BMP-180 SCL – Grey wire SDA – Orange Wire Notes: Here the hardware TX and RX has been used for performance. The code: See Arduino – Communicate with Server – Part 1 Updated code will be posted here some time soon. For more details on ESP 8266 please see the article “https://www.kolkataonweb.com/code-bank/arduino/esp8266-esp-01/“
Category: Arduino
Arduino – Bluetooth Communication Using HC-05
HC-05 is a cheap (and easy to use) module that can be used to provide bluetooth connectivity to Arduino. There are cheap breakout boards available on ebay that can be powered directly by the 5v supply of the Arduino. Below is a picture of such a breakout board. Though my board has “level 3.3v” written… Continue reading Arduino – Bluetooth Communication Using HC-05
ESP 8266 – ESP 01 – Installing Non-OS SDK
After a bit of trial and error got the Non-OS SDK installed. To flash the Non-OS SDK, two sets of files are needed. Below are the download links ESP8266_NONOS_SDK_V1.5.2_16_01_29 on Expressif site OR from here [AT Release] ESP8266_AT_V0.60 based on ESP8266_NONOS_SDK_V1.5.2 on Expressif Site OR from here The flashing tool is attached here for… Continue reading ESP 8266 – ESP 01 – Installing Non-OS SDK
DS-1302 RTC Clock Module for Arduino
DS-1302 from Maxim (data sheet download) is a cheap RTC chip. Below are some of the salient features. Real-Time Clock Counts Seconds,Minutes, Hours, Date of the Month, Month, Day of the Week, and Year with Leap-Year Compensation Valid Up to 2100 Simple 3-Wire Interface 2.0V to 5.5V Full Operation TTL-Compatible (VCC = 5V) 31 x… Continue reading DS-1302 RTC Clock Module for Arduino
Arduino – Communicate With Server – Part 3 – Web Based Panel
This is the code for the web based panel (web based UI) that will display the data received from arduino or can send some command to the Arduino All communications are done through a server (web server) The frontend code <?php date_default_timezone_set(“Asia/Kolkata”); $conn = mysql_connect(“localhost”,”root”,”xxxxxxxxxx”); if(!$conn) { echo “Error: failed to connect DB”; … Continue reading Arduino – Communicate With Server – Part 3 – Web Based Panel