Turbo boards finally arrived, but the manufacturer used a thin see through yellow silkcreen instead of the white silkscreen that I had requested. On Black Soldermask (color of PCB) you can barely see the text etc.
I threw a sh*tfit with them. I received notice that a replacement set of boards shipped today.
It'll be a week or so until delivery. I hope to have the new online store up and running by then.
Interlocking doesn't increase the cost. It's a software mod. However, I need to create a new line item on the store to do that. Stay tuned!
Switches - you only need a spst switch, I have another thread with those details I posted very recently. In essence, your pulling a pin on the microcontroller to ground. If nothing is connected to the pin, it pulls high.
LEDs are driven through the outputs of the board. You can drive upto 20mA on each gpio.
I'm available for live chat through the website from time to time, so if I do pop up in a chat window on the site, don't be a stranger!