chevron_left
chevron_right
[T] - Afficheur I2C ROUGE 4 chiffres de 7 seg. - 14.2mm
4-digit display (14.2mm) - 7 segments RED with I2C support
Secure payments
Payments are secured by LyraCollect, a French payment collection company.
Payments are secured by LyraCollect, a French payment collection company.
Multiple delivery solutions
It is possible to delivered to your home, to a pick-up point or picked up by appointment at MCHobby
It is possible to delivered to your home, to a pick-up point or picked up by appointment at MCHobby
Parcels packed with care and efficiency
We prepare, pack and ship your orders with great respect and care.
We prepare, pack and ship your orders with great respect and care.
Description
Digital display I2C 4x7 segments to display numeric value and time - red
What could be better than one LED? Full of LEDs! It allows to realize small displays using 8x8 matrix or 7-segment 4-digit displays. Such matrices use 'multiplexing'. To control 7 LED segment, you need 14 pins. So that's a lot of pins, there are many control circuits like the MAX7219 to manage matrices but it requires a lot of connections that use a ton of space.
AdaFruit has of course found a solution to this heavy situation and has developed a breakout to control tons of LEDs matrix or segment without having to spend half of the day to make connections :-)
This breakout comes in two versions: one for controlling a 8x8 mini matrix and 4-digit, 7-segment sections. Adding LED displays to your projects becomes totally trivial.
The Breakout + display we propose uses a control circuit that supports the arduous part of the work. It has an internal clock that it uses for multiplexing operations. It also uses a constant-current power supply, ideal for managing high-brightness devices but also preserves color consistency.
The Breakout + display we propose uses a control circuit that supports the arduous part of the work. It has an internal clock that it uses for multiplexing operations. It also uses a constant-current power supply, ideal for managing high-brightness devices but also preserves color consistency.
The above images are photographed with a minimum of brightness so as not to dazzle the shot!
The brightness is adjustable in steps of 1/16 of the power, all via a simple I2C interface. The backpack (control board) comes with addressing connectors (jumper to weld), so it is possible to connect up to 4 8x8 matrix or 8 7-segment displays (or a combination such as 4 8x8 matrix and 4 7-segment display, etc) on a single I2C bus.
Contain
The kit contains the following elements:
- A LED controller (LED backpack) totally assembled and tested.
- A high-brightness 4-digit (7 segments per number) RED display 14.2mm high.
- A 4-pin pinHeader
Some welding operations are needed to attach the LED/display matrix to the control board. Same for the pinHeader if you want to use it.
This operation should not take more than 5 minutes.
Tutorials
- A library is available to take control of the controller (backpack). In half an hour, you can display logos on a LED matrix or numbers on a 7-segment display.
- A tutorial in French for Arduino explaining how to weld, connect and control the display.
- A tutorial in French for Raspberry Pi.
- AdaFruit offers a tutorial (AdaFruit, in English) explaining how to weld, connect and control the display.
- Dolorean Time Machine (AdaFruit, in English), very interesting project explaining how to easily control several separate I2C buses from an Arduino.
- Use a 4x7 matrix with the PyBoard (Micro Python)
If you are interested by a LED matrix (or equivalent) but complexity is an obstacle to take the plunge... this option is the solution you were looking for!
Data sheet
