Post Created date
LED driver for control panel
The more math and thinking about this the more likely that I'll just use a 555, transistor or mosfet, and a pile of resistors for each LED so I can use the 5 volt supply. Now the...
Sunday, 13 March 2011 - 01:06
LED driver for control panel
Trying to avoid building a 5 volt power supply but it is looking like I may need to run things on 12v. There is an ON-Semi controller that will do 4 channels and 3 LEDs in series...
Saturday, 12 March 2011 - 23:04
Very basic question - latching circuit for momentary switch
I can't fit a latching switch on the circuit board with the other low profile tactile switches or that would be my first choice because it would be easy. This is also on a device...
Tuesday, 8 March 2011 - 04:19
SMD - I keep reading how it is easier, convince me!
I'm just starting down the road by making smaller and smaller projects. I will suggest that with a hot air station you really should have a bottom side preheater. I just picked up...
Sunday, 19 September 2010 - 01:32
Toner Transfer Method: Try number 1
Changing the pad size in FreePCB is fairly simple, just edit the footprint and change the pad size, then highlight all the other pads that you want to be the same size and save,...
Friday, 17 September 2010 - 13:52
Graphics LCD, Flex Tail, "Hot Bar" soldering... Serial data and a wide PDIP construction.
Wednesday, 15 September 2010 - 21:47
Utility or a method to output Gerbers
Like everything it has limitations, but seems to work really well for the cost. I would suggest just sitting down and making your own footprints from data sheets, there is a...
Wednesday, 8 September 2010 - 19:34
Utility or a method to output Gerbers
FreePCB works and outputs Gerbers and .png files.
Tuesday, 7 September 2010 - 19:33
Aoyue 853A board pre-heater?
It's here... Build quality is well... It's built and I guess I shouldn't expect too much more than that for the price paid. The board holder thing is pure junk, definitely going...
Friday, 3 September 2010 - 00:50
Aoyue 853A board pre-heater?
And to hedge my bets I just bought a laboratory grade small hot plate used to heat glassware up to about 3 inches in diameter. Specs say it should go up to a little more than 700...
Tuesday, 31 August 2010 - 01:19
Aoyue 853A board pre-heater?
Stuff like that is not tolerated where I work, they constantly give us crap about the office microwave oven and the refrigerator. The inspectors like to make up rules and enforce...
Sunday, 29 August 2010 - 20:40
Aoyue 853A board pre-heater?
One of the problems is that I need to keep this in the college where I work, so it needs to look like a real tool. The fire inspector would freak if he saw a toaster oven sitting...
Sunday, 29 August 2010 - 18:57