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Math seems to not work
enzo1522 wrote: temp = ((note-69)/12); freq = (pow(2,temp)*440); result = (unsigned int ) freq;   Try using     temp = (( (float)note - 69....
Tuesday, 21 July 2020 - 00:59
Atmega 16A-PU Port B not working.
Try adding a 100nF capacitor from the Reset pin to ground. This ensures that the 16A is powered for about 1ms before releasing Reset.    Not sure if this will change...
Saturday, 18 July 2020 - 06:27
Atmega 16A-PU Port B not working.
1)  What is the source of the +5V?  Have you measured it with a volt meter?   2)  I see that you have several 100nF caps on the breadboard, which is good....
Saturday, 18 July 2020 - 04:53
Atmega 16A-PU Port B not working.
The LED connection does not look right.  Does not match the schematic. It looks like the LED is connected between pin 1 and pin 2 of the 16A. Is this the way it is still...
Friday, 17 July 2020 - 16:12
PORTC problem on ATMega32A
How is +5V connected to the 32A? Is it connected to both Vcc and AVcc? Do the two power pins have 100nF bypass caps?   Edit:  Are both Gnd pins connected to ground?...
Friday, 17 July 2020 - 15:34
Fatfs clarification
Here is a tutorial by  ubark42 on getting the FATfs to work on AVRs:     [TUT] [C] Getting SD/MMC card working painlessly with FatFS (Link).   The above...
Monday, 13 July 2020 - 05:51
Ok, can somebody please explain what's going on? Same project....
OldMicroGuy wrote: uint8_t global_button_count = 0x02;   Should be: volatile uint8_t global_button_count = 0x02;
Sunday, 12 July 2020 - 23:40
Spring in digital mutimeter
pajuhesh80 wrote: There is a spring on my digital multimeter PCB (DT-830B): It is really soft and weak so I don't think it is there to help opening back cover! Any idea?  ...
Sunday, 12 July 2020 - 20:50
Functional Safety?
Found this in EDN and thought it might be of interest:   "Attaining functional safety: Hazard analysis and risk assessment" by Hoiman Low of Texas Instruments  (March 7...
Sunday, 12 July 2020 - 06:17
Correcting the M4809 RTC?
Have you looked at AN2633: Precise, Ultra-Low-Power Timing using Periodic Enabling of the 32.768 kHz External Crystal Oscillator for Recalibration of the ULP Internal Oscillator...
Thursday, 9 July 2020 - 20:40
Error when i Select ATtiny406
The 406 is part of the Zero series which uses different symbols.   See this thread:  GCC - option to print all defined macros   This will create an output file with...
Tuesday, 7 July 2020 - 21:20
Custom Atmega32u4 board not getting recognized by windows even though bootloader flash was successful
If the bootloader is running, don't worry about the 100nF capacitor on the Reset pin.   One thing you can check is to measure the 22 Ohm resistors connected to the D+ and D-...
Sunday, 5 July 2020 - 19:34

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