|
Title: Smart (schematic) snippets ideas for design solution Post by: blauwhaar on March 30, 2015, 02:26:49 14:26 I know there is Google, but why not one place to get everything you need ;)
Sometimes you need a solution for a headache question: For example: keyboard decoder with ADC: ===================== keyboard created with resister divider connection to one ADC converter, VCC-Rf-Re-Rd-Rc-Rb-Ra-ADC-Rs-GND, buttons on Ra..f to GND. It is possible for example 10 buttons on one microcontroller pin, otherwise you should use a matrix which use more mcu pins. i2c optical isolation ============== Think, realise and see the troubles. solution: http://www.embedded.com/design/prototyping-and-development/4025023/Opto-electrical-isolation-of-the-I2C-Bus i2c slave addon for debugging: ======================= i2c slave device board connected to application to sent debug messages, often there is no serial port available in small microcontrollers but an i2c port exists. I use this trick for debugging small cypress usb controllers. In future these examples must be separated, and if possible: Smart schematic snippets --\ ADC --- n keys on one ADC microcontroller pin --\ I2C --- I2C optical isolation solutions --- debugging with I2C I think it is very usable for developers/designers. |