7-segment correctly connected

[jurin]

Hello Guys,

I want to connect a 7-segment but I'm not sure if that's correct can someone help me? (am new to this)

my goal in the end is that it just counts up
The numver of the 7-segment ist:
LTC4622G

Can anyone give me the solution, maybe draw it or something? I won't understand it otherwise but I'm really trying. Maybe then also a bit of code that a certain number is displayed. I know you learn less that way. But thanks for all the answers

Vieleicht es auch jemand deutsch und kann es mir besser erklären

[ruilviana]

HTH

"How to Set up Seven Segment Displays on the Arduino - Circuit Basics
and
"GitHub - workinghard/LTC4622G: LTC4622G library for Arduino

LTC4622G

[anon57585045]

I see no schematic of your proposed connections. That should be made, before you even touch any wires or parts...

[GolamMostafa]

This (Fig-1 may be helpful.

Figure-1:

[anon57585045]

@jurin

I'm not sure if that's correct

What happens when you power up your hardware? Did you write any code?

[Etienne_74]

@jurin

I'm not sure if that's correct

You need one resistor per segment, not one resistor per digit => resistors connect to pins 1, 2, 3, 4, 5, not to pins 6, 7, 8, 9

[Grumpy_Mike]

This is how to connect a 4 digit seven segment common anode display. For only three digits just miss out one of the displays shown here.

Note the transistors to supply the current, the pins alone are insufficient, and could end up damaging your Arduino. Note that the current limiting resistors are on the cathode.

Also you might not be familiar with the depiction of a wiring bus, those thick wires. Think of the thich wires as a bundle of wires and you fish out the required wire name for each. It makes the schematic a lot neater and simpler to read,

[JohnLincoln]

Grumpy_Mike,
That is an excellent post on how to connect 4 x 7 segment common anode LED displays.

However, unfortunately it does not help jurin as he has a particular two and a half digit module - LTC4622G.

GolamMostafa's post #4 also does not help jurin.

There is a datasheet for the display that jurin has at:
https://github.com/workinghard/LTC4622G/blob/master/LTC-4622G1.pdf

and there is an Arduino library for the module at:

GitHub - workinghard/LTC4622G: LTC4622G library for Arduino

(This was mentioned by ruilviana in post #2).

[Grumpy_Mike]

@JohnLincoln

However, unfortunately it does not help jurin as he has a particular two and a half digit module - LTC4622G.

I think it does because the half digit is only wired up to segments b & c.

But if you think it would help here it is again as a two and a half digit display:-

The anode drivers can be connected to any free Arduino outputs.

@JohnLincoln

There is a datasheet for the display that jurin has

And he posted the relevant parts of it in post #1

[anon57585045]

@Etienne_74

You need one resistor per segment, not one resistor per digit

Should have, not need. Using a single resistor is a common deliberate hack. It makes the segment illumination uneven, but some people don't care about it.

[ruilviana]

This module - LTC4622G. has a special pinout :
See next image:

CATODE
Segment of 1st digit
A1 connected with B1; PIN 1

Segment of 2nd and 3rd digits

A2 connected E2 connected A3 connected D3; PIN 2
B2 connected E2 connected B3 connected E3; PIN 3
C2 connected F2 connected C3 connected F3; PIN 4
DP2 connected G2 connected DP3 connected G3; PIN 5

ANODE

1st digit PIN 8
2nd digit PIN 8 and PIN 9
3rd digit PIN 6 and PIN 7