It is. All recipes I have seen use weight. It wouldnt surprise me to see an american recipe use "2 bald eagle heads worth of sugar".
Norodix
First time I hear about inkstitch. Looks great!
A study comparing the environmental impacts of various single-use beverage containers has concluded that glass bottles have a greater overall impact than plastic bottles
But... but... Glass is not single use. That is the whole point. I don't like this article.
Have you heard? The release candidate of 1.0 dropped just a few days ago. It looks very interesting.
It might still be okay. My biggest fuckups were forgetting to put the thing in the fridge overnight. It balooned to 2x its normal size and it was extremely sour. Basically a big lump of starter.
In my experience the first thing that always fails is the scrollwheel. My g500s is going strong after about 10 years because it uses an optical scrollwheel instead of a potentiometer. I think this is a very important difference BUT IT IS NOT ADVERTISED OR DISPLAYED ANYWHERE WHEN YOU WANT TO BUY A MOUSE. Ridicolous. Soooo annoying. I hate marketing.
No problem :) Let me know if you need any help!
I don't think the PWM on the arduino is slow for your application. Motors are actually great for filtering. Even if the current is not filtered, mechanically it is so slow that you can go as low as 100Hz and still drive the motor acceptably well.
I also worry about the LM7818. It drops about 6V, so at 330mA it burns 2W, which seems like the maximum for the package that I quickly pulled up. If you have a very efficient buck converter that gives you at most about 1A to drive the motor. Not a lot of overhead.
Also as I said already, you could just skip the whole thing and make everything work from the 24V using PWM. Since you want to drive it with an arduino that is not a difficult thing.
If I were you, I would not step down the 24V, but use that to drive the motor with pwm. It requires a bit different H bridge but overall it would be simpler. But if you already have a converter module that is good enough this works too.
In that case I would omit the extra transistors and use only the optocouplers.
What sort of application is this? Having 18V somewhere and a 5V supply too that can output several amps is quite unusual.
Also most liquids are water basically, so you can just convert it 1:1 to volume if you want to use a measuring cup.