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Solar Pendulum

Solar powered pendulum as below was can be easily made without circuit board.

Parts list:

Solar panel > 2 V output

Capacitors :  3300 uF x 1, 1000uFx1

NPN Transistor: 2N3904 x 1

PNP Transistor: 2N3906 x1

Resisitor: 100kOhm x 2

Diode : IN4001 x 1

LED: Any colour x 1

Coil: 10mm dia. x 30 rounds

Magnet : 10mm dia. round x 1

Swinging device: Free to sing



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English Manual of AnyCubic I3 Mega


During the operation of 3d printer, it is required to print the first layer of your model onto the printer heat bed.Therefore, it is first objective to adjust the nozzle head within the clearance distance between 0.1 to 0.2 mm (i.e. thickness of a sheet of paper). The procedures for the adjustment are shown as in above video.


Anycubic Manual – version 2

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Internet of Things 物联网

Things which can be reached by some devices via the internet connections.

Things are defined as in above figure that it can be devices or services. It can be an online/offline internet connection with continued monitoring of programmable software or AI via hardware. Sensors are hardware which may be embedded in phone, cooker, car, plane, clock, iron, machine, plant, router, bin, light bulk, fan, bicycle, door lock, boiler, oven, freezer, robot, timer and etc.  Concurrent parameters such as temperature, location, speed, weight, humidity, acidic, pressure, qualities and etc. were reported or extracted via internet for analysis for response via devices.  By the mean time, the internet location (IPv4 or IPv6) was adopted as a basic unit of device.

Common hardware:

Personal Computer (single CPU computer unit)

Cloud computing (virtual computing system via simulation of high performance computer)

System on chip, SOC (Single chip computer system with integrated I/O power)

Cluster computing (super computer system with nodes)

Common software:

Big data analysis

Artificial intelligence