Elemental Stone Replicas

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Part 2a – Prototyping the Electronic Internals

After the stone bodies were prepped, I spent a couple of days tinkering and prototyping the internal electronics. I decided that each stone would have a main power switch, three multi-colored LEDs, and an internal ball tilt switch to change the LED mode. The LEDs have an element mode, a rainbow mode, a disco mode, and high/med/low lamp mode.


I don’t own an actual AVR programmer so throughout this project I was using one of my many Arduino Nano boards as an ISP programmer to get my code onto the ATTiny85 chips. You can see the programming headers I added to the water stones main board. I didn’t like this arrangement and that is why I chose to make the microprocessor removable in the other three stones. Overall I was very please with how well the Arduino Nano worked as a programmer. I’ll probably continue ising this setup for future projects.

Arduino ISP Header Pinout
Arduino ISP Header Pinout
Arduino ISP Header Pinout
Arduino ISP Header Pinout
AVR ISP using Arduino Nano with Cable
AVR ISP using Arduino Nano with Cable
AVR ISP using Arduino Nano with Cable
AVR ISP using Arduino Nano with Cable
AVR ISP using Arduino Nano (Top)
AVR ISP using Arduino Nano (Top)
Arduino Nano as AVR In System Programming (ISP)
Arduino Nano as AVR In System Programming (ISP)
Custom AVR ISP Cable
Custom AVR ISP Cable
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