Comments on: AVR ISP

By: Magnus

Magnus — Wed, 23 Feb 2011 07:47:05 +0000

I see in a post that you have changed the picture but that there are comments that i shoud connect header_MISO to target_MOSI is this not true anymore?

By: Choosing AVR programmer | Embedded projects from around the web

Choosing AVR programmer | Embedded projects from around the web — Fri, 15 Oct 2010 08:11:51 +0000

[...] Example of LPT port programmer [...]

By: Timmy

Timmy — Sat, 26 Jun 2010 07:52:34 +0000

hi,
1. Is pin 1 (MISO) of your 6 pin ISP header connect to MOSI of AVR ATmega chip?

2. Is pin 4 (MOSI) of your 6 pin ISP header connect to MISO of AVR ATmega chip?

3. For power supply, which pin of ATmega8 chip connect to VDD and GND…bcos the chip has pin 7 (Vcc), pin 20(AVcc),pin 8(GND) and pin 22(AGND)?

4. Can i not using external crystal for ATmega8 in this programmer?

thks..

By: Rajesh

Rajesh — Fri, 22 Jan 2010 05:13:53 +0000

Hi Frnds.. i’m using at89s52 mc. i want to connect it to pc by isp cable… will ponyprog support at89s52? if not then which programmer should i use? i tried with isp programmer, but it showing error while writing the program. pls specify any programmer which solve my problem. if possible post the circuit…

By: scienceprog

scienceprog — Sat, 13 Sep 2008 18:39:49 +0000

ISP Header image changed. No more confusion.
Cheers!

By: scienceprog

scienceprog — Sat, 13 Sep 2008 18:36:49 +0000

You may be right or not. it depends. If you have in mind connector on a target board then you are right. But lets take a connector on a programmer itself. Programmers MISO goes to targets MOSI and so on…
Anyway I am going to change the picture as it makes too much confusion for everyone…including me.
Thank you

By: Bob Cousins

Bob Cousins — Sat, 13 Sep 2008 12:50:22 +0000

I don’t know where you got your picture of the 6 pin ISP header but it is not the “standard”. The standard pinout has pin 1 as MISO. In yours you have MISO and MOSI reversed.

If you want to use a different connector that’s fine, but please don’t call it standard when it’s not!

By: Parallel and serial High Voltage AVR Programmer | AVR Projects | MCU project everyday

Wed, 11 Jun 2008 21:02:47 +0000

[...] most of AVR fans are using a simple AVR ISP programmer that can be built from few electronics parts or even without them. But fact is that [...]

By: Nedsan

Nedsan — Sat, 17 May 2008 12:09:06 +0000

Hi. I’m trying to program my Atmega16 with this ISP programmer but there seems to be a problem. When I try to program it through PonyProg it says “Alert/ Device missing or unknown device(-24)”. The pinning seems to be fine. Can you give me some directions. Thanks.

By: Yet Another Simple AVR ISP cable - Scientific, embedded, biomedical, electronics contents.

Mon, 05 May 2008 21:49:28 +0000

[...] port protection. It connects directly to LPT port without precautions. I definitely recommend using similar ISP circuit with buffer IC between LPT and target [...]