Arduino Stack Exchange
Arduino Stack Exchange

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.

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.

Discussions about power requirements generally revolve around the fact that the HC-12 will not function when an Arduino is being powered only by the USB programming cable. Programming considerations generally are about the differences between utilizing the module in default mode or programming them for multiple-channel installations.

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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. However, when I'm trying to configure the HC-12s…
orphidian11
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HC-12 receives garbage, but the garbage is consistent

I'm playing with two HC-12 wireless communication modules. After setting AT+FU4, I tested the modules, but the communication appeared to be unreliable in one direction. I tried to simplify the code as much as possible, and here's what I got: First…
Arseni Mourzenko
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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 received in the second unit is again to be…
Ninja2112
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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 sent momentarily through HC-12 433 Mhz module to a…
Aidakf
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1 answer

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.write() to write/send one byte. Obviously, I started…
Fred Cardoso
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3 answers

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 make comparisons. But I'm getting junk data that…
dka13
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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.
salar ahmed
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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 really simple and worked fine for a couple of days…
Damien Pirsy
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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 #include SoftwareSerial mySerial(2, 3); //…
CaglarCaliskan
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Known conflicts between use of HC-12 and Ethernet Shield on Mega2560?

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 Ethernet Shield is invoked, which creates a…
KC Tucker
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