BotronikS - Final code for all types of Arduino and PC users: -- HOME -- email: botronik@gmail.com
What you need to install or have installed before on your PC: see HERE

RFC4out1dht: RF (radio freq.) Status control of up to 4 outputs + Sensor DHT22 from PC by Text commands...

Shm:

Xloader:

Termite-PC side:

accessories:  
TB shield: 1 - 2 - 3
Reley shield: 1 - 2 - 3
HC-12 : 1 - 2 - 3
HC-12 data
USBtoTTL: 1 - 2 - 3
Sensor: 1 - 2 - 3
 
 
Download the HEX codes below, unpack, and upload to the proper Arduino board (Use a free net tool for example XLoader)
1. ATmega328-16MHz (NANO, UNO...........): HexCode-m328
2. AtMega2560 (Mega(MEGA2560)..........): HexCode-m2560
HexCode is Free! Ask for the price of the ArduinoIDE source code.
Based on the offered Text commands, you can develop your PC, PLC ... communication code, and applications...
Available TEXT commands: Test uploaded code using some free serial software such as Termite
AT - returns OK
OA - returns the status of all outputs
Ox - returns status of single output x (x=1-4 H=5V L=0V)
OxH - set single OUTx at HI(5V) level - example: O1H
OxL - set single OUTx at LO(0V) level - example: O2L
OAH - set all outputs at a high (5V) level
OAL - set all outputs at a low (0V) level
V01 - returns value of sensor temperature (C)
V02 - returns value of sensor humidity (%RH)