So, let's get started...Using a display of this kind requires almost no materials.- 1 x breadboard of any size (they don't need the power rails)No tools are required in order to make a prototype of this design. Re : Branchements afficheur 7 segments 4 digits ? Sur votre carte de test, les digits CC1 à CC4 sont connectés aux pattes 10 à 13 . Thanks for the walkthroughI found something interesting about the module. Emitter terminals of the 4 transistors are connected to +5V which comes from the Arduino board. If not then, read step six for whatever is happening wrong. Locate in the code " sevseg.begin(COMMON_CATHODE, numDigits, digitPins, segmentPins); "- Your display is displaying 3. Base terminals of the four transistors are connected to Arduino through 4.7k resistors.The push button which is connected to Arduino analog pin 0 (A0) is used to increment the displayed number.Shift register clock pin and data pin are defined as:The display needs to be refreshed periodically, for that I used Timer1 module interrupt with the following configuration:With Timer1 prescaler = 1, we’ve an interrupt every 4096 microseconds. If you now how to do this then skip to the next step, otherwise keep on reading. Re : Branchements afficheur 7 segments 4 digits ? Locate the line in void loop where it says to display (3.141, 3) and change 3.141 to 8888 and see if one of the 8 are missing4. Probably your motor inducing back-EMF and the display module/Arduino is shorted and resets.Whenever something resets its usually a bad sign :)Try adding a diode in parallel with the motor and the problem should be solved.you mentioned you are using 4x330ohm (one for each digit out of 4) resistors and risk burning some of the led's on the display (segments or digits).



Using a 4 Digit & 7 Segment Display, With Arduino: In this tutorial I will be showing you how to use a 7 segment display with 4 digits using arduino. les pinoches 1-2-6-8 sélectionnent le digit allumé , suffit de lire la notice. Sadly this IS NOT fixable and you would want to buy another display. I think both solutions accomplish the same thing because the internal wiring in the segment (a multiplexing setup) has all of the connections between connected LEDs in series so it shouldn’t matter where you put the resistors, as long as every LED has one in either of its respective series’ (the series where all of the X-segments are connected or the series where all of the segments in the Y-digit are connected). So for a 4-digit 7-segment display we need just 6 pins: clock, data and 4 common pins (each digit has its individual common pin).
Having tested a few number combinations in which either 3.141or 8888 was presented as expected, however, any combinations in term of 008X wouldn't be verified by IDE(windows), the error message is "invalid digit "8" in octal constant". 4 months ago Convince me why a resistor per segment is better than a resistor per digit and I will edit. I have got it working bar 1 issue! So used I WAS TRY MAKE IS ON PROTEUS BUT ITS NOT WORKING.

I'm just guessing since I have no related experience. Also, I would like to point out that these displays have no need for Ground, 5V, or 3.3V to be connected. If your arduino application was opened and running while you where putting the library into the libraries folder, the arduino won't recognize the library. on You should get a shift register chip to reduce the amoun Then, locate the "arduino" folder, and open it. You can check this by looking at the back of the display. If you attach a motor to a switch (VCC --> button--> motor --> GND) so that the motor spins when you press the button, whenever you push the button the seven segment resets.

The instructions so far work and don’t burn out any LEDs so perhaps your solution will save some power?? Reply Most displays have 12 breakout pins that connect either directly to the arduino, or through a resistor. I just went through the library and in the definition for the begin() function I see the parameter "bool resOnSegmentsIn=0" you were talking about.
However, a soldering iron and a pcb board would be needed for a more permanent use.Just to give you some context i will explain the usage of each pin. Finally drag and drop the installed library into the just opened libraries folder. I had the 11 and 12 wires switched the wrong way (I accidentally overlooked your warning ;) ) but after switching the two numbers in the code, it works.What if i want to make it into a clock? Sadly only one of the two is fixable.Do not worry this is the problem that is fixable, just follow these steps1. That means every digit is displayed for 4096 us. It works well. Digit 1 always displays segment a. any ideas also is there any way I can edit the library???? I found that with my display I either had to change the cpp file's mapping on all the g and f pins, or change the segment pins layout (swap 11 and 12, which correspond to the g and f segments) or the easiest way, just swap the wires. If you do not see a black mark anywhere than you switched up wires that can't get overpowered so check the schematic and plug then in correctly and change the code back from 8888 to 3.141.One method of using a few pins on the arduino to control multiple LEDs that would otherwise require alot of pin is a tri-state 8 pin shift-register. Do NOT follow this tutorial.

Cet afficheur possède 12 entrées, connectées à 12 des sorties digitales de l'Arduino. Note the placement of where the resistors are because if you connect the resistor to the wrong pin on the display, either that digit will not work or that segment will not work, FOREVER...When setting up the circuit switch the yellow and the purple wires (I messed up my circuit diagram).The library linked below is from the arduino website for easily controlling a display.