Questions tagged [softwareserial]
A library for emulating UART functionality in software on any available digital IO pins. Use this tag for questions regarding SoftwareSerial.
465 questions
1 vote
1 answer
114 views
Software serial and RS485
I have 2 Arduino Nano that will communicate in half duplex mode with transceiver using MAX485. But the master has libraries like Wire.h, uses tone() and also receives UART communication. I'm a ...
- 111
0 votes
2 answers
194 views
SoftwareSerial.h: No such file or directory Arduino Nano + DF player
I'm looking to play songs from a DF Player mini and for that I use the SoftwareSerial.h library but my code keeps compiling an error that it's not there. In addition, the error only appears when I use ...
1 vote
1 answer
128 views
How to run G code with SoftwareSerial?
I'm trying to build my own CNC machine. Since I need to control a large number of motors at the same time, I want to control it via an Arduino master and several slaves with CNC shields. Now I'm ...
- 11
3 votes
0 answers
108 views
Why RTU bridge timeout even though answer is received?
I'm testing the following code as a bridge between https://sourceforge.net/projects/qmodmaster/ and https://pypi.org/project/pyModSlave/. As hardware, I'm using a NodeMCU 1.0 and a USB/TTL converter. ...
- 31
0 votes
1 answer
184 views
Interfacing A9G with Arduino for AT commands testing
I am trying to hook up to an A9G Pudding GSM board via an Arduino. I intend to use the onboard UART chip to facilitate TTL-UART conversion between PC and A9G. I have initiated a software serial ...
- 19
1 vote
0 answers
189 views
Bluetooth (HC_06) on the Attiny85
I'm trying to make a hc_06 Bluetooth controller work on the attiny85-20pu. In the end, I want to control a stepper motor through Bluetooth. But for now to keep it simple I'm searching for a working ...
-1 votes
2 answers
334 views
How can I get servos to not brownout my Arduinos and power supply?
I have a problem with a project where one servo is resetting (browning out) two Arduino Pro Minis running 3.3v/8mHz. The two Arduinos are connected by SoftwareSerial on pins 9 and 10 and the slave ...
2 votes
2 answers
442 views
reading device or board specific properties from the Arduino MKR WiFi 1010 device
How to read programmatically the device specific properties from the Arduino MKR WiFi 1010 chip or board? For example, following properties of the device: any identification number, that can uniquely ...
0 votes
2 answers
545 views
ATtiny85 with sleep and serial
I want to communicate over serial to another device (dfplayer) and also set the microcontroller into sleep mode. The ATtiny85 does not have a hardware serial pin so I need to use a virtual serial (...
- 191
0 votes
1 answer
377 views
sim800l gsm module response isn't completed
I am using the sim800l gsm module with nodemcu esp8266 and comunicating with it using AT+ commands. The module is working correctly but I am trying to use the command AT+CLCC to get all the current ...
1 vote
1 answer
523 views
HardwareSerial and SoftwareSerial not compatible
The HardwareSerial requires to run an interrupt to store received bytes in the buffer. Look at this file from the Arduino Core. If I am now constantly receiving and writing on the Software Serial, the ...
- 127
-3 votes
1 answer
182 views
SoftwareSerial and HardwareSerial lost data
I need two Serial ports. One port is some sort of modified Software Serial, where I have to be listening constantly and send responses immediately if the port requires it. There is no XY problem ...
- 127
4 votes
2 answers
201 views
Arduino unable to read 0x41 and 0x42 (reads others just fine (ICT bill acceptor)
Here is my issue: My code successfully recognizes and accepts $1 (0x40) and $20 bills (0x43), but it fails to recognize, display, process, anything for the $5 bill (0x41), and $10 bills (0x42). Also, ...
- 71
2 votes
0 answers
185 views
Arduino Uno not interfacing with GSM SIM900A Module
I am using an Arduino Uno with a SIM900A module. I want to send a simple SMS but it is not working, as it either has no response in Serial monitor or there are reversed question marks. I have attached ...
- 29
2 votes
1 answer
305 views
How do I make the Arduino print on my Mac's Arduino IDE through Bluetooth?
This is a basic question, but I really have tried my best to find a solution on the internet to no avail. I have a fairly normal setup. HC05 module connected to an Arduino. The HC05 is also connected ...
- 131