.:madworm:.'s photos

The first time that this has happened to me. I had to apply quite a bit of heat to get the DPAK MOSFET to do what I wanted. Apparently the mask couldn't take the heat. I see the advantage of plugged vias now.

Completed the first board of the 2nd revision. The 3rd revision has some minor changes, more suitable footprints and better locations for parts. This one works nicely too. Total power consumption is about 6mA - with the LED on (powered by the pull-up). So far the only power-relevant code shuts off the analog comparator. Maybe the ADC should go to sleep as well.

It doesn't work as I expect it with copper-clad boards, but rather nicely on my desk... DOH!

Apparently I goofed up again. The footprint was a 0603 one, but even for that size it was rather small. The next revision comes with 0805 with wide pads for hand-soldering. So what do you do if the footprint is too small for 0805? You go looking for 0603 LEDs! And if you can't find any of those, you just use 0402 ones ;-) I had to use heavy magnification for this one. The LEDs are so light they easily stick to the tweezers if only the slightest amount of "finger-grease" is on them. It's a good thing I refrained from buying 0201s. They would've pushed me over the edge.

Apparently I goofed up again. The footprint was a 0603 one, but even for that size it was rather small. The next revision comes with 0805 with wide pads for hand-soldering. So what do you do if the footprint is too small for 0805? You go looking for 0603 LEDs! And if you can't find any of those, you just use 0402 ones ;-) I had to use heavy magnification for this one. The LEDs are so light they easily stick to the tweezers if only the slightest amount of "finger-grease" is on them. It's a good thing I refrained from buying 0201s. They would've pushed me over the edge.

Apparently I goofed up again. The footprint was a 0603 one, but even for that size it was rather small. The next revision comes with 0805 with wide pads for hand-soldering. So what do you do if the footprint is too small for 0805? You go looking for 0603 LEDs! And if you can't find any of those, you just use 0402 ones ;-) I had to use heavy magnification for this one. The LEDs are so light they easily stick to the tweezers if only the slightest amount of "finger-grease" is on them. It's a good thing I refrained from buying 0201s. They would've pushed me over the edge.

Well, it wouldn't be a problem for reflow soldering, but just to make sure I switched the footprint for one with longer pads.

No more Donald Trump impersonation for this one. www.ipernity.com/doc/madworm/23328243/in/album/447563

I wish this happened more of the time. Just to make some people realize where the eggs come from. It is a strange mental process that turns animals into food. I guess that some kids don't even associate eggs with chicken, or cows with burger meat. Those things 'grow' in the supermarket.

I had to file down the friggin' headers again... You have to love those 29.5mil holes. I'll have to get machined headers with round pins. And if these don't fit... I'll turn into a gamma flash.

Anything is possible with good paste flux!

I ordered a couple of parts from MicrochipDirect . The overall experience was very positive: rather quick delivery, very reasonable shipping costs (considering it was sent by courier). Oh, I forgot to name the part ;-) MCP1804 Have a look at the invoice and find the bug.

Is it useful? Maybe. I have a couple of existing projects that would benefit from a rotary knob, but not enough code-space is left to add encoder handling. Serial comms is already working, so this is the simpler way to make it work. A little quiz: {1,-1,0,-1,0,0,1,1,0,0,-1,0,-1,1,0}

Is it useful? Maybe. I have a couple of existing projects that would benefit from a rotary knob, but not enough code-space is left to add encoder handling. Serial comms is already working, so this is the simpler way to make it work. A little quiz: {1,-1,0,-1,0,0,1,1,0,0,-1,0,-1,1,0}