Hi folks . Still pretty new to all this but it's very exciting to see what can be done I recently bought a couple f items on Amazon prime day to create a small led sign which will simply scroll some text. Initial research led me to believe this wouldn't be extremely difficult but I may have been wrong . Had to pull the trigger before the sale ended.
What I bought ( I'll try and include Amazon links ) was a 2 pack of BTF-lighting WS2812B ECO RGB flexible 16x16 LED matrix panels and an ALITOVE 5V 15A power supply
website says you can use an Elegoo UN R3 which I have ( also have an Arduino UNO R4 WIFI )
Wired up the 2 panels together according to the documentation I could find
Currently The Alitove power supply runs to the center set of wires in a parallel circuit and the 3 pin JST ( the one marked with DIN] goes to the UNO 5v, ground and pin 6. Then connected the other JST plugs together For Data transfer). This only works one way. Watched a ton of videos ( a lot of which suggested an SP32 board) but can't get any more than 2 LEDS on each panel to light up (same 2 on each panel in the corner)
Is this a case of mismatched hardware or not using the right libraries?
15A !? you are lucky if it 6A capable.
and when someone want to save money he build matrix by himself:
UPD: ha! i knew it !
Always show us a good schematic of your proposed circuit.
Show us good images of your ‘actual’ wiring.
In the Arduino IDE, use Ctrl T or CMD T to format your code then copy the complete sketch.
Use the < CODE / > icon from the ‘posting menu’ to attach the copied sketch.
I've seen a few videos of people making their own and using an SP32 Then using an app on their phone to simple type whatever text they wanted to scroll. Looked pretty easy in the video but then it always does. As I said it was prime day and it was all on sale . It's Amazon. I'm not opposed to sending it back
. Considered getting the Adafruit matrix but they look completely different.
Question: would I really need a lot of amps with just scrolling text and not filling it up with all white? Just asking
just too expensive, no other difference to another WS2812B strips or matrix's and same powering rules.
I'll agree that Adafruit stuff is pricey but it probably just works..Rough calculation says I would need 5 of those rolls to fill the same sized panel so not cheap as just $12.83. Not here to argue. Just seeking advice .. What example sketch should I try to at least verify that the panels are good. Or send that stuff back and get this and this and use this library etc
To be honest I can't seem t find an example that seems fitting
Well sir . You were very nice and friendly last week to help me with my last problem and I appreciate that a lot. Just to let you know I did get this working with 2 lines of text so far . I'm going to learn more and work on coloring and if possible making the two lines scroll at different speeds.
To anyone else out there who may have this trouble I highly suggest starting with the following web site
Cyan Infinite - Scrolling text with flexible 32x8 RGB LED Matrix
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