|At 18 May 2014, 4:29:23 user Cristi wrote: [reply @ Cristi]|
Hello. Idea is OK, but not necessarily quite discontinuing of Vcc from pickit3?
At 24 September 2013, 19:11:30 user jdraughn wrote: [reply @ jdraughn]
You might want to insure that the switch you use is a make before break, otherwise the voltage will spike as you switch from one voltage to another.
At 23 September 2013, 21:20:51 user solipso wrote: [reply @ solipso]
Nevertheless, the idea is great as we, lazy dogs, always like to power our PIC circuits directly from PICKIT - regardless the current needed. Your hack justifies this bad habit and makes us look a bit less silly, though.
I also like these switches very much, especially with multiple poles and with good contacts (surely not those eBay cheapies with 0.3 to 0.7 Ohm ON resistasnce).
At 23 September 2013, 17:09:18 user Giorgos Lazaridis wrote: [reply @ Giorgos Lazaridis]
@solipso My original design involved a HDD jumper. Jumper ON means 5V, otherwise 3.3. It was safe enough, but then i saw my stock bin with these sweet slide switches... I just could not resist.
At 23 September 2013, 13:58:58 user solipso wrote: [reply @ solipso]
Surely it does! :-) Nevertheless, this is based on my very own experience. I have had something like this on my breadboard PSU and I killed quite a lot of devices stupid enough to get killed by humble 5V before I realized to shorten the lever to about 3mm, which proved to be enough to switch easily, but intentionaly only.
At 23 September 2013, 13:50:38 user Giorgos Lazaridis wrote: [reply @ Giorgos Lazaridis]
@solipso And this makes things more interesting, doesn't it???
At 23 September 2013, 12:16:23 user solipso wrote: [reply @ solipso]
The long protruding lever of the voltage switch literally asks to be switched to 5V when the rig is connected to 3V3 micro and let the magic smoke escape free.
HOT in heaven!