Summary of Temperature Displayed on 4 Digit 7 segment using Arduino
This project displays temperature on a 4-digit common-anode 7-segment display using an Arduino, an LM335Z temperature sensor, and a 74HC595 shift register. It demonstrates reading sensors, driving multiplexed 7-segment displays with shift registers, and wiring practice, and is intended as reusable code for future 7-segment projects.
Parts used in the Temperature Displayed on 4 Digit 7 segment using Arduino:
- Arduino Uno
- Temperature Sensor LM335Z
- 4 Digit 7 Segment Display (common anode)
- 74HC595 8 Bit Shift Register
- 8 × 220 Ohm Resistors
- 1 × 4700 Ohm Resistor
- Breadboard (or two)
- Jumper Cables
In this project I’ll display the temperature in a 4 digit 7 segment display (common anode).
The sensor is the cheapest you can find so actually the temperature changes pretty easily which makes the display to show always different temperatures.
But the idea is to apply this code to other projects with 7 segment displays that I might do later. if you want to learn a bit more of 7 segment displays you can read more at this post I’ve made.
This project is great to learn more about:
- Reading sensors (in this case temperature)
- 7 segment displays (4 digit 7 segment displays)
- 8 bit Shift Registers (74HC595)
- Pratice wiring
and for more project and tips you can also check my website:
http://randomnerdtutorials.com/
You can see this project working right now:
Step 2: Schematics
I think it’s a bit hard to follow the yellow connections with this schematic.
So i recommend that you take a look at the 74HC595 pins and to the internal circuit diagram of the 4 digit 7 segment display (common anode).
So how does the yellow connections were made?
Basically the pin 11 connects to the QA, the pin 7 to the QB and so one…
Parts Required
- 1x Arduino Uno
- 1x Temperature Sensor (I’m using the LM335Z)
- 1x 4 Digit 7 Segment Display (common anode)
- 1x 74HC595 8 Bit Shift Register
- 8x 220 Ohm Resistors
- 1x 4700 ohm Resistor
- 1x Breadboard (or two)
- Jumper Cables
For more detail: Temperature Displayed on 4 Digit 7 segment using Arduino
- What microcontroller is used in the project?
The project uses an Arduino Uno. - Which temperature sensor is used?
The LM335Z temperature sensor is used in the project. - What type of 7 segment display is required?
A 4 digit 7 segment display with common anode is required. - Which shift register is used to drive the display?
The 74HC595 8 bit shift register is used. - How many 220 ohm resistors are needed?
The project requires eight 220 ohm resistors. - Is a breadboard needed for this project?
Yes, a breadboard (or two) is listed as required. - What is the purpose of the 4700 ohm resistor?
The parts list includes one 4700 ohm resistor as part of the required components. - Can the code be applied to other 7 segment projects?
Yes, the idea is to apply this code to other 7 segment display projects later. - Where can I find more details and related tutorials?
More projects and tips are available at http://randomnerdtutorials.com/ and the linked post for this project.
