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little2large
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Have this strange experience that Keepass Add entry Popup keep re-launching and refuse to close off selecting the “X” or “Close” button.
Other strange encounter is the disappearance of “insert” behaviour using the keyboard. Keyboard also fired up paste function when I press the “shift” key.
All symptom point to keyboard problem. I’m using a bluetooth keyboard. Tried rebooting the computer does not help. Re-inserting battery on keyboard doesn’t help.
Eventually, the move that help is disabling bluetooth on Windows 10 and re-enable.
Hope this will last. Lets observe.
Updated : 23 Nov 2016.
Problem persist. Even after changing to a USB keyboard. Searching through web and finally located the problem with keyboard not properly fasten on my notebook. INS key stuck. Stable for more then a day now.
Updated : 1 Dec 2016.
Finally, nib the bug. physical hardware problem with the build-in keyboard of the notebook. Ordered one replacement keyboard from taobao.
Space is expensive – less space for storage. Reduce in cubicle size. Paperless. Optimize packaging. House IT off premise.
Manpower is expensive – Multitask. Streamline workflow. Improve productivity.
Travel is expensive – conference in electronics means. Remote support.
Cost of vehicle is expensive – Outsource transport
开源节流
Business objective. – produce basic human needs. Survival. Food. Clothing. Roof above head. External Entertainment. Internal Spiritual.
High Volume Businesses – Kids and women business. Education. Clothing. Entertainment. Food.
Beside new market or technology. There is always new entrants to old market.
Name-card printing. Can I be local printer for global setup.
Hostel – Takeover existing business.
Had a tough time fixing this up, thought it is simple, since it comes with full instruction.
As seen, I got it wrong, the dimention and 5mm hole is meant for the guiding nuts, not screws.. End up my door is way too low and out from the shelf.
After reealising my mistake, the retrofit is a breeze.
The door is “balanced” meaning that it can hold in place at any position.
Below are data collected on the charging behaviour.
The whole exercise sparks from the observation that MPPT solar charger recording a mean 6-9W Solar output from my 2 x 150W solar panel in full sun coverage. It strike me that when the battery bank is full, we don’t pull the full power out from the panels. I want to know how much power the solar panels can push out at different time of the day, especially when I’ve only 3-4 hours of direct sunlight, is it sufficient to charge up my battery bank.
[table] Time,Panel(W),Battery(V),Load(W),Charging(A)I’ve 2 X 12V7.2Ah battery in the bank ~ 14.4Ah.
Day 1 test, Battery provided power to the LED strip after sun down for 3 hours. est 8.7Ah (2.9A for 3Hr), about 70% drain.
Day 2 charging, without load, both battery got fully charged well before 3pm. All this without direct sunlight.
The Panels should have lots of juice left to charge more batteries. Will build a bank of 10×7.2Ah battery to provide 12hours growth light for this system.
Lets compare cost effectiveness between Car Battery and SLA Battery in Solar Storage Project.
In Singapore, a new 12V45Ah Car Battery cost $100, while a new 12V7.2Ah SLA Battery cost $19.
For SLA Battery, 12V7.2Ah is the sweet spot, its most common and has best Px/Capacity ratio compare to other voltage/capacity combination.
[su_table]| Compare | Car Battery | SLA Battery |
| Type | 12V45Ah | 12V7.2Ah |
| Price | $100 | $19 |
| Save Discharge | 30% | 80% |
| Usable | 13Ah | 5.76Ah |
| Size | Big 207Lx175Wx190H 30KG | Small 150Lx65Wx93H 1.22KG |
3 x 7.2Ah SLA Battery is able to do the job of a 45Ah Car battery at smaller cost, space and weight.
SLA 12V12Ah Discharge Time VS Discharge Current
State of Charge on charging
State of Charge on dis-charging
Car Battery
