Questions tagged [hc-12]

This tag can be used when the topic of discussion includes the use of the HC-12 wireless communications module. Prime topics for this module are power requirements and programming cnsiderations.

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Where are these junk characters (from serial) coming from?

I currently have 2 Arduinos both hooked up to HC-12s and have successfully got them communicating. But I am now trying to be able to process the data sent across and store it as a variable so as to ...
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1answer
54 views

Connect 4 HC-12 transmitters to 1 HC-12 receiver

I am currently receiving data from HC-12 modules via USB-TTL that are working in pair . But I want to receive data simultaneously from 4 Hc-12 modules to a single HC-12 module via USB-TTL.
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0answers
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How can I interface, received HC-12 data and transmit the received data using sx-1278 RF-module in arduino-UNO?

I am currently working on a project, where I need to send data from first unit to the second unit which is a few km apart, so I decided to go with hc-12 RF module as it covers upto 5km. Then the data ...
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0answers
233 views

HC-12 problem with reading momentarily strings

I'm new here, so I hope my question is not naive. I'm using Arduino mega connected with a pulse sensor and a GPS (and other things that are not related to our problem), pulse sensor and GPS data are ...
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0answers
553 views

HC-12 AT Commands not working

I'm currently working on HC-12 transceivers. Normal operations are fine and I was able to successfully transmit basic strings between an Arduino UNO and and Arduino Nano, both of which use HC-12s. ...
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1answer
437 views

HC-12 modules stopped receiving, cannot understand why

I've created a simple transmitter with an HC-12 and an Arduino Nano (clone), where I send the values of DHT11 and LM35 sensors to a receiver unit made only of a Wemos D1 and another HC-12. Setup is ...
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1answer
215 views

Measure Sofware Serial write() time

As you probably know, SoftwareSerial uses Interrupts to do some of the timing stuff of the Serial communication. What I am trying to accomplish is to measure the time that it takes SoftwareSerial....
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1answer
1k views

Arduino Servo with Serial

I have an interesting problem. I want to control ESC and servo with Arduino. I'm using HC-12 to communicate with 2 Arduino and I'm using SoftwareSerial on the nano. #include <SoftwareSerial.h> ...
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1answer
355 views

Known conflicts between use of HC-12 and Ethernet Shield on Mega2560? [closed]

I have two somewhat similar sketches that use both HC-12 [for data collection] and a W5100-type Ethernet Shield [for Email construction and transmit]. Both sketches run fine until the code for the ...