.:madworm:.'s photos

My car has declared war on me. The last time the battery was dead, it was the radio. It pulled 500mA in stand-by. Now the battery is dead again... I hope it wasn't caused by some critter gnawing at cables. That could be expensive... Didn't manage to start my car today again ;-( The more I use this thing, the less I like it. I only get about a minute worth of cranking out of it. The battery claims 17Ah, but given that the charging circuit doesn't really permit more than say 400mA of current... I can't really be sure this thing was really full. Maybe the battery is a piece of crap as well. When it didn't even turn the starter any more, the test-button still indicated 75% full. But that only measures voltage... Internal resistance seems a bit on the high side. If the starter pulls say 250A, I'd expect to get at least 2 minutes on starter action out of this thing... I guess I'd haven been much better off buying a car-battery charger... It seems this thing is really only good for assisting a weak battery, not to fully replace it. Oh well...

This pad delaminated instantly! I barely touched it with 300°C.

To be honest, I didn't expect to see a smoothng cap in there.

I say: LIAR.

That wall-wart is a piece of crap. It claims to spit out 12V DC, capable of 500mA. I used my dummy-load to test it a bit. I had to pull close to 700mA out of it to make its output drop to 12V. It will go into the recycling bin right away. Fortuitously I found a switch-mode power supply that goes up to 15V. I'll use that one instead. As the wallwart only consisted of a transformer, rectifier diodes and a cap, all the battery charging logic must be in the car-jump-start device itself. Shouldn't be an issue.

Not my best work, but I was disgruntled.

When I cracked it open, I actually saw the solder 'joint' break. Made by a proud master-solderer, no doubt.

To whom it may concern: My 'Half-Ohm' was in this letter. If memory serves me right, shipping time from Estonia for a small letter was pretty quick.

I really don't know if this panel will ever see the light of day. The boards have MLF10 packages on them, and I'll have to see how assembly goes first! The prototypes were ordered at OSHPARK.

I really don't know if this panel will ever see the light of day. The boards have MLF10 packages on them, and I'll have to see how assembly goes first! The prototypes were ordered at OSHPARK.

It works very well. Made by Jaanus Kalde .

It works very well. Made by Jaanus Kalde .

There is a small hint.

This LED died on the first day. Apparently the manufacturer didn't do a burn-in test.

Lack of zoom.