Re: [avr-chat] usbasp

[Simon Lundell]

Hi,

does anybody know if it is possible to prototype it on a breadboard, or 
is the routing critical?

Is it critical to use an ATmega8? I have tried an ATmega48, without 
success. I only had to change a single row in timer.h to make it compile.

The thing is that i get this message:

hub 1-0:1.0: connect-debounce failed, port 3 disabled

upon connect. Any suggestions are very welcomed.

//S

Hanns-Konrad Unger wrote:

> > On Wed, 08 Mar 2006 09:07:45 +0530, <address@hidden> wrote:
> >    
> >
> > > What about
> > > www.fischl.de/usbasp
> > >
> > > I did it myself. It works on my laptop without any problem.
> > > Javier
> > >      
> > This looks nice & simple. When I build it, I'll get back to you with my 
> > feedback.
> > Thanks !!
> >
> > --Royce.
> >
> >    
> >
> > > "Royce Pereira" <address@hidden>@nongnu.org con fecha 07/03/2006
> > > 04:29:18 a.m.
> > >
> > >
> > > Hi,
> > > Can any one recommend a AVR programmer using the USB port? I need something
> > > I can build myself, not buy commercially.
> > >      
>
>
> I built one and it seems to work out of the box. My system is linux 2.6.14.
> Because I could not read the layout on Thomas Fischls homepage I built my
> own postscript based pcb. Here is the source:
>
> =============================== SOF usbasp.pcb ================================
> #
> # Name:     usbasp.pcb
> # Function: ISP for AVR with USB-interface (www.fishl.de/usbasp)
> # Usage:    pcb.layout usbasp.pcb >usbasp.ps (www.hanns-konrad.de)
> # History:  2006Mar21   Hanns-Konrad Unger   layout
> #
>
> (p27)board(n14)(n15)wire(h5)(h2)wire (h2)(m2)wire (m2)(m4)wire (m4)(k6)wire 
> (k6)(k8)wire(k9)(k11)wire (k11)(j11)wire(k8)(o8)wire (o8)(o14)wire 
> (o14)(i14)wire(h15)(f15)wire (f15)(e14)wire (e14)(d14)wire (d14)(d24)wire 
> (d24)(h24)wire(l6)(n6)wire (n6)(n1)wire (n1)(d1)wire (d1)(d11)wire 
> (d13)(e13)wire(e13)(f14)wire(f14)(h14)wire (h14)(i15)wire (i15)(j15)wire 
> (j15)(j16)wire(j16)(n16)wire (n16)(n21)wire (n24)(k24)wire(a4)(d4)wire 
> (g1)(g6)wire (g6)(h6)wire(g16)(e16)wire (e15)(e17)wire(g17)(f17)wire 
> (f17)(f19)wire (f19)(e19)wire (e19)(e21)wire(j12)(l12)wire 
> (l11)(l10)wire(j13)(n13)wire (n13)(n12)wire (n11)(n10)wire(h8)(f8)wire 
> (b8)(d8)wire(e4)(e7)wire (e7)(h7)wire (h7)(i6)wire(a6)(a22)wire (e22)(f22)wire 
> (f22)(g21)wire(i5)(k5)wire (k5)(l4)wire(p4)(p22)wire (p22)(m22)wire 
> (m22)(m21)wire (m21)(j21)wire(g11)(i11)wire (i11)(i7)wire (i7)(j7)wire 
> (l7)(p7)wire(i24)(i25)wire (i25)(c25)wire (c25)(c12)wire 
> (c12)(e12)wire(e12)(e9)wire (e9)(g9)wire(g10)(f10)wire (b10)(b26)wire 
> (b26)(j26)wire (j26)(j24)wire(j19)(k19)wi
> re (k22)(k23)wire(j17)(h19)wire (h22)(h23)wire(j18)(h20)wire (h20)(h21)wire 
> (h21)(g22)wire (g22)(g23)wire(j20)(i21)wire (i21)(i23)wire                 
> :1:PCB:board 43mm x 71mm   :BEL 160x100-1  :saw
> (h15)pad (i14)pad:6:B1 :bridge              :               :solder
> (a22)pad (e22)pad:0:B2 :bridge              :               :solder
> (d13)pad (d11)pad:0:B3 :bridge              :               :solder
> (k19)pad (k22)pad:0:B4 :bridge              :               :solder
> (h19)pad (h22)pad:0:B5 :bridge              :               :solder
> (j7) pad (l7) pad:0:B6 :bridge              :               :solder
> (h8) smd (i21)smd:1:B7 :isolated bridge     :               :solder if needed
> (b8)pad (f8)pad  :1:R1 :10k resistor        :1/4W 10k       :solder
> (a6)pad (e6)pad  :1:R2 :1k5 resistor        :1/4W 1k5       :solder
> (b10)pad (f10)pad:1:R3 :270 resistor        :1/4W 270       :solder
> (l6)pad (l10)pad :2:R4 :2k2 resistor        :1/4W 2k2       :solder
> (n6)pad (n10)pad :0:R5 :2k2 resistor        :               :solder
> (a4)pad (e4)pad  :2:R6 : 68 resistor        :1/4W  68       :solder
> (l4)pad (p4)pad  :0:R7 : 68 resistor        :               :solder
> (d15)pad (e15)pad:2:C1 : 22pF capacitor     :Kerko 22p      :solder
> (d21)pad (e21)pad:0:C2 : 22pF capacitor     :               :solder
> (f14)pad (f15)pad:1:C3 :100nF capacitor     :Z5U-2,5 100n   :solder
> (n14)pad (n20)pad:1:C4 : 10uF capacitor     :AX 10/35       :solder + in (n20)
> (n15)pad (n16)pad:1:C4a: 10uF capacitor     :RAD 10/35      :alternatively
> (e17)pad (e19)pad:1:Q1 :12Mhz quartz        :12-HC49U-S     :solder
> (l11)pad (l12)pad:1:D1 : red  led 2mA       :LED 3mm 2MA rt :solder anode in 
> (l11)
> (n11)pad (n12)pad:1:D2 :green led 2mA       :LED 3mm 2MA gr :solder anode in 
> (n11)
> (n21)pad (n24)pad:1:D3 :BAT43 schottky diode:BAT 43         :solder anode in 
> (n21)
> (g8) 14 ypad (j8) 14 ypad                 :1:IC1:ATmega8-16PI        
> :ATMEGA8-16 PDIP:solder Pin 1 in (g8)
> (k8)pad (k9)pad  :1:J3 :jumper SCK          :LU 2,5 MS2     :solder
> (g23) 5 xpad (g24) 5 xpad                 :1:K1 :plug                :WSL 10W   
>      :solder
> (f3)(f4)wire2 (k3)(k4)wire2(h5)pad (i5)pad (h6)pad (i6)pad (f4)pad (k4)pad      
>            :1:K4 :USB-B-plug          :USB BW         :solder
> =============================== EOF usbasp.pcb ================================
>
> You can find a debian archiv for pcb on my homepage www.hanns-konrad.de.
> pcb is a shellscript converting *.pcb into postscript.
> It also prints heathkit-like instructions.
>
> Hanns-Konrad
>
>
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