Blog
JO

johnnie

@johnnie (41.67)

Hello! I mixed up chemicals sold as metal finishing products for decoratives and printed circuit board industries in past. Now semi-retired and look around.

Hong Kong
Joined June 2017
495 Followers90 Following242 Posts33 HP
johnnie
johnnie(25)•in #cn•

DIY 小米智能家居功能擴充（爆水管關水掣例子）

淘寶買個 [紅外線（IR）無線射頻（RF）轉換器]，（小米萬能遙控）除控制红外缐設備外，亦可擴大到控制其它無缐射頻组件。 這裏加配上一個無線遙控的90度水掣開關機械手，小米的水浸警報器在水浸時，除了在網關發出警報聲及信息推送到手機外，更可以指示機械手搖90度關上水掣！ 片中的水開關掣還未装上水管，只装上機械手，用作反應...

2
0
$0.00
johnnie
johnnie(25)•in #cn•

DIY 的小愛同學人工智能

家中来了個肥大的小米空氣過濾，實無空間容下小愛，只有賣左佢比個有錢嘅大户人家......有點傷感！ 不過我呢個有錢啲朋友買小爱之前，問她可不可以控制芭蕉扇，我說她可以控制這部一萬mA電量的大風散熱扇，他才買！不過相信佢回家重置小爱後會後悔，因為其實小爱都幾蠢！ 睇片要開聲才知道做什麼 https://youtu.be/...

3
0
$0.00
johnnie
johnnie(25)•in #cn•

DIY air filtration unit - 自製空氣過濾器

The serious air pollution in the city can lead to various health problems. Here I use a simple method to create a home air refresher of my own. 城市空氣污染嚴重, 可以引致各種...

1
0
$0.00
johnnie
johnnie(25)•in #chemical•

Experience of being attacked by chlorine gas

Somewhat 30 years ago, I worked in a laboratory of a US chemical company. One day a worker put back unused hydrogen peroxide mistakenly into the a drum of Hydro...

6
0
$0.00
johnnie
johnnie(25)•in #cn•

Silver protective coating of nano molecular thickness

Take a record here for an old article I issued by making use the absorption property between silver surface and carboxylic/thiol portion of organic alkyl molecu...

4
1
$0.00
johnnie
johnnie(25)•in #cn•

Chinese new year red pocket with BTC - 中國新年的比特幣紅包

It's a custom to give red pocket with money inside from senior to the young during Chinese new year. This year I give this to teach them to know more about the ...

1
0
$0.00

Tags