Hello!
I'm a noob in the Arduino world, and I'm looking for some ready made 3, 4 and 6 digit displays, like the 8 digit displays based on the MAX7219.
Do they exist? And if not, can someone guide me into making some?
I saw some 4 digit max7219 modules on AliExpress, but only in lots of 10.
It's not impossible to make your own, for example using stripboard or tri-pad board. One max7219 can drive up to 8 digits, as you know, and you can cascade the chips to use the same 3 Arduino pins. Alternatively there are ht16k33 modules which can drive up to 16 digits each which can also be cascaded using the same 2 Arduino pins.
What is your level of experience with electronic construction/soldering?
What equipment do you have?
How many displays of how many digits do you want to construct?
I'm very new to it all. I learn fast, and think I have watched a lot of youtube.
Can i use these two to make displays?
http://www.icstation.com/max7219-matrix-display-module-suite-control-kits-53215cm-p-11102.html
http://www.opencockpits.com/catalog/digits-assembled-units-colour-amber-p-266.html?cPath=24_56
I know i dont have diagram, but I shpuld be able to, right?
Did you read my last reply?
PaulRB:
Did you read my last reply?
I did yes, sorry.
I'm just really interested in using a MAX7219 and a the linked 7 segment display, to see if I understood it correctly.
I mean, I should be able to finish the MAX7219 DIY, throw about the 8x8 matrix, and connect the 5 digit 7 segment, with the PCB it sits on, right?
Sorry, if it doesn't make any sense.
Peter_Storm:
I did yes, sorry.
Oh, OK. I was hoping you might have given some answers to my questions. I could help you better if I knew those things.
Peter_Storm:
I'm just really interested in using a MAX7219 and a the linked 7 segment display, to see if I understood it correctly.I mean, I should be able to finish the MAX7219 DIY, throw about the 8x8 matrix, and connect the 5 digit 7 segment, with the PCB it sits on, right?
I would not buy those. It would be a waste to throw away the 8x8 matrix. The 7-seg displays you linked to may not be the best for compatibility with max7219. The website fails to give important information about the displays, as Mike pointed out in your other thread. Also they do not seem to be a good price.
I would purchase a large breadboard or two, decide which driver chip to use based on the total number of digits I wanted to have, choose displays appropriate to the driver chip, and build a prototype.
Peter_Storm:
http://www.icstation.com/max7219-matrix-display-module-suite-control-kits-53215cm-p-11102.html
Hard to cascade.
Peter_Storm:
http://www.opencockpits.com/catalog/digits-assembled-units-colour-amber-p-266.html?cPath=24_56
Those digits are 7-segment and not 8x8 LED matrix that is in the first product.
You may want to look at this http://www.ebay.com/itm/MAX7219-Serial-Dot-Matrix-Red-Display-Module-4x-8x8-LED-for-Pi-Arduino-/352110075224 which has four (4) 8x8 which looks to be pre-assembled.
ieee488:
Hard to cascade.Those digits are 7-segment and not 8x8 LED matrix that is in the first product.
You may want to look at this http://www.ebay.com/itm/MAX7219-Serial-Dot-Matrix-Red-Display-Module-4x-8x8-LED-for-Pi-Arduino-/352110075224 which has four (4) 8x8 which looks to be pre-assembled.
I know, but I can still use the PCB, and the MAX7219 chip, right? All I need is to connect the 7 segment to the right outputs of the 7219 - doesn't have to be a 8x8 LED. I'm just buying that set, because it's cheap, and it gets me a PCB and the MAX7219.
Peter_Storm:
I'm just buying that set, because it's cheap, and it gets me a PCB and the MAX7219.
But the displays you gave the link to were not cheap, and the page does not specify if they are Common Cathode (easy to use with max7219) or Common Anode (difficult to use with max7219).