u/yonside

I'm working on a project and I need really small addressable RGB(W) LEDs. I can only find addressable LEDs as "whole units," i.e. controller/driver AND the LEDs in one package: WS2812B, APA102, SK9822, etc. These devices - discrete or snipped from a strip - are too large. I can find discrete RGB LEDs in a 3mm package (smaller if I use an SMT piece, e.g. SMD 0805) but they're just dumb LEDs. If I could buy the controllers/drivers separately, I could put them on a PCB then run wires to each of the LEDs and place those where needed.

Can you buy the controller/driver as its own part?

Apparently this is not a new issue but it's new to me. Finding information on this issue has proven impossible. I don't understand; I have had no issues whatsoever using Brave with other websites but it absolutely refuses to work with Pinterest. Why? Is it me? Is it my Brave settings?

FWIW, Pinterest works fine in Firefox but ... I don't use Firefox (anymore), I use Brave.

This is brain-dead simple; what am I doing wrong? bash 5.2.37(1)-release

$ mkfifo the_fifo

file r:

#!/usr/bin/env bash
while true ; do
	read -t 1 <the_fifo
	ec=$?
	echo "EC $ec"
	if [ $ec -eq 0 ] ; then
		echo "value=$REPLY"
	elif [ $ec -gt 128 ] ; then
		echo 'TO'
	else
		echo 'error'
		break
	fi
done

file w:

#!/usr/bin/env bash
while true ; do
	echo $RANDOM >the_fifo
	sleep .5
done

When I run r in one terminal session and w in another terminal session, all is good. If I quit w then r blocks forever on the read; why? What am I doing wrong?

What the ... !

I have a Cardputer ADV. (I'm new to this.) I downloaded, installed, and registered M5Burner. I installed M5Launcher (v2.6.8) to the device via M5Burner. I go into M5Launcher and I want to install things over the network. I choose "OTA" or "WUI" - it scans for WiFi networks, finds mine, I select it, it tries to connect and fails. It never asks for a password.

I do a web search on how to setup WiFi on the Cardputer and I get stuff like "To set up Wi-Fi on the Cardputer ADV, you need to access the settings menu and configure the Wi-Fi SSID and password for your device connection. Make sure to follow the instructions in the M5Burner tool to bind your device to your account before configuring Wi-Fi."

Settings where? Cardputer? M5Launcher? M5Burner? - Doesn't matter: none of those has a "settings" feature. Launcher does have a "CFG" option; it has no WiFi entries.

When I go to the M5Launcher GitHub, it makes no mention of "settings."

Then I get things like this: "To bind your device in M5Burner, connect the device to your computer, log in to your M5Burner account, and follow the prompts to complete the binding process after successfully burning the firmware."

At no point in the downloading, installing, or registering M5Burner was I prompted for anything other than user name, email, and password. Nothing about my device and certainly nothing about "binding."

I'm confused. How do I connect my Cardputer ADV to my WiFi network?