Junebug "VDD Level Error" - Electronic Circuits Projects Diagrams Free

Gayan Soyza · 13th January 2009, 06:15 AM

My Junebug is not working with my personal home computer.It says "VDD level error check target & retry operation"

The thing is my junebug is working in my friends computer.

I measured some voltages in junebug.

U5V = 4.4V

VPP = 10.69V

I'm going to check my PC's power unit whether I can do something .......

Any ideas?

Pommie · 13th January 2009, 06:57 AM

Can you try running it via a powered hub?

Mike.

Gayan Soyza · 13th January 2009, 06:59 AM

Sorry no any powered hubs

AtomSoft · 13th January 2009, 11:32 AM

Quote:

Originally Posted by Gayan Soyza

My Junebug is not working with my personal home computer.It says "VDD level error check target & retry operation"

The thing is my junebug is working in my friends computer.

I measured some voltages in junebug.

U5V = 4.4V

VPP = 10.69V

I'm going to check my PC's power unit whether I can do something .......

Any ideas?

Simple question.. are you testing it on the exact same target board? If so try powering the board from a external supply. (your pc may not be sending enough power) are you using many USB ports? (with higher power devices on it)

If you are doing that already... remove the external power and any parts such as regulators from the target. It may be faulting and causing a power issue.

blueroomelectronics · 13th January 2009, 01:46 PM

Try jumpering on the 16 pin breakout connector pins U5V & +5V
Also make sure you used a 1N581x diode not a 1N400x

Gayan Soyza · 15th January 2009, 03:25 AM

Hi thanks for the replies.

Yes when powering external 5V its working nicely.But I need to make my junebug to work like self powering programmer

I need to check the power unit in my computer.

When that error occurs I firstly did bypass both 2N7000 & BS250 mosfets.Its working but cannot program PICs with INTOSC & MCLR OFF

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13th January 2009, 06:15 AM	#1
Gayan Soyza	Junebug "VDD Level Error" My Junebug is not working with my personal home computer.It says "VDD level error check target & retry operation" The thing is my junebug is working in my friends computer. I measured some voltages in junebug. U5V = 4.4V VPP = 10.69V I'm going to check my PC's power unit whether I can do something ....... Any ideas? __________________ Gayan My Website http://gsmicro.blogspot.com/ Last edited by Gayan Soyza; 13th January 2009 at 06:16 AM.

13th January 2009, 06:57 AM	#2
Pommie	Can you try running it via a powered hub? Mike.

13th January 2009, 06:59 AM	#3
Gayan Soyza	Sorry no any powered hubs __________________ Gayan My Website http://gsmicro.blogspot.com/

13th January 2009, 01:46 PM	#5
blueroomelectronics	Try jumpering on the 16 pin breakout connector pins U5V & +5V Also make sure you used a 1N581x diode not a 1N400x __________________ Bill Smart Kits build Smart People http://www.blueroomelectronics.com/

15th January 2009, 03:25 AM	#6
Gayan Soyza	Hi thanks for the replies. Yes when powering external 5V its working nicely.But I need to make my junebug to work like self powering programmer I need to check the power unit in my computer. When that error occurs I firstly did bypass both 2N7000 & BS250 mosfets.Its working but cannot program PICs with INTOSC & MCLR OFF __________________ Gayan My Website http://gsmicro.blogspot.com/