Archive for the ‘I2C’ Category.

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LED shades

Light Emitting Dance shades – general purpose party accessory.

LED Shades v0.3

LED Shades v0.3

About this project

I believe¬†many young adults like to party and with the rapidly growing EDM community a lot of people attend parties with electronic music. I am one of them and you can probably tell where I got the idea to make the LED shades.¬†Projects like this one don’t just keep me occupied in my free time but are also designed to broaden my knowledge in electronics and programming. Continue reading ‘LED shades’ »

Ultra low cost I2C level shifter

I have some I2C sensors which are capable of running from low supply voltages. Host microcontroller has 3,3 or 5V supply, which is usually out of absolute maximum range, when I2C device is supplied with e.g. 1,8V. The sensor is usually very low power, which means simple emitter follower could do the low voltage supply.

The circuit schematic is shown in following drawing (click to enlarge):

sch

Continue reading ‘Ultra low cost I2C level shifter’ »