Build a circuit that uses ATMega48 PDIP-style chip and an ATTiny26

Projects
1

I’m trying to build a circuit that uses an ATMega48 PDIP-style chip and an ATTiny26(datasheet). I’m stuck on loading code onto the ATMega48 using an Arduino Uno.

I’ve been following these instructions. I got all the way to step 4 when I got this error:
>avrdude -P COM3 -b 19200 -c avrisp -p m48 -n

[...]

avrdude: Device signature = 0x1e920a
avrdude: Expected signature for ATMEGA48 is 1E 92 05
         Double-check chip, or use -F to override this check.

[...]

I did the easy thing and added the -F option, and everything seemed to work out. Then I added the hexfile (following the format specified in the guide) and got this:

    >avrdude -P COM3 -b 19200 -c avrisp -p m328p -u -U flash:
w:"[...]\build2681525234531849420.tmp\Blink.cpp.hex":i -F

avrdude: AVR device initialized and ready to accept instructions

Reading | ################################################## | 100% 0.07s

avrdude: Device signature = 0x1e920a
avrdude: Expected signature for ATMEGA328P is 1E 95 0F
avrdude: NOTE: FLASH memory has been specified, an erase cycle will be performed

         To disable this feature, specify the -D option.
avrdude: erasing chip
avrdude: reading input file "[...]\build2681525234531849420.tmp\Blink.cpp.hex"
avrdude: writing flash (1084 bytes):

Writing | ################################################## | 100% 1.34s

avrdude: 1084 bytes of flash written
avrdude: verifying flash memory against [...]\build2681525234531849420.tmp\Blink.cpp.hex:
avrdude: load data flash data from input file [...]\build2681525234531849420.tmp\Blink.cpp.hex:
avrdude: input file [...]\build2681525234531849420.tmp\Blink.cpp.hex contains 1084 bytes
avrdude: reading on-chip flash data:

Reading | ################################################## | 100% 0.98s

avrdude: verifying ...
avrdude: verification error, first mismatch at byte 0x0002
         0x61 != 0x01
avrdude: verification error; content mismatch

avrdude done.  Thank you.

How do I go about fixing this?

For the record, I’m using the “minimal” configuration specified here:

Arduino → Mega48

10 → 1

11 → 17

12 → 18

13 → 19

2

Is this related to Invenables, or CnC?

3

Does it matter what the question relates to?

I’m only guessing, but it is likely a sure bet that @Docdreemin does his own PCBs (as do many users who read the forum). and his question is directed at those who may do their own PCBs and know a bit about coding…

where is it stated that forum questions must relate to Inventables or their products or CNC in general?

4

I thought it my have some relevance to add some context to his question, so yes.

5

To some extent, it does matter.

Inventables provides this forum to allow the people who have Inventables equipment or software a venue for discussing their products and services.

The forum is a courtesy to their customers. It costs them money to provide this service and with some latitude they would most likely prefer traffic that relates to their business.

1 Like
7

my bet,
like me he has >1 fora open at any one time,
they all sort of look alike,
and he posted into the wrong one.

easy enough to do and I would be disappointed if anyone was offended by an accidental peek into the awesome skills, additional to x-carve expertise, our forum brothers and sisters possess.

FTR, never used AVRDude, so can’t help you, but glad to know there are people who play with this stuff here: some day I hope to start embedding Raspberry Pis into things I carve and when I do I will be seeking you out…

1 Like
8

it does beg the question a bit, if you will indulge me saying so:

as a member of the community here I would like to share side projects or activities not directly related to x-carve, but there is no obvious place to put that stuff on here.
for instance, I recently published a science fiction book on amazon, and would love to make people here aware I did that, but I have not done so as the lack of appropriate container for that discussion makes me think that would be unwelcome.

thoughts on this? Am I wrong?

10

I had put forward the idea of an “Off topic - General Discussion” category. Wasn’t well received.

11

A would have to agree, subjects about Arduino, published books, and Mopar that have no relation to Inventables or CnC should be considered Off Topic. When reading the OP I was confused because I had assumed it was someone’s CnC project they needed help with.

I notice a lack of follow up from @Docdreemin .who joined only a day ago.

13

Should I happen to be one of those, PMs are always welcomed.

14

At the risk of disclosing a super-secret of the forums, how many have seen The Lounge?

15

It is an automatic private area that is reserved for a forum member that has a high level of participation on the forum. You can become a member or lose membership based on your usage of the forum.

All I know.

16

Access Denied.
there’s a surprise.

17

You’re not missing anything.

18

It’s pretty dead. I revived a post that was almost 300 days stale, just because.

19

I used to use avrdude years ago.
There is a board where you can get loads of help.
Avrfreaks
just search it and you will find it.
I have been on there from time to time and those guys know their stuff.
good luck

2 Likes
20

dear sir, thank you for sharing it, I am finding the pdf of ATMega48. I found ATMega48 on Jotrin Electronics Limited. To be honest, their price is ok, but I want to visit more online shop for choosing electronic components. Therefore, can you recommend some good shops for me? Thanks in advance.