johnnie

baking powder 500g water - minimum coke 2 cans

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，用作反應水浸警報器作效果试驗。

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

What left behind after one month. 一個月後留下的東西

Test before installation

USB charged or powered small equipment are my favorite. One may feel psychologically safe due to the low voltage (5V). They also offer great convenience and portability when you are away from domestic

As history proved, fake and wrong data are always used by groups of people to start attack. If the rules of A.I. and data input are controlled by such people, it will be a tragedy for human beings. Just

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, 可以引致各種健康的問題, 這裏我用一個簡單的方法製造一個家用的空氣清新機.

Do you recognise the man wearing a white T-shirt and sitting on an mouldy plastic chair. I admire the Philippine President Duterte most among the current foreign Presidents. All that I can feel he is warm

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 Hydrochloric acid. Chlorine evolved with the following

This is another old article I wrote in a technical Chinese magazine. The following is a short summary of the content. Aluminium metal will rust with oxygen in air to form white rust of aluminium oxide.

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 molecules to form protective layer in a Chinese

Flowers come in bloom. Insect hunters built their net works everywhere. However this seems to be too large to catch.

This snapshot from my mobile phone looks so general. But after looking closer, I found that it is useful to teach my son how to distinguish mouth and feet of a butterfly.

Someone gifted me this ancient Chinese butterfly knife over thirty years ago. I discover till today that it can function as photo design tool.

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 world and possibly let them become a millionaire

The world would be more peaceful!