AVR BASIC Computer....

[donotdespisethesnake]

A nicely obscure C gotcha. https://github.com/fuzzymannerz/AVR-BASIC-Computer/issues/2

[Kilroywashere]

 Yep i'm still flogging a dead horse  ... Still cant get it to work but i started to look up how to make a serial monitor with the arduino  uno ... having issues getting anything to display on the tv still....


I do wonder if anyone has gotten this AVR Computer to work?

I do have a question , Someone had posted a reply about that it is good practice to connect VCC with AVCC .... is it better to hook up the atmega 1248 on breadboard with its own power supply in appose to using the unos power? 




Anyway im not giving up on this project ... and i will continue to try to get  anything to work


Please post anything you think might be useful to me  or any alternative projects like this.... Thank you guys for  any help you may have done already

[donotdespisethesnake]

I do wonder if anyone has gotten this AVR Computer to work?

Yes, several people... But what hardware are you actually trying to get to work?

I was going to order a PCB but it seems the originator of the project is no longer active, and Dans Electronics no longer exists. This weekend I might create a PCB in Kicad.

[Kilroywashere]

I really need help guys.... Im at my wits end  its been a long time and i just cant get this to work.... Im just to dumb....

I have even tried this project https://www.instructables.com/id/Arduino-Basic-PC-With-TV-Output/

But i cannot get the slave to work ... and the guy has not left any numbers to pins or anything .... so i have to guess where they go .... the issue is  its a SMD arduino and i have a dip package ....


I really need some help... If someone could spare me a few min of there time  to maybe help me get  the slave part to work



Since the TV.Out is just to hard to get to work  on tiny basic I thought this one would be better cuz it uses a serial monitor to get it to work.....  and this "SLAVE" outputs the serial to the tv ...

I dont know why this had turned into a nightmare .... but it has and now i cant give up.... Please give any advice or link to videos  that might help me ....

Thank you so much ...

[iMo]

In case you work with naked DIP package, the first step is to download its Datasheet and get familiar with pin names and numbering.

The linked page says:

The master Arduino sends the data to the slave trough the orange cable, i.e. master pin 1 (Tx) to slave pin 2 (Rx). If you need to re-upload some code, you should disconnect this cable first.

The note above says the master sends the data to slave via the serial UART.
I would advice you to insert a 470ohm resistor into the Tx->Rx wire in case you mess something up.
Also the grounds have to be interconnected in order to get the serial work.

The arduino bootloader works via Tx/Rx, therefore the advice to disconnect the master-slave wire when updating the sketch.

Messing with naked DIP or SMD atmega328p or atmega32 or atmega1284p, or with 3rd parties boards, requires a pretty good understanding how the "Arduino Boards pin numbering" vs. "XY Board's pin names/numbering" vs. "DIP/SMD package pin names/numbering" works.


Again, there is a great Arduino forum at https://forum.arduino.cc/ where the Arduino experts answer almost any question to beginners.

[mikerj]