I'm fascinated by the design of the rewinder. Could someone provide me with some guidance on where to begin learning how to design a board like this?
Bob_cassette_rewinder
21–30 of 115 posts
Re: Bob_cassette_rewinder
#22Don’t use rinse aid products, some have been found to damage the lining of your intestines at extremely low concentrations. Personally i never even noticed a difference when i did use them. https://www.aaaai.org/tools-for-the-public/latest-research-s... .
Personally i never even noticed a difference when i did use them I always thought rinse aid was only needed if you have hard water. We have pretty soft water and like you, I found that rinse aid made no difference at all in drying performance or preventing water spots (we have no water spots even without rinse aid).
Very hard water here. There’s a tank for salt in the bottom of the dishwasher, as long as I keep that topped up there’s no need for rinse aid.
Re: Bob_cassette_rewinder
#23It is very ironic that they sell it has "eco-compact dishwasher" when it require disposable chunk of plastic to use it. The amount of water saved will really not make up for the amount of plastic thrash created.
From their website: "At Daan Tech, we’ve always believed that a more sustainable and fairer world is possible.", you really have to be cynical to write something like this and then sell a worse washing machine that generate lot of plastic waste.
Re: Bob_cassette_rewinder
#24I'm fascinated by the design of the rewinder. Could someone provide me with some guidance on where to begin learning how to design a board like this?
It's quite a basic circuit board. Start with an Arduino tutorial to get a feeling of hooking up electronics (Adafruit is probably a good start), once you've got it working look up a KiCad tutorial to turn it into an actual PCB.
The trickiest parts here are dealing with the MCU (look for example schematics to copy, they're probably already in the datasheet), sourcing parts (Mouser/Farnell/Arrow are expensive but have good search tools - LCSC is dirt cheap but has terrible search), and soldering the PCB (stick with through-hole parts, if at all possible). You can get a bare PCB of this size made at JLCPCB or a dozen other places for less than $5 - not including shipping.
Re: Bob_cassette_rewinder
#25I'm fascinated by the design of the rewinder. Could someone provide me with some guidance on where to begin learning how to design a board like this?
It's quite a basic circuit board. Start with an Arduino tutorial to get a feeling of hooking up electronics (Adafruit is probably a good start), once you've got it working look up a KiCad tutorial to turn it into an actual PCB. The trickiest parts here are dealing with the MCU (look for example schematics to copy, they're probably already in the datasheet), sourcing parts (Mouser/Farnell/Arrow are expensive but have…
Thanks for the tips!
Re: Bob_cassette_rewinder
#26It is very ironic that they sell it has "eco-compact dishwasher" when it require disposable chunk of plastic to use it. The amount of water saved will really not make up for the amount of plastic thrash created. From their website: "At Daan Tech, we’ve always believed that a more sustainable and fairer world is possible.", you really have to be cynical to write something like this and then sell a worse washing machin…
[deleted]
Re: Bob_cassette_rewinder
#27It is very ironic that they sell it has "eco-compact dishwasher" when it require disposable chunk of plastic to use it. The amount of water saved will really not make up for the amount of plastic thrash created. From their website: "At Daan Tech, we’ve always believed that a more sustainable and fairer world is possible.", you really have to be cynical to write something like this and then sell a worse washing machin…
It doesn't require the cassettes. You can use regular detergent.
Re: Bob_cassette_rewinder
#28It is very ironic that they sell it has "eco-compact dishwasher" when it require disposable chunk of plastic to use it. The amount of water saved will really not make up for the amount of plastic thrash created. From their website: "At Daan Tech, we’ve always believed that a more sustainable and fairer world is possible.", you really have to be cynical to write something like this and then sell a worse washing machin…
> "At Daan Tech, we’ve always believed that a more sustainable and fairer world is possible.", you really have to be cynical to write something like this
I tend to assume incompetence rather than malice. The marketing person that wrote that piece of copy never worried about the lifecycle waste analysis of the project they were working on, because they trusted the CEO/founder that hired them, who said it was gonna be good for the environment. They probably aren't the type of person that worries about nor has the skills to do a lifecycle waste analysis.
Re: Bob_cassette_rewinder
#29It is very ironic that they sell it has "eco-compact dishwasher" when it require disposable chunk of plastic to use it. The amount of water saved will really not make up for the amount of plastic thrash created. From their website: "At Daan Tech, we’ve always believed that a more sustainable and fairer world is possible.", you really have to be cynical to write something like this and then sell a worse washing machin…
Permit me to disagree with about all of your conclusions here.
First of all, the cassettes are returnable. This is also mentioned on their website. * https://daan.tech/discover-bob-cassette/
> Each Bob cassette is returnable and reusable. We refill them and put them back on the market. Close the loop, lower your carbon footprint.
You're also NOT required to use the cassettes. You can just throw standard dishwasher tablets in. This is mentioned in Bob's manual, and probably on the website as well. I've been doing this for years and had no issue. There is no DRM-like aspect to Bob.
And finally, it's not a worse washing machine as you say, it's just smaller and more flexible (wrt plumbing), and as Techmoan mentions in his intro, this is a very strong advantage of Bob for people living in small European apartments.
(source: owner of Bob)
Re: Bob_cassette_rewinder
#30Every time this gets posted to HN, the comments go straight for "DRM bad!", when the Bob dishwasher does NOT in fact require you to use the proprietary cassettes.