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ATmega128 old age
gchapman wrote: Wall warts are low risk though can over-voltage   I'll say!  I have a fairly large collection of wall warts saved from equipment which is no longer in...
Sunday, 7 July 2019 - 19:21
Transmit data between PC/Android phone and MCU
I had forgotten about a weird Arduino board called the Yun, but this thread triggered a memory. You can control the board by sending it http requests like:   http [colon] //...
Friday, 5 July 2019 - 17:08
High Pass DSP?
I'm curious the purpose of the device. To detect wind/weather? Animals in the trees? Chainsaw?   --Mike  
Friday, 5 July 2019 - 05:12
High Pass DSP?
I don't know if I understand the question correctly, but...   Could you maybe use this procedure:   1) sample the current value of a sensor (call it zero) 2) add and...
Friday, 5 July 2019 - 01:29
Content mismatch when using serial but nor on ISP
Plons wrote: Re-check, Mike. Mega2560's are "special", Vcc-wise. It bit me once ....   Oh, yeah it looks like a "normal" 2560 needs at least 4.5V for any speed up to 16MHz...
Friday, 5 July 2019 - 00:45
Content mismatch when using serial but nor on ISP
The maximum frequency spec. in the datasheet at 3.3V is 8MHz.   --Mike   EDIT: this is for the 2560V chip, not plain old 2560  
Thursday, 4 July 2019 - 23:54
How can I send a text character.
I was just commenting that the library could produce more characters on a 7-segment display than it does currently.   --Mike  
Wednesday, 3 July 2019 - 16:11
How can I send a text character.
clawson wrote: /* * Display a character on a 7-Segment display. * There are only a few characters that make sense here : * '0','1','2','3','4...
Wednesday, 3 July 2019 - 13:11
any avr based rf chips?
S_K_U_N_X wrote: Would I be correct in assuming this will not work with the uart on the atmega328?   No, the USART on the ATmega328/P has master SPI mode.  You set the...
Wednesday, 3 July 2019 - 03:12
My internal EEPROM driver is not working
curtvm wrote: One of your problems is this....   #define EECR * ((u8*) 0x3C)   Curious why not #include <avr/io.h> instead? --Mike  
Wednesday, 3 July 2019 - 02:18
[Help] Problem using USBasp to program ATMega 328P
rizkifajarnugroho wrote: I don't want to use the arduino programming language   See this article: Using the Arduino IDE Without Cores --Mike  
Tuesday, 2 July 2019 - 20:30
4Digit 7Segment Display Questions
curtvm wrote: You can also use the timer2 compare interrupt to add a brightness feature   This is great - thanks for mentioning it!   --Mike  
Tuesday, 2 July 2019 - 20:20