Arduino code LDP0020B: Measurement temperature and relative humidity (2X sensor DHT22) and show at one LED display - FreeHex!

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Nano
Uno
Mega

- 7 Segment TM1637 display: (link) 1--2--3
- DHT22 sensor: (link) 1 - 2 - 3
 
 
- PS9V/1A Power supply unit: (links) 1--2--3
misc: Wires: (link) 1--2--3 -- Resistors: (link) 1--2--3
 
Arduinos
connections (click to enlarge)
- Need additional accessories:

LDP0020B: Measurement temperature and relative humidity (2X sensor DHT22) and show at one LED display - FreeHex!
The offered code enables: Temperature and relative humidity value shown on one display
Required accessories: - see above
For Arduino boards: NANO or UNO or MEGA
Arduino pins are used:
uc ATmega328p (NANO, UNO, ...): (see connections)
uc AtMega2560 (MEGA,.............): (see connections)
 
Electrical and practical notes:
Uses 9V/1A external power supply (VIN/GND) on DC plug (or external 5V/1A on 5V/GND pin).
If you want to use a longer length of the sensor connection cable, use a resistor of smaller value R1 = 2,2K
Display of the both measured value is in the form of one decimal digit.
Use specified type of 7 segments display with decimal points only (not clock dots).
S1 switch selector for temperature display in Celsius or Fahrenheit
P1 Display brightness selection potentiometer (0-7)
 
Download the FreeHEX codes below, unpack and upload to the proper Arduino board (Use a free net tool for example XLoader)
1. uc ATmega328-16MHz-5V (NANO,UNO...) LDP0020B-M328
2. uc AtMega2560 (Mega(ATMEGA2560).....) LDP0020B-M2560
Fully functional code but in hex format only! Test and use it free! If You want ArduinoIDE source code - see below.
 
ArduinoIDE source code (avaliable): Do some donation (HOME) and copy bottom line in Your Email to us (CONTACT). After successful donation You will receive ProjCode on your email soon as possible.
Need of project code: ProjCode-LDP0020B (ArduinoIDE source code)
 

User guide manual:
t1 xxx h1 xxx (temp. and humidity from Sensor1)
t2 xxx h2 xxx (temp. and humidity from Sensor2)