This project almost seems like a distraction as the other ones I have going are for work and are needed soon. However it has been very important as it is much less complex and it is teaching me a lot of different skills. Skills like:
- learning to re-check the orientation of your IC and triple checking that the IC pin, the logic pin and the physical location on the board all jive.
- learning that the moment I change the circuit I will forget how it was.
- that when switching projects it is important to write everyting down (see above).
More Intentional Skills:
- Using Arduino as ISP
- Using protoboard
- Using Eagle CAD
- Creating a voltage regulator circuit for myself
- Reading datasheets
- Googling to find what others have done!
I know have the circuit running on a breadboard and was laying it out in Eagle. I do think I want to add one more element which is a pot to set the threshold as I think I was just being lazy by picking an arbitrary value and I am sure that will bite me once it is all soldered up.
Here are the components:
- AtTiny85
- 3.3V regulator
- 9V battery and case
- 1k ohm resistor
- 330k ohm resistor
- LED
- 100nf capacitor
- 10uf capacitor
- Button for reset
- pot (need to add) with another resistor
The next steps are to finish the EagleCAD schematic, add the pot circuit in the sketch and test it all out again on the breadboard. Then I can start soldering!