Noobie needs help on how to construct LED light project
I need help on what and how to achieve the following:
I want to use led's to create an indoor ceiling lamp in the configuration as shown on the attached image. This consists of either self constructed strips (or bought strips //sources in the uk would be appreciated) of Leds, which even with my pitiful knowledge of electronics and components, I know, requires 12 VDC. As it is an indoor light in will run from a uk mains of 230Volts. So how can I safely rig this light, with the voltage difference?
What I need to know is 'What' components I need to set this configuration. I found this web page,
but not being electronics savy, I dont really get the jist, apart from a capacitor and resistor is required. see (http://www.marcspages.co.uk/tech/6103.htm).
I need to know what I need of what, and at what resistances etc? and
'How' to wire it all together, in laymen fashion please!!
Also, I have shown a total of 21 LED's in my image, but this is not set and could very to 4/9 a strip. I just want to cover a distance of 20cm. again sources on pre-built strips/kits would be cool.