.:madworm:.'s photos with the keyword: for sale

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.

I'm glad it works. Now I can add these to the shop without a dark shadow looming over me.

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.

After hours (perceived) of filing and cursing I got the header to fit. Damn tolerances. The latest revision comes with slightly larger holes, so the issue should be solved.

Never go to the US of A without a stash of quarters! The most important thing to know is that coin-laundries take quarters - lots of them. Even community washing machines / dryers at apartment complexes require them. A must have.

It works reasonably well, although in real-world applications the IR sensor would probably have to be placed elsewhere (i.e. add wires).

If there should be a reincarnation of this board at some point, it would probably have dedicated PWM drivers. To allow for further shrinkage, I will have to use a tinier AVR package and probably get a hot-air thingy.

I'm glad it works. Now I can add these to the shop without a dark shadow looming over me.

I had to change the small vias to 25/13mil. Nevertheless the board was barely routable. Initially I wanted individual control of the 0805 LEDs, but that was impossible to route. Now they all just turn on/off.

I had to change the small vias to 25/13mil. Nevertheless the board was barely routable. Initially I wanted individual control of the 0805 LEDs, but that was impossible to route. Now they all just turn on/off.

Illustration for the "manual" Make sure to view full size (550x665), as flickr's rendering of resized PNG images is terrible.

Design files, code and documentation .

Design files, code and documentation .

Today I built this one with through-hole components. I chose to make the common-anode variant only, as I'll be using it with a constant-current LED driver for testing code. This SMD version can be used in either common anode or cathode configuration.

Yesterday I built the little Halloween project and today I get these in the mail... The SMD components are just for show, and there seems to be an issue with the pot's silkscreen. Maybe I had a different type in mind when I made the board? The boards were made by IteadStudio.com - it took the usual 2 weeks, half of that was the transfer and customs delay. I ordered 10 boards and got 12. All are usable as it seems.

V0.1 board assembled. It works OK once all the bugfixes have been applied to it. Left-over PCBs might be found here .

Fed up with wiring up LEDs just for debugging code. Now it's just 'plug-n-play'. Shipping of the boards took 4 weeks again ;-( A few theories: 1) Mailing in December simply sucks 2) Someone at the customs office hates me 3) New regulations to pester people by delaying shipments 4) Extensive scanning of mail for illegal / hazardous substances 5) Some sort of conspiracy against purple PC-boards 6) All of the above A simple Arduino-library for the MBI5030 can be found on github .