Macy’s played a significant role in popularizing Christmas consumerism through events like the Macy’s Thanksgiving Day Parade and their holiday displays. The first parade was in 1924.
It was around that time Christmas was portrayed as a shopping holiday. It was such a successful marketing campaign that the rest of the holidays were sure to follow.
There are fewer people at Lemmy who only exist to blast threads with tired old jokes and memes so there is room for well thought-out comments to get more visibility.
I come here for discussions and so far most of the posts seem to welcome it, leading to more desire to engage.
I’ve not used any alarm at all for the past 20 years. It’s amazing. I just automatically wake up at the same time every day. And go to sleep about the same time every day.
Ok, good thinking. I settled on 1000Hz and also made it something in remotely reconfigure should the need arise. That combined with the other suggestions, and getting a better power supply has made the system whisper quiet now.
Interesting suggestions, I would not have tried such low frequencies except based on your suggestion and it turns out that going very low, below 1000Hz and even down to 100Hz causes the power supply whine to almost entirely go away. I also have a 470uF capacitor in between the power rails now too.
This range is a usable - there is no visible flickering even at very low duty cycles.
From what I understand in the reference guides the LEDC library attaches directly to the 80mhz or 40mhz esp32 hardware clock for PWM. Intuitively I’d have guessed that higher frequency would always mean less discernable audible feedback, but seems not in this case.
Thanks for typing this up! This helps me understand a lot more about what is going on.
I may have purchased too large of cap for the first try: 470uF. I bought it online so still waiting for arrival. I’ll get some in the 40uF to 200uF range for more testing
I think the limitation is my own knowledge of this LEDC library. When I run it with the frequency value of 25,000 it doesn’t output anything on my GPIO pin that I can detect with my multimeter.