Post Created date
Cheap way to sense 24VAC?
I am facing a similar situation. In my case I just want to monitor and log when the signal (24 VAC) is on or off. I am thinking that perhaps a small AC relay could do the job (?)...
Monday, 5 August 2019 - 03:25
End of Life for the ATAVRISPII??
Well I had to chuckle about the DigiKey nonStock item with 1000 in stock . Also, A quick chance to use the 'new' web site. I don't get here often , so the new site definitely...
Sunday, 2 November 2014 - 23:01
AVR 7SEG display
Don't know if this can help, I recall the algorithm used on my 'old' Heathkit H8 micro computer. The basic method was to allocate a ram location for each seven segment display and...
Monday, 6 January 2014 - 19:28
Interface Board for ATtiny
If you are looking for a cheap board search for Olimex boards. They don't have any interface for servo's are anything like that. They do have a voltage regulator, crystal and a DB...
Monday, 26 August 2013 - 00:56
220 AC line interfering signal line
Have you isolated the DSC panel? Could it be giving false outputs due to power issues when switching on/off the 220 line? Usually the DSC panels use a battery backup as well. What...
Thursday, 15 August 2013 - 16:08
What do you want to see on AVR Freaks?
I second the suggestion(s) to stay away from social media sites. Don't do that.
Tuesday, 13 August 2013 - 14:12
Ideas on de-bouncing this circuit?
There is an Atmel application note 240 that describes a decoder as well. I was able to modify it using C (ICCAVR) and was able to eliminate the external resistors by using...
Friday, 9 August 2013 - 23:12
Simple Laser Alarm system
There are also Infrared sensors that use a IR source and a reflector built in to one device. Perhaps that may work? Quote:PIR is out of the question due to cats and bats. Don't...
Friday, 9 August 2013 - 22:57
Ideas on de-bouncing this circuit?
I recall a device 74C922/74C923 which will encode a switch matrix with hex coded output and a couple of other external signals to indicate when a 'new' key is pressed. It only...
Friday, 9 August 2013 - 21:27
Simple Laser Alarm system
Just curious here, can another technology be used here for detection vs. a laser? Perhaps something as simple as a PIR ?
Friday, 9 August 2013 - 21:10
Mega128 development board
david.prentice: Quote:It looks fine. David, have you used the board or dealt with the company? I think they are located in North Carolina (USA) and must not be a very big company.
Monday, 22 July 2013 - 17:23
Mega128 development board
Clawson, I was asking if anyone had comments about the board. Instead you presented a lot of questions about why I might be interested in that particular circuit board.:?:...
Monday, 22 July 2013 - 17:05