Post Created date
development board to start learning ARM
Are you starting to learn ARM because you need to design new products that use inexpensive, but powerful microcontrollers?  Or, do you need to learn ARM because you have...
Wednesday, 24 February 2021 - 11:26
Learing the wonderful art of ASM but still need help.
I believe that the reason that the construction:      dec  r18      brne someplace   doesn't work is due to the internal...
Friday, 19 February 2021 - 20:32
I2C communication for Atmega4809
According to the datasheeet, the RC522 IC has its 7-bit I2C address defined according to the logic on the EA pin of the IC.   Is this pin wired to HI or LOW on your...
Thursday, 18 February 2021 - 17:25
Bit definition in AVR Assembly
Don't forget that in AVR assembler some of the bit-wise instructions refer to a single bit's position (7 though 0) while other bit instructions have arguments that refer to...
Saturday, 13 February 2021 - 12:59
Reverse Eng. from Gerbers to boards/schematics for editing
A Gerber is a file type that assumes that you are dragging a dot light source over an unexposed photo film. It uses coded number instructions to do things like:   ...
Thursday, 11 February 2021 - 20:30
Avr or 6502 for 8bit gaming
The AVR or main CPU does not form the pixels.  The display controller IC does.  In the case of your game using VGA, then the AVR CPU on the Arduino is acting as the...
Tuesday, 9 February 2021 - 19:26
if (variable) {
I've always been uncomfortable with the concept that "false" is value 0x00 and "true" is any non-zero value, that is the accepted format in C and most other languages.  It is...
Monday, 8 February 2021 - 18:26
programming/ library tips (new to AVR)
I suggest getting an Arduino "Nano Every" development board.   It has an ATmega4809 and full support of the Xmega naming conventions that are used when programming on...
Sunday, 7 February 2021 - 18:09
Cant get the USART_RX vector to fire
If you're not getting any output it could be for several reasons:   -  The application is not being loaded into the ATmega328P.   -  The USART is not being...
Sunday, 7 February 2021 - 14:18
TONE control with AVR/8051 without I2C
Are you asking us if we know of any inexpensive available ICs that accept digital input to change the tone filter response of a stereo audio signal? I don't know of any, but there...
Thursday, 4 February 2021 - 17:55
Help need to make a simple clock
When you say that you are making a clock with an ATmega8 and 7-seg display, do you mean that:     - the AVR is controlling the (I assume) four 7-seg displays?...
Wednesday, 3 February 2021 - 22:25
Desktop power supplies
Could you get by with adding your own case and knobs?  The Amazon units shown are self-contained bench-top designs in the 60-100 UK pound sterling range (@$90-$140 USD)....
Wednesday, 3 February 2021 - 00:24

Pages