Post Created date
SU-10A Speech recognition board
In the late 1970's I worked at a company that made speech recognition products. The devices were 3U (5U?) rack mount. They had either an embedded DEC LSI-11 or Data General...
Friday, 10 June 2022 - 20:33
How do you list all functions and classes (struct) from within Arduino v1.8?
Secondly, how do I uninstall built-in boards and libraries which I do not need?  You find where the libraries are in your Arduino library folder, and delete them by hand....
Monday, 9 May 2022 - 03:47
Dealing with an -Wincompatible-pointer-types warning
Couldn't you add a rawbytes array to the union and avoid all the wrangling outside? Also, the two uint16s only cover half the uint64. That's OK in your app? uint8_t rawbytes[8];...
Sunday, 8 May 2022 - 02:27
Why was the external interrupt vector name chosen same as the interrupt for 3 of the pins?
 PCINT0, PCINT1, and PCINT2 are all within PCINT[7:0]  Huh? No.  You have 24-ish pins that can generate interrupts.  So there are three registers to enable...
Tuesday, 3 May 2022 - 01:09
One for the analog engineers
Here's a snaller, home-brew version:      
Tuesday, 8 March 2022 - 04:42
One for the analog engineers
Someone else will know if €299 is a "good price" but it looks like a lot of fun Five integrators, two multipliers, relays to set initial conditions. Good to two decimal places....
Tuesday, 8 March 2022 - 04:26
PB0 works, PB2 doesn't
>  return PINB & _BV(PB0); It's not a bool return, it's just a number that results from the 'and' expression. 
Wednesday, 9 February 2022 - 03:36
White noise generation ?
In #39, that is not a pink noise source. It's just a low-passed white noise source.  The spectrum is not 1/f.   The MiniMoog had a pretty good pink-noise filter;...
Monday, 17 January 2022 - 21:50
Odd Frequency Crystal Needed
I think we're misreading that frequency band chart...   SLF is 30Hz to 300Hz    ULF is 300Hz to 3kHz   VLF is 3kHz to 30kHz   So audio tones range from...
Friday, 14 January 2022 - 02:00
mismatch error
Serial Number :  0x6E 0x75 0x6E 0x6B 0x77 0x6F  In ASCII that becomes "nunkwo" which sure looks like swapped character pairs of "unknown" with the last 'n' dropped/...
Monday, 13 December 2021 - 17:10
Interrupts and inline assembler
The AVR LIB has several examples:   Under "Manually defined ISRs" on it says:  Another solution is to still implement the ISR in...
Wednesday, 17 November 2021 - 01:46
attiny13a shortage
Going to showed that Rochester Electronics seems to have the ATtiny13V in thru-hole in stock They also have the...
Monday, 20 September 2021 - 18:55