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Another irregularly-spaced LED project. (See my last one here: LED Display with Irregular LED Spacing)

This was a quick one-day holiday project with some cardboard, paper, a Teensy 3.1 and the...

This is great thanks! I thought FastLED was a driver like OctoWS2811 but the fact that I can use the FastLED API and OctoWS2811 driver is great.

So far I only tested FastLED with my LED strips...

I also have this question.

Since the product page says the following, I am not optimistic:


This adaptor board connects Teensy 3.2 - Teensy 4.1 to thousands of LEDs using the OctoWS2811...

To be more clear, this is my current setup:

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I'm wondering if there is a better (easier, faster, more reliable) way to handle the communication between the Raspberry Pi Zero and the two...

Yes! Same project. It’s been working quite well for a few years but I’m struggling with a few communication issues. E.g. trying to get the RPi (master) to send the data for all LEDs to both...

Just returning to this post to ask a follow-up question. I just learned about I2C protocol:



Any reason why this wouldn't be a good idea for my application here?

Hi Epyon. Where did you get this 90-degree angled sockets (2 rows of 6). I am looking all over DigiKey and can't find something similar. I need 2 rows of 7 to mount on an OctoWS2811 Adaptor.

You mean these:
https://www.digikey.ca/products/en?keywords=SAM1093-14-ND
DigiKey Product Number SAM1093-05-ND
(I assume I need the one with 14 positions not 5).

Thanks! Fortunately I managed...

Unfortunately I had to solder it down due to height limitations. Since we're on the topic, the 14-pin sockets that come with the Teensy are pretty high. Can you get shorter ones so that the Teensy...

Thanks, I didn't know that using A8 was possible. I tried it but it doesn't solve the problem.

I tested the voltage at pin 22. It's 2.51V when the photocell is connected and 0.00 when I had the connecting wire across the pins as shown in the photo above. (Board VIN is 4.76V, and the 3.3V pin...

I'm trying to use analog input on a Teensy connected to an LED array so that I can add a photocell to adjust the LED brightness.

I made a simple test script and it works on one Teensy 3.1 but when...

Excellent. Thanks. That is what I will do then. Sorry for the misunderstanding.

Okay. Sounds like I don't know what I am talking about... I guess I need someone to tell me how to do this.

Here is the tutorial that I was following that lead me to the idea that I needed a...

I'm not too good with electronics but I was reading a tutorial on using a light sensor and it suggested using a 10k resistor in series with the light sensor. I think this is to avoid excessive...

Thanks @tonton81 but can you please confirm exactly how to implement that in the code? Do you mean use pinMode(14, INPUT_PULLDOWN); in the setup() part of the code? Will that add a pulldown...

I assume the answer to this is yes (only for digital input) since I can't find any reference to using a built-in pull-down resistor on the analog input pins here or here or on this forum.

If...

Thanks KurtE. I may look into that method but I already solved that problem. I used some serial communication whereby each Teensy is asked to report who they are and then they are thus identified...

Project is coming along and I have all three devices communicating now!

I have been using my own protocol for serial communications between the devices but now I want to open up the code to...

Thanks Paul. Is this the kind of thing you are referring to?

MICROCHIP EVB-USB2512BC USB2512B High Speed USB 2.0 Multi TT 2 Port Hub with Battery Charging Support Customer Evaluation Board,...

Thanks PaulStoffregen. This is great. My Teensy's are right next to each other so I will connect the Serial1 pins directly. Also, I'll investigate what a Multi-TT USB hub is because I was just...

Thanks GremlinWrangler. This is really helpful advice and I am investigating your recommendations. Much appreciated.

Hi, I'm looking for some advice on the best way to connect up two Teensy controllers and a Raspberry Pi 2 in different configurations.

The Project

I'm building an irregular array of about 1600...

Here is my revised Basic Test code if anyone else wants to test a new strip of LEDs without blowing their power supply:


/* This is a variation on the Basic RGB LED Test provided
by Paul...

Actually it was the third one in the first strip! This was one of three that I separated from the other boards so perhaps I damaged it when I did that.
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Thanks nclecaude and potatotron.

I guess I thought I could test this out with a couple of LED strips and my breadboard before buying a power supply! Clearly not.

I did try a simpler test...

Is it something to do with power consumption? I have 2x 50 leds running off the teensy which is plugged into my MacBook Pro via USB. Should I be moving to a dedicated 5V power supply?

I am new to Teensy and LEDs and I am also getting wierd results.

My setup:
Teensy 3.1
Arduino 1.05
Teensyduino 1.19
2 strips of DC5V WS2811 pixel nodes, 50node a string
Hardware connected as...