Questions tagged [convert]
Change data from one format to another.
58 questions
-1 votes
1 answer
78 views
How to get recover numeric data sent by an Arduino in binary
I am a C# dev and these C++ data conversions are killing me. I have an Arduino sending binary data through LoRaWAN to AzureIOT. I am trying to decode my Temp/Humid/Bat payload that I am pulling out of ...
- 103
0 votes
1 answer
85 views
Make my Arduino (Mega or whatever is better for the task) to be able to read and write `Serial` data to a **rj45** port
I have a Chinese hybrid solar inverter that exposes an rj45 input which talks the serial protocol (Baud rate 2400, no parity, 8 bits, 1 stop bit). I need my Arduino (say, Mega or whatever, does not ...
- 111
1 vote
1 answer
1k views
Parse char* mac-string to uint8_t array
I have to handle a String coming in over UART containing a bunch of information, part of it is a MAC-address that I get by using String.substring(a, b) returning a 12-char String representing a mac-...
- 11
3 votes
1 answer
786 views
How do I use a transmitter and receiver to send string messages conditionally to a receiver?
I'm working on a project to build a plant monitor that works from the outside with Arduino that picks up light and water values from it's environment then uses a nRF24L01 with an antenna and I've come ...
- 61
0 votes
0 answers
187 views
Arduino RS485 do I need MAX485?
I'm trying to connect sesnor that use RS485 (I'm almost sure that's modbus). The sensor has RX/TX and +/- wires. Do I still need a component between the RX/TX pin from the Arduino UNO and the sensor ...
- 9
1 vote
1 answer
354 views
float miscalculation when int32_t variable is divided by 10 [duplicate]
i want to ask, how to get correct float value from uint32_t or long variable is devided by 10?? long var3 = 1139399025; int a = 3; int b = 10; void setup() { Serial.begin(9600); Serial.println((...
- 11
1 vote
2 answers
2k views
Converting 16bit to float
I am trying to communicate with AT30TS75A-MA8M-T with below code, the problem is converting the 16 bit output to float so I can read temp: Base on data sheet I suppose to remove first 5 bit in order ...
- 165
0 votes
1 answer
2k views
String to unsigned 16-bit integer
I'm currently working on a project with a 4DSystems Display. Im talking to the Display over SoftwareSerial with an ESP32. As soon as I want to use a Unicode character it requires me to convert my ...
- 1
1 vote
1 answer
1k views
How to convert serialized JSON string back to JSON object?
How to convert JSON String for example {"f0":100,"f1":100,"f2":100} It is what I get from my esp01 side from I2C communication Now I want it to get it back to my Arduino ...
- 161
1 vote
0 answers
161 views
How to use 5v and 12v addressable led strip together
Hi guys I’m new to this forum and also not much experience about led lights question already asked but didn’t get any detailed answer I want to know can I provide working data signal to 2 different 5v ...
- 11
0 votes
2 answers
230 views
How to use float data from a sensor with the Arduino mouse library
I'm using a gyroscope, which returns angular velocity in floats. I'm trying to use this data with the arduino mouse library. The move function requires a signed character. I'm not what the best way is ...
- 367
3 votes
1 answer
857 views
Programmatically-adjustable buck converter module?
LM2596 is easy to use and cheap, but I have to adjust the output voltage using a screw driver. On the web, there was a "hack" that someone posted, but that hack does not seem as clean or ...
- 357
0 votes
2 answers
1k views
Float to int conversion not working right in method using varargs
I am trying to convert a floating point number to an integer, but it seems like the conversion is not working properly. I am using the math library to calculate the power of 10 based on the number of ...
- 185
2 votes
1 answer
429 views
Converting from Float to Int yielding weird results. What am I doing wrong?
So I am trying to take GPS data with a Neo 6M gpsmodule (that is what is covered up by the square for privacy sake) and process it by adding/multiplying to get large integers representing the GPS data....
0 votes
2 answers
506 views
Convert character to Integer while leaving encoded
I have two characters, that I get by Bluetooth. char a = SerialBT.read(); char b = SerialBT.read(); According to the Arduino Reference, decoded data stored in a char gets encoded to ASCII text. I ...
- 426