com/thelastoutpostworkshop/microcontroller_devkit/blob/main/gpio_viewer_1_5/devboards_images/ESP32-C3-Mini.png" width="100"> | <img src="https://www.wemos.cc/en/latest/_static/boards/c3_mini_v2.1.0_4_16x9.png" width="100"> |
| ESP32 C3 Mini-1 | ! <img src="https://github.com/thelastoutpostworkshop/microcontroller_devkit/blob/main/gpio_viewer_1_5/devboards_images/ESP32-C3-Mini-1.png" width="100"> | <img src="https://raw.githubusercontent.com/thelastoutpostworkshop/images/refs/heads/main/esp32-c3-devkitm-1-v1-pinout.png" width="100"> |
| ESP32 C3 Zero | ! <img src="https://github.com/thelastoutpostworkshop/microcontroller_devkit/blob/main/gpio_viewer_1_5/devboards_images/ESP32-C3-Zero.png" width="100"> | <img src="https://www.waveshare.com/img/devkit/ESP32-C3-Zero/ESP32-C3-Zero-details-inter.jpg" width="100"> |
| ESP32 C6 Zero | ! <img src="https://github.com/thelastoutpostworkshop/microcontroller_devkit/blob/main/gpio_viewer_1_5/devboards_images/ESP32-C6-Zero.png" width="100"> | <img src="https://www.waveshare.com/w/upload/2/2e/ESP32-C6-Zero_Pin.png" width="100"> |
| ESP32-S3 Zero | ! <img src="https://github.com/thelastoutpostworkshop/microcontroller_devkit/blob/main/gpio_viewer_1_5/devboards_images/ESP32-S3-Zero-S3FH4R2.png" width="100"> | <img src="https://raw.githubusercontent.com/thelastoutpostworkshop/images/refs/heads/main/ESP32-S3-Zero-S3FH4R2_pinout.jpg" width="100"> |
| ESP32 Pico Kit v4.1 | ! <img src="https://github.com/thelastoutpostworkshop/microcontroller_devkit/blob/main/gpio_viewer_1_5/devboards_images/esp32-pico-kit-v4.1.png" width="100"> | <img src="https://raw.githubusercontent.com/thelastoutpostworkshop/images/refs/heads/main/esp32-pico-kit-1-pinout.png" width="100"> |
| Leaf S3 | ! <img src="https://github.com/thelastoutpostworkshop/microcontroller_devkit/blob/main/gpio_viewer_1_5/devboards_images/Leaf-S3.png" width="100"> | <img src="https://raw.githubusercontent.com/thelastoutpostworkshop/images/refs/heads/main/leaf-s3-pinout.png" width="100"> |
| Lilygo T-Display ESP32-S3 | ! <img src="https://github.com/thelastoutpostworkshop/microcontroller_devkit/blob/main/gpio_viewer_1_5/devboards_images/lilygo_t_display_esp32S3.png" width="100"> | <img src="https://raw.githubusercontent.com/thelastoutpostworkshop/images/refs/heads/main/Lilygo-T-Display-ESP32-S3_pinout.png" width="100"> |
| Lilygo T-SIM A7670x | ! <img src="https://github.com/thelastoutpostworkshop/microcontroller_devkit/blob/main/gpio_viewer_1_5/devboards_images/Lilygo-T-SIM-A7670x.png" width="100"> | <img src="https://www.lilygo.cc/cdn/shop/products/LILYGO-T-SIMA7670E_10.jpg?v=1669962736&width=1445" width="100"> |
| Lilygo T7 Mini32 v1.5 | ! <img src="https://github.com/thelastoutpostworkshop/microcontroller_devkit/blob/main/gpio_viewer_1_5/devboards_images/Lilygo-T7-Mini32-v1.5.png" width="100"> | <img src="https://templates.blakadder.com/assets/device_images/lilygo_T7_pinout.webp" width="100"> |
| Lolin D32 | ! <img src="https://github.com/thelastoutpostworkshop/microcontroller_devkit/blob/main/gpio_viewer_1_5/devboards_images/Lolin-D32.png" width="100"> | <img src="https://mischianti.org/wp-content/uploads/2022/10/ESP32-WeMos-LOLIN-D32-pinout-mischianti-1024x618.jpg.webp" width="100"> |
| Freenove ESP32-S3 | ! <img src="https://github.com/thelastoutpostworkshop/microcontroller_devkit/blob/main/gpio_viewer_1_5/devboards_images/Freenove-esp32-s3.png" width="100"> | <img src="https://taunoerik.files.wordpress.com/2023/05/esp32s3_pinout.png?w=1568" width="100"> |
| Freenove ESP32-Wroom | ! <img src="https://github.com/thelastoutpostworkshop/microcontroller_devkit/blob/main/gpio_viewer_1_5/devboards_images/Freenove-esp32-wroom.png" width="100"> | |
| Heltec HT-WB32_V3 | ! <img src="https://github.com/thelastoutpostworkshop/microcontroller_devkit/blob/main/gpio_viewer_1_5/devboards_images/Heltec HT-WB32_V3.png" width="100"> | <img src="https://raw.githubusercontent.com/thelastoutpostworkshop/images/main/Heltec HT-WB32_V3_pinout.png" width="100"> |
| Nano ESP32 | ! <img src="https://github.com/thelastoutpostworkshop/microcontroller_devkit/blob/main/gpio_viewer_1_5/devboards_images/Nano-ESP32.png" width="100"> | <img src="https://docs.arduino.cc/static/8307a46e73a4b5b153aa9ec0a4082443/ABX00083-pinout.png" width="100"> |
| Nano ESP32-C6 | ! <img src="https://github.com/thelastoutpostworkshop/microcontroller_devkit/blob/main/gpio_viewer_1_5/devboards_images/nanoESP32-C6.png" width="100"> | <img src="https://uelectronics.com/wp-content/uploads/2023/11/AR3836-ESP32-C6-DevKit-Placa-de-Desarrollo-Dual-Tipo-C-Pinout.jpg" width="100"> |
| Olimex ESP32-P4 | ! <img src="https://github.com/thelastoutpostworkshop/microcontroller_devkit/blob/main/gpio_viewer_1_5/devboards_images/Olimex-ESP32-P4.png" width="100"> | <img src="https://github.com/thelastoutpostworkshop/images/blob/main/Olimex%20ESP32-P4-pinout.png" width="100"> |
| Sailor Hat ESP32 | ! <img src="https://github.com/thelastoutpostworkshop/microcontroller_devkit/blob/main/gpio_viewer_1_5/devboards_images/Sailor-Hat-ESP32.png" width="100"> | <img src="https://docs.hatlabs.fi/sh-esp32/media/sh-esp32_r2.0.0_top_render.jpg" width="100"> |
| SparkleIoT ESP32-C3F | ! <img src="https://github.com/thelastoutpostworkshop/microcontroller_devkit/blob/main/gpio_viewer_1_5/devboards_images/Sparkleiot-ESP32-C3F.png" width="100"> | <img src="https://raw.githubusercontent.com/thelastoutpostworkshop/images/main/SparkleIoT-ESP32-C3F-pinout.png" width="100"> |
| StickLite-V3-ESP32S3 | ! <img src="https://github.com/thelastoutpostworkshop/microcontroller_devkit/blob/main/gpio_viewer_1_5/devboards_images/StickLite-V3-ESP32S3.png" width="100"> | <img src="https://heltec.org/wp-content/uploads/2023/09/HTIT-WSL_V3.png" width="100"> |
| SOC ESP32 WROOM 32 | ! <img src="https://github.com/thelastoutpostworkshop/microcontroller_devkit/blob/main/gpio_viewer_1_5/devboards_images/SOC-ESP32-WROOM-32.png" width="100"> | <img src="https://raw.githubusercontent.com/thelastoutpostworkshop/images/refs/heads/main/SOC-ESP32-WROOM-32-Pinout.png" width="100"> |
| T-Display S3 AMOLED | ! <img src="https://github.com/thelastoutpostworkshop/microcontroller_devkit/blob/main/gpio_viewer_1_5/devboards_images/T-Display-S3-AMOLED.png" width="100"> | <img src="https://raw.githubusercontent.com/Xinyuan-LilyGO/T-Display-S3-AMOLED/main/image/T-Display-S3-AMOLED.jpg" width="100"> |
| TinyPICO Nano | ! <img src="https://github.com/thelastoutpostworkshop/microcontroller_devkit/blob/main/gpio_viewer_1_5/devboards_images/TinyPICO-Nano.png" width="100"> | <img src="https://d2j6dbq0eux0bg.cloudfront.net/images/90477757/3788332370.jpg" width="100"> |
| TinyPico V3 | ! <img src="https://github.com/thelastoutpostworkshop/microcontroller_devkit/blob/main/gpio_viewer_1_5/devboards_images/TinyPico-V3.png" width="100"> | <img src="https://images.squarespace-cdn.com/content/v1/5c85d89877b903606126e6df/c4a98965-7415-414e-8358-339e3a0ce837/thumb-tinypico-v3_pinout_1200px.jpg?format=2500w" width="100"> |
| TTGO Display V1.1 | ! <img src="https://github.com/thelastoutpostworkshop/microcontroller_devkit/blob/main/gpio_viewer_1_5/devboards_images/TTGO-Display-V1.1.png" width="100"> | <img src="https://uelectronics.com/wp-content/uploads/2020/10/Esquematico-TTGO-T-Display-ESP32-scaled.jpg" width="100"> |
| Wemos Lolin32 Lite V1 | ! <img src="https://github.com/thelastoutpostworkshop/microcontroller_devkit/blob/main/gpio_viewer_1_5/devboards_images/Wemos-Lolin32-Lite-V1.png" width="100"> | <img src="https://templates.blakadder.com/assets/device_images/wemos_LOLIN32_Lite_v1_pinout.webp" width="100"> |
| Wemos Lolin S3 Mini | ! <img src="https://github.com/thelastoutpostworkshop/microcontroller_devkit/blob/main/gpio_viewer_1_5/devboards_images/Wemos-Lolin-S3-Mini.png" width="100"> | <img src="https://universalsolder.b-cdn.net/wp-content/uploads/2023/05/26837-WEMOS-S3-Mini-ESP32-S3FH4R2-1.jpg" width="100"> |
| Wemos D1 Mini ESP32 | ! <img src="https://github.com/thelastoutpostworkshop/microcontroller_devkit/blob/main/gpio_viewer_1_5/devboards_images/Wemos-D1-Mini-ESP32.png" width="100"> | <img src="https://templates.blakadder.com/assets/device_images/wemos_D1_Mini_ESP32_pinout.webp" width="100"> |
| Wemos D1 Mini ESP8266 | ! <img src="https://github.com/thelastoutpostworkshop/microcontroller_devkit/blob/main/gpio_viewer_1_5/devboards_images/Wemos-D1-Mini-ESP8266.png" width="100"> | <img src="https://edistechlab.com/wp-content/uploads/2021/04/WeMos-d1-mini-Pin-out.png" width="100"> |
| WT32-S1-ETH01 | ! <img src="https://github.com/thelastoutpostworkshop/microcontroller_devkit/blob/main/gpio_viewer_1_5/devboards_images/WT32-S1.png" width="100"> | <img src="https://uelectronics.com/wp-content/uploads/2023/12/AR3833-WT32-ETH01-Placa-desarrollo-pinout.jpg" width="100"> |
| NodeMcu ESP8266 | ! <img src="https://github.com/thelastoutpostworkshop/microcontroller_devkit/blob/main/gpio_viewer_1_5/devboards_images/NodeMcu-ESP8266.png" width="100"> | <img src="https://i0.wp.com/randomnerdtutorials.com/wp-content/uploads/2019/05/ESP8266-NodeMCU-kit-12-E-pinout-gpio-pin.png?resize=817%2C542&quality=100&strip=all&ssl=1" width="100"> |
| XIAO ESP32 C3 | ! <img src="https://github.com/thelastoutpostworkshop/microcontroller_devkit/blob/main/gpio_viewer_1_5/devboards_images/XIAO-ESP32-C3.png" width="100"> | <img src="https://files.seeedstudio.com/wiki/XIAO_WiFi/pin_map-2.png" width="100"> |
| XIAO ESP32 S3 | ! <img src="https://github.com/thelastoutpostworkshop/microcontroller_devkit/blob/main/gpio_viewer_1_5/devboards_images/XIAO-ESP32-S3.png" width="100"> | <img src="https://cdn.cnx-software.com/wp-content/uploads/2023/03/XIAO-ESP32-S3-pinout-diagram.png?lossy=0&strip=none&ssl=1" width="100"> |

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