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Topics - ndelson

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New Product Ideas / Double Sided Connector for TinyShield Proto Board
« on: August 30, 2013, 10:15:39 AM »
Could you make a Proto Board with a double sided connector?

I have already done 2 projects where I would have liked a double sided connector on a Proto Board specifically so I can attach and LED Shield as the top shield. the LED Shields are so neat, but once you connect a Proto Board you have to hide your LEDs inside the pack where they are much less visible.



TinyDuino Processors & TinyShields / Reset Switch
« on: August 30, 2013, 10:10:29 AM »
How do you use the reset switch on the TinyDuino?

Do you just put 2 wires into the plug and connect them together? If yes, can you tell me the gauge of wire that will fit in (I assume it has to be solid core).



TinyDuino Processors & TinyShields / TinyShield Motor Driver
« on: July 22, 2013, 12:52:39 PM »
I am having difficulty getting my Tiny Shield Motor driver to work. I suspect that it has to do with the ground connections.

I know that my code is running since I added an LED Shield and it is blinking as programmed. I am using 2 AA batteries and measure 3VDC going into the Motor Driver, but the motor is not turning (it works on 3VDC).

I followed the wiring instructions on the Tiny-Circuits site, copied below:

◦   "Step 3: Add a wire between the GND pin on the Motor x4 TinyShield and the negative terminal on the battery holder."
My Tiny Duino has a coin battery holder, but I am using an external battery. The negative terminal was “hidden” under the battery holder clip, so I used a cardboard piece to press a black ground wire into the coin space. I checked that there was indeed a 3VDC difference between the ground wire and positive terminal.
◦   "Step 4: Add a wire between the VM pin on the Motor x4 TinyShield and the positive terminal on the battery holder."

I soldered a red wire to the spot where the coin holder is attached to the Tiny Duino.

◦   "Step 5: Add a wire between the positive connection on the battery holder and the ‘+’ hole on the TinyDuino processor Board. This will connect the VM and VCC power supplies together."

I soldered a red wire to the ‘+’ on the Tiny Duino board.

I then tied the black wire to the AA batteries ground and into the Motor Driver GND. I tied all red wires together and the AA battery positive, and tied it to the Motor Driver VM input.

Nothing was working so I tried connecting the ‘-‘ on the Tiny Duino to the rest of the grounds but that did not help either.

I have used H-bridges and motor drivers before, but have spent 2 days on this and am stuck. I already tried a second motor driver shield. Any advice would be much appreciated.



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