Show Posts
Pages: [1] 2
1  Using Arduino / Project Guidance / Re: Is this printed electronics project feasible? on: August 14, 2013, 08:02:10 am
Grumpy_Mike:

Are you referring to pin 7? 

I am very new to this.  Do you mind explaining how you would attach it?  For example, would this capacitor be in series or in parallel with the capacitor between pins 7 and 8?  What size capacitor would you use?

2  Using Arduino / Project Guidance / Re: Is this printed electronics project feasible? on: August 13, 2013, 09:46:08 pm
Here is a JPG of the circuit diagram
3  Using Arduino / Project Guidance / Re: Is this printed electronics project feasible? on: August 13, 2013, 09:42:28 pm
Unfortunately the goal of the project is to show off the paper PCB
4  Using Arduino / Project Guidance / Is this printed electronics project feasible? on: August 13, 2013, 09:21:11 pm
I am trying to mount the circuit in the image to a PCB made from printed silver on paper.  The only problem is that the silver wires are slightly resistive.  Right now a 25 cm X 120 micron wire is 4 ohms.  With that in mind will this circuit still work?
5  Using Arduino / Installation & Troubleshooting / Re: Cant get the FTDI Basic Breakout to reset my home made Arduino on: June 09, 2013, 06:03:11 pm
I added a connection between Pin 1 and +5V with a 10kohm resister and now the reset works.  Thanks!!!
6  Using Arduino / Installation & Troubleshooting / Cant get the FTDI Basic Breakout to reset my home made Arduino on: June 09, 2013, 11:05:34 am
I cant get the DTR pin on my FTDI Basic Breakout to reset my home made Arduino Uno.

When I try to load a program the second time to my Uno after manually resetting the board I get the following error message:
"avrdude: stk500_getsync(): not in sync: resp=0x00"


I am using an ATmega328 with Arduino Optiboot (Uno) => Part# DEV-10524
https://www.sparkfun.com/products/10524

I have "Arduino Uno" selected as my "Board" and below are a list of my pin connections

FTDI Basic Breakout Pin Connections:
DTR => ATmega Pin 1 via a 100nF capacitor (Do I need this capacitor?)
RX1 => ATmega Pin 3
TX0 => ATmega Pin 2
3V3 => Not in use
CTS => Not in use
GND => Ground

ATmega328 Pin Connections:
Pin 1 (Reset) => DTR pin of the FTDI Basic Breakout via a 100nF capacitor
Pin 2 (RX) => TX0 pin of the FTDI
Pin 3 (TX) => RX1 of the FTDI
Pins 4-6 => Not in use
Pin 7 (VCC) => +5V and Pin 8 via a 100nF capacitor
Pin 8 (GND) => Ground and Pin 7 via a 100nF capacitor
Pin 9 (XTAL1) => Right hand pin of a 16 MHz ceramic resonator (https://www.sparkfun.com/products/9420)
Pin 10 (XTAL2) => Left hand pin of a 16 MHz ceramic resonator
Note: The center pin of the ceramic resonator is connected to ground (What do the different pins on the resonator do?)
Pins 11-14 => Not in use
Pin 15 (PWM) => Connected to an LED which goes to an 330 Ohm resistor which is then connected to ground.
Pin 16-18 => Not in use
Pin 19 (AVCC) => +5V (What does this pin do?)
Pin 20 => Not in use
Pin 21 (AREF) => +5V (What does this pin do?)
Pin 22 (GND) => Ground
Pins 23-28 => Not in use


Thank you for giving me a hand!!!
7  Using Arduino / Motors, Mechanics, and Power / Re: I need to run a motor. on: September 24, 2012, 05:37:56 pm
Maybe I can ditch the whole rig and replace the motor with a parallax servo.  Now the big thing is getting it to count to 6000
8  Using Arduino / Motors, Mechanics, and Power / Re: I need to run a motor. on: September 24, 2012, 05:35:50 pm
I see the switches now and yes they do get tripped when the motor runs.
9  Using Arduino / Motors, Mechanics, and Power / Re: I need to run a motor. on: September 24, 2012, 04:28:10 pm
The motor is enclosed so if there is a switch being tripped I can not see it.  I was hoping to do away with the boards (MD3110 and A29L040L) and replace them with the Arduino to run the motor.  Does that seem possible?  I don't think the motor draws many amp's.
10  Using Arduino / Motors, Mechanics, and Power / Re: I need to run a motor. on: September 24, 2012, 03:52:32 pm
This is an image of the oscilloscope when it is connected to the two oscillating +3.3V lines (1a and 1c) and the two oscillating +5V lines (2a and 2b)
11  Using Arduino / Motors, Mechanics, and Power / Re: I need to run a motor. on: September 24, 2012, 03:50:11 pm
This is an image of the oscilloscope when it is connected to the two oscillating +3.3V lines, 1a and 1c.
12  Using Arduino / Motors, Mechanics, and Power / Re: I need to run a motor. on: September 24, 2012, 03:36:09 pm
This is an image of the oscilloscope when it is connected to the two +5V lines, 2a and 2b.  (Note that the oscilloscope's voltage scaling is off by an order of magnitude).
13  Using Arduino / Motors, Mechanics, and Power / Re: I need to run a motor. on: September 24, 2012, 03:00:25 pm
In the foreground to the left are the +5V and ground connections for powering the rig.

In the foreground to the right is a board labeled "Koltech MD3110 module board V1.0a."  Coming out of this board are the two +5V lines to the motor.

In the middle is another board with a chip labeled  "AMIC      A29L040L-701     1053011     AML0099"

In the background is a white motor with four cables coming in from the top and two from the side.
14  Using Arduino / Motors, Mechanics, and Power / Re: I need to run a motor. on: September 24, 2012, 02:38:02 pm
Here is a pic of the setup
15  Using Arduino / Motors, Mechanics, and Power / I need to run a motor. on: September 24, 2012, 09:49:01 am
I have a motor that is currently being run as a stand alone device that I need to control through my computer so that it only performs 6000 revolutions and then stops.  The motor takes in two sets of wires with the following properties.

Set 1:
1a) 3.3V square wave pulse with a pulse width of 200 ms and a frequency of 385 mHz
1b) Constant 3.3V bias voltage
1c) 3.3V square wave pulse with a pulse width of 200 ms and a frequency of 385 mHz
1d) Constant 3.3V bias voltage

Note: that 1a and 1c are 180 degrees out of phase

Set 2:
2a) 5V square wave pulse with a pulse width of 1.3 sec and a frequency of 385 mHz
2b) 5V square wave pulse with a pulse width of 1.3 sec and a frequency of 385 mHz

Note: 2a and 2b are 180 degrees out of phase


How do I program the arduino to emit this pulse sequence?  Do I need to use the analog or the digital outputs?  Is there a DIY project online that is similar to this problem so that I can copy them?
Pages: [1] 2