I have some blue LED dots. I’m not using tiny fx, rather my own circuit.
What forward voltage and max current are they rated at please?
This is stuff from China so you won’t find official specs. With 5V I measured 19mA (red and blue) and 15.8mA (warm-white). Note that there are USB power-cables for these Lego-lighting kit LEDs, so I think they are meant to be used with 5V.
@bablokb When used with a TinyFX they are powered by 5V. And I do believe they have a series resistor wired in at the LED end.
Very helpful, thanks @alphanumeric @bablokb
Indeed, I missed the resistors. The SMD-LEDs are already very small but were visible with bare eyes, but the resistor is even smaller.
I am also using these dots in my own circuit for my current project: GitHub - bablokb/christmas-pyramid: A 3D-printed, Motor-driven Christmas Pyramid. The blue lights on the first floor are TinyFX dots, the spots on the second floor are also TinyFX compatible. Pimoroni does not sell them, but AliExpress does.
I also had to design my own PCB because I needed four pins for the motor.
@hel , @ZodiusInfuser : can we have a not-so-tiny FX board that exposes all the free pins of the RP2040? If I look at the schematic, there are currently 8 unused pins. Added bonus: instead of six different connectors on a single PCB you could add one more 😂️. And a connector for the reset button would also be very appreciated. That would probably be world record and maybe a very good reason to design such a board.
There were early designs for some kind of “Super”-FX that could do more, but I couldn’t lock in on a feature set that I was happy with, that was enough of an upgrade over the Tiny FX. Increasing the number of LEDs was an obvious choice, but having it do more types of FX would have been nice.
Motor driving had been considered but given the construction-brick focus, it was unclear how to achieve that (servo connectors, onboard motor driver, SP/CE connector with motor driver breakout, etc).
Happy to get ideas (not necessarily in this thread). Perhaps something will spark that product again.
A Plasma FX would float my boat. Add the TinyFX functionality to a Plasma Stick.