[Michael]

Arduino 1.6.x deals with PROGMEM data differently because of changes in GCC. Try the attached sketch. All the bitmaps are included in the .ino file now, so there is only one file in this new version.
Note that this is for the v2 version of the board. If you have a v1 version (e.g. sold by Adafruit) let me know.

[Michael]

Thanks for those links, IChop. Yes with some cleverness and additional components, it could be possible.

[Michael]

That’s great to hear. Embedded programming is much more challenging than writing software on a computer that has enormous resources. Working in a constrained environment is what brings out creativity and cleverness. It will make you a better coder.

[Michael]

Thank you so much! I added them to the gallery. Very nice work!

[Michael]

where would you put 3 more pots? the pins are available.

[Michael]

Fantastic build, Jason! That looks awesome.
Is it ok if we post this picture to the gallery?
https://nootropicdesign.com/defusableclock/gallery.html

[Michael]

Thanks so much for that link. I LOVE it that they are using my product in the commercial! Yipee!

[Michael]

How about some details on the code that won’t compile? I can help if you actually show me the error.

[Michael]

You do not need to connect anything to the NC connection. That pin is unconnected.

[Michael]

Unfortunately, you need a LOT of pins to read a keypad.
http://nootropicdesign.com/projectlab/2010/04/03/keypad-tutorial/

• This reply was modified 8 years, 7 months ago by Michael.
• This reply was modified 8 years, 7 months ago by Michael.

[Michael]

The Defusable clock uses the standard pinout: RTS, RX, TX, 5V, NC, GND
RTS and DTR are compatible. NC means “not connected”. RTS is on side marked “GRN” and ground is on side marked “BLK”. Green and black are the standard colors on FTDI cables.

Some resources:
https://www.sparkfun.com/products/9717
https://learn.adafruit.com/introducing-pro-trinket/using-ftdi

[Michael]

You only need a driver for the FTDI device. Nothing else. Looks like a permissions problem of some kind.

[Michael]

Hmm, that looks like some kind of Windows permissions problem with the serial port. Never heard of that before. Try looking in the arduino.cc forums http://forum.arduino.cc/

• This reply was modified 8 years, 7 months ago by Michael.
• This reply was modified 8 years, 7 months ago by Michael.

[Michael]

Sorry, there’s only one pin left on the microcontroller, so keypad is not possible.

[Michael]

You can’t do it in code. The code has no concept of the analog input threshold. It’s a hardware thing. The potentiometer changes the voltage on a pin of the microcontroller. The only thing I can suggest is to integrate a digital pot or DAC which can output a variable voltage.

[Author]

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