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1006  Community / Products and Services / Re: Arduino as ISP Mini-Shield on: March 13, 2012, 08:07:57 pm
Here is the schematic : (See attached)

A fly lead runs from pin 5 (Shield) to arduino pin 10.

Tested & Working.
1007  Using Arduino / Microcontrollers / Re: Erase Bootloader? on: March 13, 2012, 10:23:23 am
Yes it will - The benefits are 1. more space for your program, as you say, and 2. The sketch starts straight away, without the 1 Sec. delay.

But its easy to reflash the bootloader if you need it with the USBtiny.
1008  Community / Products and Services / Arduino as ISP Mini-Shield on: March 13, 2012, 10:13:41 am
Hi all,
        I've made a shield for using the Arduino as an ISP Programmer, it sits on the ISCP header, has a 28 Pin socket (for 8/168/328 etc.) & a 8 Pin socket for the Tiny series of chips - Primarily designed for my students, to create standalone systems, I have a few boards left over - I'm selling these on eBay - and also through this site.

All you need to do is disable the reset on your Arduino (Covered many times in the forums)

If you want one, PM or Email me, they are £3 + P&P  for the board only or £4.50 + P&P populated ,assembled & Tested.
Postage is at your discretion - 1st Class / 2nd Class or pickup etc.

Some Pictures :
1009  Using Arduino / LEDs and Multiplexing / Re: Are Four 74HC595 Sift-registers in a row too many? on: March 13, 2012, 04:27:55 am
Hi - I have a shield I designed and had made, its the ShiftShield32 , it uses 4 x 74hc595's chained together, and I use this library by Paulo Ricca(See Attached File).
1010  Using Arduino / Project Guidance / Re: Power Arduino from ATX power supply on: March 08, 2012, 04:20:00 pm
If your using a PC ATX power supply, why not just use the +5v?
1011  Using Arduino / Project Guidance / Re: Help with password library on: March 08, 2012, 04:18:55 pm
Add a file to C:\{path to arduino}\arduino-1.0\hardware\arduino\cores\arduino called WProgram.h - edit it and add the line : #include <Arduino.h>

That should clear that up for you.
1012  Using Arduino / Installation & Troubleshooting / Re: Board Not Working on: March 08, 2012, 04:13:24 pm
can you post a close up, in focus image of the top & bottom of your board so we can take a guess.
1013  Using Arduino / Microcontrollers / Re: Standalone - with USB (Cheap & Easy) on: March 08, 2012, 07:31:07 am
Here are some Pics of the board in progress.

The Adapter I bought, then pop off the case (Very weak Glue), and desolder the 9 Pin 'D' Connector. Finally, Solder the wires to Ground, Tx and Rx.

Not shown the USB 'B' connector replacing the 'A' Style, just desolder it, and use ribbon cable etc to connect it up.
1014  Using Arduino / Microcontrollers / Re: Standalone - with USB (Cheap & Easy) on: March 05, 2012, 12:07:38 pm
    PL2303HX                                   ATMEGA                                    Arduino Pin
       CHIP                                          CHIP                                            Board

      PIN 1                                           PIN 2                                             Rx - 0
      PIN 5                                           PIN 3                                             Tx - 1

Connect a common ground between them (I use the USB Shielding solder point)

These are on the chip itself, not the 9 pin connector - small pitch, but a steady hand, Kynar Wire (Very fine) pre-tinned
and a magnifier do wonders.

Hope that helps

1015  Using Arduino / Microcontrollers / Re: Standalone - with USB (Cheap & Easy) on: March 05, 2012, 08:12:39 am
OK - Not at home just now - I'll upload Pictures later today.
1016  Using Arduino / Microcontrollers / Standalone - with USB (Cheap & Easy) on: March 04, 2012, 08:24:20 am
Hi all, I've been asked a few times how I add USB connectivity to projects for serial coms with PC (or re-programming), and I thought I would share what I use here.

I buy these : (unsolder the USB A and connect a USB B female with 'fly' wires to make a standard interface).


If I can get them cheap enough I buy the USB to RS232 converters (Dongle type) - 95% of them I have seen have USB - TTL bridge chips, with a inverter/converter chip, Just a case of getting the Product Data Sheet, and working out where to hook up Rx/Tx and Dtr (Via a cap) if you want/need auto reset(not forgetting to hook up a GND as well), I normally don't use auto reset, as it makes it easier for someone to hook up a PC to download DATA without the chip resetting. If I want to update the firmware on a project, I use a jumper to short the reset to ground, and remove it when the sketch size shows on the IDE to upload.

If you can't spare the space (Never been an issue for me yet) you can integrate a USB/SERIAL bridge chip (With support components) on your board, I have never found this to be cost effective anyway, but I find 'fly' leads and hot glue work wonders, and an integrated design tends to take up the same sort of space anyway.

My latest 'set' of 8 dongles have the prolific pl-2303hx Chip, with a maxim max211 Logic/Level converter - I hooked up Tx - pin1, Rx - pin 5, and Ground to the USB Ground, removed the max211, Unsoldered the 9 Pin header (left on the USB A connector, until I need to use them), at a cost of £1.15 each.
1017  Using Arduino / Installation & Troubleshooting / Re: New Arduino and heaps of problems installing on: March 03, 2012, 07:07:55 am
Hi Mal, try here :

Hope that helps  smiley

1018  Using Arduino / General Electronics / Re: 12 volt input? on: March 02, 2012, 03:13:43 am
@bibre - You got it, the higher the resistance the lower the current load, but 3.5K and 2.5K would work fine.
1019  Using Arduino / Project Guidance / Re: How many stepper motors can the Arduino Nano control? on: March 01, 2012, 05:13:07 pm
Yes - each stepper takes 1 pwm output.
1020  Using Arduino / Installation & Troubleshooting / Re: Error Pop-Up When Arduino Icon Clicked on: March 01, 2012, 04:00:00 pm
Have you deleted the entire arduino folder - re-download & reinstalled.
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