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When I ship things I absolutely have that option, but my customers typically complain about the speed so they spend a little more rather than having it take 3 weeks to get to Canada, 6-8 weeks to get to Europe, and the record so far of 3 months to get to Australia.

Yup if you refuse to pay it the shipment gets returned. I haven't really looked into this for the US yet, but one of my Canadian customers recently bought a $400 pedal from me and UPS was trying to charge him something like $150 in brokerage fees. He ended up calling the customs office himself...

A fair point, yup. I would hope the brokerage fees would scale proportionally to the customs duties paid, so they would be negligible on small shipments, but that may not be the case.

I doubt you'll be seeing brokerage fees on orders like that. I think I've only had the "no customs duties but brokerage fees anyway" things once, and only with UPS, and it was on a ~$500 order.

Country of Origin is a slippery one with some loopholes. I was talking to my Vimex rep and he mentioned that they had a customer with requirements that no components come from mainland China, but they needed a rotary switch that was only produced in their China factory, so their solution was to...

True with Tayda, unfortunately not with JLCPCB. Tayda gets to a point (I think it was around $400?) when shipping goes to $1, JLCPCB just keeps going up with the package weight.

I usually go to UPS for my orders since the DHL prices went up. Speed is similar to DHL but usually 50-60% of the price. I'm way too impatient for the slow boat option. I continue to use JLC because I get SMD assembly on most of my boards, and assembly in the US is prohibitively expensive, and...

Because if I put the PCBs up then I have to post the build doc and drill template :P I'll see if I can find some time to get them up this week.

I have, but not as bad. Came out to about 30% of the declared value on a JLCPCB order. I have a couple more in process right now, we'll see what happens. UPS is the only carrier that has charged me brokerage fees. I had a reasonably large PCB order a few months ago that I carefully kept under...

Also, make sure there's nothing stuck to the board like this.

That's not even close to enough my dude, this thing pulls 700mA from a 12V supply when it's fully warmed up, which means to get it warmed up I would recommend at least 800mA, but ideally 1A if you can get it. EDIT: also don't power it up with the NE555 removed, it causes the MOSFET to overheat.

What power supply are you using?

Looks to me like those are the letter O and not the number 0. So possibly an abbreviation for positive and negative Output voltage? Reasonable to assume that's the rail voltages for the NE5532

I dunno. This thing. It's a pedal or something.

Quick update on this, Haufe has been sending me another email every few days asking for more little bits of information about who I am and how I plan to use these. They still haven't sent me a quote for them.

True, that's why we still shop there even without the coupons, but they used to be even more discounted.

I mean you basically already did, if a multimeter set for resistance is showing a high resistance or an open, then the primary of the transformer is damaged. So if you want to double check obviously that's not a bad idea, but I trust your readings. I've had this a couple times as I've tested...

You're probably right. Haufe asked for a bunch of my information so they can set me up as a customer in their system, then they can process a quote for me for a prototype/evaluation run of 10 units.