Design with SparkFun AST-CAN485 Wifi Shield in Cirkit DesignerThe SparkFun AST-CAN485 WiFi Shield is an innovative communication module that integrates WiFi connectivity with CAN (Controller Area Network) and RS-485 protocols. This shield is designed to be compatible with the Arduino UNO form factor, enabling users to add wireless communication capabilities to their projects with ease. It is particularly useful for applications in automation, automotive systems, and industrial control where robust and reliable communication is essential.
This circuit is a smart target system that uses an ESP8266 NodeMCU to control an Adafruit NeoPixel Ring, a piezo buzzer, and sensors (vibration and sound) to detect hits. The system connects to a Wi-Fi network and communicates with a server to report hit events and receive configuration updates, utilizing an RS-485 module for additional communication capabilities.
Open Project in Cirkit Designer
This circuit features two Arduino UNO R4 WiFi microcontrollers interfaced with NS-LS2 light sensors and CAN_SN65HVD230 CAN bus transceivers. The Arduinos are configured to read light intensity data from the NS-LS2 sensors and communicate with each other over a CAN network, likely for a distributed sensing application. Power distribution is managed with 3.3V and 5V connections to the respective components, and the ground connections are shared across the devices to complete the circuit.
Open Project in Cirkit Designer
This circuit integrates an Arduino Nano with an SX1278 LoRa transceiver module via an I/O Expansion Shield for SPI communication. It is designed for long-range wireless data transmission, with the Arduino Nano serving as the central processing unit to control the LoRa module. The provided code is a placeholder, suggesting that the user-specific application logic is yet to be developed.
Open Project in Cirkit Designer
This circuit features a SparkFun ESP32 Thing Plus microcontroller interfaced with an Adafruit ICM20948 9-axis motion sensor via an Adafruit TXB0104 4-channel bi-directional level shifter. The ESP32 reads data from the ICM20948 sensor, calculates orientation angles such as pitch, roll, yaw, and azimuth, and outputs these values to the serial monitor. The level shifter ensures compatibility between the 3.3V logic levels of the ESP32 and the 1.8V logic levels required by the ICM20948.
Open Project in Cirkit Designer| Pin Number | Function | Description |
|---|---|---|
| D0 | RX | UART Receive pin |
| D1 | TX | UART Transmit pin |
| D2 | INT | Interrupt pin for CAN controller |
| D10 | CS | Chip Select for CAN controller |
| D11 | MOSI | SPI communication (Master Out Slave In) |
| D12 | MISO | SPI communication (Master In Slave Out) |
| D13 | SCK | SPI communication (Serial Clock) |
| A0 | RS-485 A | RS-485 A-line (non-inverting) |
| A1 | RS-485 B | RS-485 B-line (inverting) |
| VIN | Voltage Input | Input voltage for the shield (5V recommended) |
| 3V3 | 3.3V Output | 3.3V output from the onboard voltage regulator |
| GND | Ground | Ground connection |
#include <SPI.h>
#include <ESP8266WiFi.h>
// Replace with your network credentials
const char* ssid = "yourSSID";
const char* password = "yourPASSWORD";
void setup() {
Serial.begin(115200); // Start serial communication at 115200 baud
WiFi.begin(ssid, password); // Connect to WiFi network
while (WiFi.status() != WL_CONNECTED) {
delay(500);
Serial.print(".");
}
Serial.println("");
Serial.println("WiFi connected");
}
void loop() {
// Your code here to handle CAN/RS-485 communication
}
Note: This example demonstrates how to connect to a WiFi network using the ESP8266 module on the SparkFun AST-CAN485 WiFi Shield. Additional code is required to handle CAN or RS-485 communication, which will depend on the specific requirements of your project.
Remember to adhere to the 80 character line length limit for code comments, wrapping text as necessary. This ensures readability and maintainability of the code.