工具与资源github.com
Bob 洗衣胶囊倒带器：破解洗涤剂 DRM
Bob Cassette Rewinder: Hacking Detergent DRM
2021 — 2024，它一次次回到首页
黑点是上首页（≥ 50 分）的那次投稿，空心点是没冲上去的投稿，点越大分数越高。
导读
这是一个开源硬件项目：作者逆向分析了 Bob 小型洗碗机专用的洗涤剂盒（cassette），破解其芯片或计数机制，让用户可以把用空的盒子重新灌装自制洗涤剂，而不必反复购买原厂耗材。仓库包含拆解分析、电路与代码，属于典型的"绕过耗材 DRM"实践。
为什么经久不衰：它把"耗材锁死"这一商业模式拆开摊在桌面上，是维修权（Right to Repair）与反 DRM 讨论中一个具体又好玩的技术样本，今天读来依然有现实意义。
HN 评论精选
厂商用专有零件和技师认证抬高维修门槛，逼用户换新机，而通用件其实便宜得多。
我家那台用了七年、花了 1200 美元的 Miele 洗碗机几个月前坏了，启动时"进水/排水"灯变红。疫情期间大家都在装修，洗碗机很紧俏，专业维修光诊断就要 300 美元，所以我决定自己修。结果发现是进水阀的电磁线圈卡住或粘住了——直接给它加 120V 也没反应。上网找原厂替换件，发现要 580 美元，只有两家在卖，还都缺货，而且必须是有认证的 Miele 技师才能买。我从型号和电磁阀上印的电压、流量参数知道了规格，就在亚马逊上买了最便宜的替代件，把线接到原来的线束上，一装就好了。我不理解的是，为什么会有这么多功能完全相同的进水阀：只有 120V 交流和 12V 直流之分，其余区别只是水管接头和支架。现实是这个电磁阀本身极其通用，本该只值 20 美元、做成通用件适配所有机型。当然现在没人修东西了，我觉得这就是原因：哪怕零件本可以像灯泡一样标准化替换，厂商还是想让你整台换新。
boatsie查看英文原文
My $1200 7 year old Miele dishwasher stopped working a few months ago, with the “Intake/drain” light on red when starting a load. Dishwashers during the pandemic were sort of scare due to massive home remodeling demand, and the professional repair people would have cost $300 just to diagnose, so I went to try to fix it myself. It turns out the water intake valve solenoid was jammed or gummed up somehow, as applying 120V to it directly had no effect. I went to find an OE replacement online only to find that they are $580, sold by only 2 places, and sold out. You need to be a certified Miele technician to buy them. Given I knew the specifications from the model number and the printing on the solenoid itself wrt voltage and flow rate, I bought the cheapest replacement I could find on Amazon, spliced the wires into the existing harness and boom, it worked perfectly. One thing I didn’t understand was why there were so many different inlet valves that all did the same thing. There were 120V AC and 12V DC versions but other than that the only difference was the water connector/dongle/bracket. It seemed absurd there would be so many but the reality is that actual solenoid is super generic and should only cost $20 and should be made to fit them all. Of course nobody really repairs things these days but I think this is the reason why. Even when the part could easily be standardized and replaced/repaired like a light bulb, companies want you to buy a whole new one.
赞赏文章的技术宅气质，同时质疑这种专有洗涤剂盒在英国市场到底有什么价值。
这才是真正的黑客新闻！有意思的是这件事发生在英国……我基本确定大多数带家具出租的房子都配了全尺寸洗碗机，房子也都预留了管路，不知道市场在哪。尤其是它主打"不脏手"，可我们的洗碗机本来就能直接用预分装的洗涤块。总之我特别喜欢这类博客文章：动手折腾、有点调皮，还带着满满的技术含量。
sirsinsalot查看英文原文
Actual news about hacking! It is interesting that this is in the UK ... i'm fairly sure most rents come with a full-sized dishwaster when furnished and all properties have the plumbing for one. I'm not sure what the market is. Especially that one of the main value adds was "no mess" when our dishwashers all accept pre-form tablets for detergent. Anyway, I adore these kinds of blog posts. Tinkering, naughtiness and a big dollop of technical knowhow.
洗涤块的主要成分其实就是 NaOH，自制洗涤剂在化学上完全可行。
太佩服这种偏执劲儿了！顺带一提，整个啤酒酿造行业都靠 NaOH（氢氧化钠）做清洗和消毒。但处理它可不像洗碗机厂商想让你相信的那么环保——在大多数地方，你要是把大量 NaOH 倒进下水道是会惹上大麻烦的。补充：我刚查了我们一直用的洗碗机洗涤块的成分，确实主要是 NaOH、惰性载体（Na2SO4）、各种软水剂、保持块状的包装膜（但可溶），以及少量助剂酶、香精和增白剂。看来一茶匙 NaOH 大概也一样管用。😀
mikro2nd查看英文原文
Loved the obsessiveness! FWIW the entire beer-brewing industry runs on NaOH for cleaning and sanitising. Disposing of it is not quite as environmentally-friendly as the dishwasher manufacturer seems to want you to believe -- in most places you'd be in serious trouble if you poured any significant quantity down the drain. eta: I've just looked up the constituents of the dishwasher tablets we've been using, and yes, indeed, they're mostly NaOH, an inert carrier (Na2SO4) and a variety of water-softeners, packaging films to keep everything in tablet form (but soluble) and a small number of helper enzymes, perfumes and whiteners. Looks like a teaspoon of NaOH might work justabout as well. :D
标准洗涤块既便宜又方便，专有洗涤剂盒在便利性和环保上都没有优势。
洗碗机用专有洗涤剂盒？这太离谱了。而且我也不懂"不用自己量洗涤剂"有什么好处——我一直用标准的"多效合一"洗涤块（一块一次），每次洗涤大约 0.15 欧元，每隔几周只需加一次软水盐。洗涤块可以 100 块一大袋散装买，没有单独包装（包装在洗涤过程中就溶解了）。不用把盒子寄回去重灌，也不用复杂的回收。我们又在重复发明轮子了。
Daniel_sk查看英文原文
Proprietary cassettes for dishwashing machines? That's next level. Also I don't get the advantage that you don't need to measure the detergent level, I have always used standard "all-in-one" tabs (1 tab = 1 wash) for my dishwasher, they cost around 0.15 Euro per wash and they only thing I need to add ever few weeks is salt (due to hard water). You can buy the tabs in large packs like 100 in one plastic bag and they are not individually packed (the packaging dissolves during the wash). No need for shipping back the cassette to refill or complicated recycling. We are reinventing the wheel again.
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