Autor: gordo
Whoops, I read the date wrong I guess you probably figured it out by now :)
View ArticleAutor: gordo
Fantasy, Did you set the jumper so it can Write?. Flashing green usually means signature ok, fusebits are wrong. Lockbits enabled, chip erase permission required. There is a guide up at top part of...
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Autor: ilker
Thank you for your wonderful project!!! i builded the circuit on breadboard and i rescued one atmega8A and one atmega328P (both dip socket). its working good. Then i used to try on TQFP ic’s and no...
View ArticleAutor: Sh2cer
Did not understand how to connect atmega2560 if you can tell me . thank you
View ArticleAutor: jens
the socket oft the Mega16/32 is very near to the Tiny2313. So I can’t use it with Textool-sokets. Now I have made a external socket for the Mega16/32, and do not placed it on the main board. Maybe it...
View ArticleAutor: FlorinB
I am trying to revive an ATMEGA328p. I assambled everything on a breadboard (for IC1 I am using Atmega8 and my bricked Atmega328p is connected as IC4), I haven’t powered yet because I don’t understand...
View ArticleAutor: FlorinB
OK, my bad, after pushing so many Dupont wires in the breadboard I missed the right notation… pin 9 on IC2 is DATA6 as a matter of fact.
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Autor: FlorinB
Hoooray, it worked! My 328p is alive again. This little great device worked at the first try even my build was an sophisticated „octopus” breadboard :))
View ArticleAutor: admin
Hi, sorry for delay in answer, but i see you solved it out. It looks messy, no surprise you had problems with it :) This circuit is a bit tricky and should be made on a pcb, well you can make yourself...
View ArticleAutor: admin
Another successful breadboard built :) If you just swap DIP and TQFP chip there and it works only with DIP, maybe your TQFP chip is dead? I mean fried dead.
View ArticleAutor: Олег
Добрый день! Транзисторы bc557 обязательно должны быть установлены в инверсном режиме? На печатной плате перепутаны вход +12 В и выход относительно принципиальной схемы – это имеет значение? Спасибо.
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Autor: FlorinB
@Admin Hello again, I built this great device on a dedicated PCB (you are so right, never know when it is needed) after I successfully previously tested on a breadboard. Even you shared the entire...
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Autor: FlorinB
I could not attached more pictures in the previous post so here’s my home-brew PCB :)…
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Autor: FlorinB
… and this is my assembled board. I have one more question: I used a TO92 package for the 7805 IC (this is rated about 100mA), could this be a problem (besides the dissipated heat)? As I said, I tried...
View ArticleAutor: FlorinB
Once again I’ve solved myself the problem: eventually I noticed that on SV2 pin row I had to connect pins 6 and 8 (OE and XTAL1). The the Doctor works with ATTINY13 too.
View ArticleAutor: admin
Hi. I see you figured it out. Yes XTAL1 and OE are the sensing lines for HVSP adapter. Remember that you need to disconnect them when repairing HVPP chip. 78L05 is sufficient for this task, it will...
View ArticleAutor: FloriN
OK, I don’t know too many advanced things about microcontrollers :(… I studied Attiny13’s datasheet and I was looking for some correspondent pins for high voltage programming, something as on doctor...
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