yep, i did that and it's working. could the problem be from the attiny chip I bought?
i got the attiny running the blink sketch @ 1MHz using the command -F to bypass the signature and it works. the small issue here is that a delay of 1000 (1 second) corresponds to 0.5ms, 2000 -> 1s. what the hell is going on?
is there any way to get the signature stuff working?
Does it continue blinking if you remove the jumper from pin 9 / XTAL1?
if I give it the clock from pin #9 it blinks faster, if I remove it it blinks for 500ms @ 1MHz but I still cant get the device signature right. I always have to use -F to bypass it
Huh. That's an interesting twist. It runs with no clock on XTAL1. It runs faster with an 8 MHz clock on XTAL1. And you have not been able to read the signature.
Try reading the fuses. I think one -v will do it...
C:\Users\Andre\Desktop\arduino\hardware/tools/avr/bin/avrdude -CC:\Users\Andre\Desktop\arduino\hardware/tools/avr/etc/avrdude.conf -v -pattiny85 -cstk500v1 -P\\.\COM3 -b19200
You may have to add a -F to get it to limp along.
this is was i got reading the fuses using -F
C:\Users\Andre\Desktop\arduino\hardware\tools\avr\bin>avrdude.exe -CC:\Users\Andre\Desktop\arduino\hardware/tools/avr/etc/avrdude.
conf -v -pattiny85 -cstk500v1 -P\\.\COM3 -b19200 -F
avrdude.exe: Version 5.11, compiled on Sep 2 2011 at 19:38:36
Copyright (c) 2000-2005 Brian Dean, http://www.bdmicro.com/
Copyright (c) 2007-2009 Joerg Wunsch
System wide configuration file is "C:\Users\Andre\Desktop\arduino\hardware/tools/avr/etc/avrdude.conf"
Using Port : \\.\COM3
Using Programmer : stk500v1
Overriding Baud Rate : 19200
AVR Part : ATtiny85
Chip Erase delay : 4500 us
PAGEL : P00
BS2 : P00
RESET disposition : possible i/o
RETRY pulse : SCK
serial program mode : yes
parallel program mode : yes
Timeout : 200
StabDelay : 100
CmdexeDelay : 25
SyncLoops : 32
ByteDelay : 0
PollIndex : 3
PollValue : 0x53
Memory Detail :
Block Poll Page Polled
Memory Type Mode Delay Size Indx Paged Size Size #Pages MinW MaxW ReadBack
----------- ---- ----- ----- ---- ------ ------ ---- ------ ----- ----- ---------
eeprom 65 6 4 0 no 512 4 0 4000 4500 0xff 0xff
flash 65 6 32 0 yes 8192 64 128 4500 4500 0xff 0xff
signature 0 0 0 0 no 3 0 0 0 0 0x00 0x00
lock 0 0 0 0 no 1 0 0 9000 9000 0x00 0x00
lfuse 0 0 0 0 no 1 0 0 9000 9000 0x00 0x00
hfuse 0 0 0 0 no 1 0 0 9000 9000 0x00 0x00
efuse 0 0 0 0 no 1 0 0 9000 9000 0x00 0x00
calibration 0 0 0 0 no 2 0 0 0 0 0x00 0x00
Programmer Type : STK500
Description : Atmel STK500 Version 1.x firmware
Hardware Version: 2
Firmware Version: 1.18
Topcard : Unknown
Vtarget : 0.0 V
Varef : 0.0 V
Oscillator : Off
SCK period : 0.1 us
avrdude.exe: please define PAGEL and BS2 signals in the configuration file for part ATtiny85
avrdude.exe: AVR device initialized and ready to accept instructions
Reading | ################################################## | 100% 0.05s
avrdude.exe: Device signature = 0xffffff
avrdude.exe: Yikes! Invalid device signature.
avrdude.exe: Expected signature for ATtiny85 is 1E 93 0B
avrdude.exe: safemode: lfuse reads as 62
avrdude.exe: safemode: hfuse reads as D7
avrdude.exe: safemode: efuse reads as FF
avrdude.exe: safemode: lfuse reads as 62
avrdude.exe: safemode: hfuse reads as D7
avrdude.exe: safemode: efuse reads as FF
avrdude.exe: safemode: Fuses OK
avrdude.exe done. Thank you.
avrdude.exe: safemode: lfuse reads as 62
avrdude.exe: safemode: hfuse reads as D7
avrdude.exe: safemode: efuse reads as FF
...
Int. RC Osc. 8 MHz; Start-up time PWRDWN/RESET: 6 CK/14 CK + 64 ms; [CKSEL=0010 SUT=10]; default value
Divide clock by 8 internally; [CKDIV8=0]
Brown-out detection disabled; [BODLEVEL=111]
Serial program downloading (SPI) enabled; [SPIEN=0]
Preserve EEPROM memory through the Chip Erase cycle; [EESAVE=0]
...common fuse settings for 1 MHz.
Try a different section of you breadboard. Avoid the "power rails".
I ran into the same issues. It turned out to be a connection problem. Use your multimeter to test each pins and wires. It couldn't hurt to get another ATTiny too. They're so cheap, might as well.
already tried another section of the breadboard using no powerails and it's the same, can't get the signature........
i bought 2 attiny85 from ebay, already tried both of them with no success and that's what's weird..
but tomorrow i'll get another one from a local store and try them. it's very weird because the pins are getting powered, there are no connection issues that i can see, but the problem persists
edit: tried another breadboard, changed the resitor and led to a different layout, the capacitor for the reset is also on the breadboard and doesn't work........
Check the connection while it's unpowered. I test the ohms from the pin to the end of the wire. You should get something besides zero.
Push the chip down aggressively.
mistergreen:
Check the connection while it's unpowered. I test the ohms from the pin to the end of the wire. You should get something besides zero.
Push the chip down aggressively.
which wire?
All of them.
If you get a infinity, the connection is broken.
If you get a zero, or close to it (less than 2 ohms) , the connection is good.