SimpleUI-Logger

* Switch off 10ohm shunt resistor with integrated fast comparator interrupt, when current exceeds 5mA range. Faster response to over-range, avoid significant voltage drop due to 10ohm shunt resistor

* Switch off MOSFET and latched when over-current detected with integrated fast comparator. Threshold defined by a resistor voltage divider. However usable current range reduced to less than 500mA due to relatively high gain 64.9. Will be changed to 59 as with 5mA range to allow current higher than 500mA in next version.

Version 0, revision 1

Parameters to test:

• Linearity of 10V voltage measurement range
• Linearity of 500mA current measurement range
• Linearity of 5mA current measurement range

Features to implement:

• Use built-in low power comparator to switch current range
• Use built-in low power comparator to detect over current
• DC offset storation and calibration

Hardware modification to test for new version:

• Easy selectable boot mode with jumper
• Drive LED directly with GPIO, without transistor