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121  Using Arduino / Installation & Troubleshooting / Re: Sketches Only Upload Once on: April 24, 2011, 12:04:40 am
Hi Lefty,

It works with your trick. smiley I just tried it. I can remember you clearly on the forum because of this!

So, the issues comes down to the waiting stage in bootloader?
122  Using Arduino / Installation & Troubleshooting / Re: Sketches Only Upload Once on: April 23, 2011, 11:59:01 pm
Hi Lefty,

It's an ATMega328 on a small breakout board with the FTDI 6 pin header together with the reset capacitor.
It's weird because it upload once but not the 2nd and so on. smiley-sad
123  Using Arduino / Installation & Troubleshooting / Sketches Only Upload Once on: April 23, 2011, 11:52:38 pm
Hi Everyone,

I burn an Arduino Pro Mini 8 MHz bootloader on a ATmega328 chip using Arduino Uno (as ISP) and also an AVRISP MKII.
Bootloader burning process is ok.
I managed to upload the Blink sketch once and the board works.
But, on 2nd attempt to upload sketch (even the same Blink sketch with different blinking rate), it always fail to upload.
I would get the classic error:
Code:
avrdude: stk500_getsync(): not in sync: resp=0x00
avrdude: stk500_disable(): protocol error, expect=0x14, resp=0x51

I tried burning the bootloader again and even with a second unit, the outcome is the same.  smiley-eek

Do you guys think this has something to do with the waiting time in the bootloading stage?
124  Development / Other Hardware Development / Re: PICOBEE on: April 18, 2011, 07:28:21 am
Usually things go wrong when multiple factors come into the picture. For example, exposure to temperature and heat over long period of time.I would never try to deploy something by over clocking them. If you need something faster, get a bigger processor.
125  Using Arduino / Displays / Re: what is a very high-quality graphic/TFT LCD you'd recommend? on: March 30, 2011, 02:32:04 am
You can take a look at Adafruit's 2.8" TFT. It's USD40 with Arduino library & examples. smiley

126  Community / Products and Services / Re: download arduino books on: March 29, 2011, 07:05:33 am
I guess you should remove the link. It's unethical.  smiley-mad
127  Development / Other Hardware Development / Re: Power Down consumption on custom board on: March 01, 2011, 04:25:34 am
Found it, it is in the wiring file in the core folder. The ADC is enabled by default.
For timers, I think for power down mode, the clock source is not available for it to work.
128  Development / Other Hardware Development / Re: Entry-level Oscilloscope on: March 01, 2011, 04:01:51 am
You guys might want to watch this before buying your first scope:

http://www.eevblog.com/2010/05/11/eevblog-86-buy-a-real-analog-oscilloscope-please/

I often find him entertaining although the voice is annoying. smiley
129  Development / Other Hardware Development / Re: Power Down consumption on custom board on: March 01, 2011, 03:58:05 am
Quote
From the datasheet...

9.11.3 PRR – Power Reduction Register

Bit 0 – PRADC: Power Reduction ADC
Writing a logic one to this bit shuts down the ADC. The ADC must be disabled before shut down.
The analog comparator cannot use the ADC input MUX when the ADC is shut down.

But, if we don't enable the ADC at the 1st place, we don't have to do the above setting right?
Look at 9.10.1 of the datasheet.
130  Development / Other Hardware Development / Re: Power Down consumption on custom board on: February 28, 2011, 07:57:44 am
Hi,

Is there any 3.3 V regulator?
131  Using Arduino / Microcontrollers / Re: Trouble burning bootloader with avrisp mkII on: February 28, 2011, 03:39:56 am
I got the same error too when using the IDE. So, I try using AVR Studio (different drivers) to double check. It seems that the ISP clock speed was too low as I was playing with it earlier (but in AVR Studio it will still be able to read the chip although it's slow). Then, after adjusting the ISP back to default speed, it works on the Arduino IDE as expected. It might be different cause for your case but it's worth looking at. smiley
132  Development / Other Hardware Development / Re: mini Arduino idea on: February 27, 2011, 01:39:18 am
If you are looking for making prototype PCB, you can consider Laen's service:
http://dorkbotpdx.org/wiki/pcb_order

The service has weekly panel already as the response is pretty good. Board is made in US and USD5 per square inch and you'll get 3 copies of the design. Shipment is already included for US!
133  Development / Other Hardware Development / Re: PIC24 on: February 24, 2011, 05:44:35 am
Quote
Among the drawbacks are numbered...crazy banked RAM.
Oops, I forgot that. And also some software based stack on some of the microcontroller.
134  Development / Other Hardware Development / Re: PIC24 on: February 23, 2011, 10:21:43 pm
I was a PIC guy back then. The only drawback they have is lack of GCC support (yeah I know their commercial C compiler is based on GCC). They have so many microcontroller to chose from!
135  Development / Other Hardware Development / Re: Entry-level Oscilloscope on: February 23, 2011, 10:05:48 am
At USD349, the Rigol 50 MHz DS1052E is awesome!
And hackable. smiley http://www.instructables.com/id/Hacking-the-Rigol-DS1052E-Oscilloscope-with-Linux/

Regarding the mention of the DSO Nano v2, I own one of those. With the latest "BenF" firmware, it's a pretty awesome little device for what it is (and what it cost), especially for those of us with very little bench space to spare; but, recognize the limitations (which it sounds like you have: 1MHz, single input, etc). If you're at even remotely considering it, you might want to save a your pennies and hold out for the DSO Quad to become a little more "production-ready"; it looks to be a significant improvement over the original two Nano designs.

Do check David's full review on DS1052E!
http://www.eevblog.com/2009/04/05/full-review-of-the-rigol-ds1052e/
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