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Title: Arduino Stack Exchange

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Math in Arduino

I have an I2C device that gives me 24 Bit data, that I save in uint32_t by masking the 2 MSBs. Now with this data, I want to do two operations.

Subtract a number to "center" the working range of the device. Multiply it to find some other quantity.

The current implementation in code is like

uint32_t quantity1; // I have my value in this variable quantity1 -= 0x100...


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// This example code is in the Public Domain (or CC0 licensed, at your option.) // By Evandro Copercini - 2018 // // This example creates a bridge between Serial and Classical Bluetooth (SPP) // and also demonstrate that SerialBT have the same functionalities of a normal Serial // Note: Pairing is authenticated automatically by this device #include "BluetoothSerial.h" String ...


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I've got an Arduino Uno, SIM900 GPRS, and the Adafruit Breakout GPS.

Can this code be optimized?

#include <SoftwareSerial.h> #include <TinyGPS++.h> #include <Ubidots_Arduino_GPRS.h> //Serial Relay - Arduino will patch a //serial link between the computer and the GPRS Shield //at 19200 bps 8-N-1 //Computer is connected to Hardware UART //G...


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Forum post

I would like to ask if someone has this shield fully working?

My biggest problem is the touch screen that I couldn't manage to make work.

Here is the code I am using:

// ic: ili9327 #define LCD_RD A0 #define LCD_WR A1 #define LCD_RS...


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Please let me know if you know any good library for DS2482 I2C to 1-Wire bridge. I tried to use the DS2482_OneWire library but I got errors when trying to run the library examples (Read_temp_sensors and Scan_1Wire_Bus):

Error for Re...


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