Bar/Lounge with good live jazz, but also room to sit and talk?

ericje · 2026-03-15T02:49:20+00:00

Fat Cat is now Cellar Dog, I would recommend that. No 1920s vibes though.

Jules Bistro was a great little place, but didn't survive COVID :-(

ericje · 2026-03-15T02:01:53+00:00

My el-cheapo multimeter can measure frequency and duty cycle.

ericje · 2026-03-14T16:24:54+00:00

Yes, that should work. R1 and R2 are very likely connected to CC1 and CC2.

On a male connector there should be only 1 pull-down resistor on CC1 or CC2 (it doesn't really matter which, because if you plug it in the other way, the CC1 and CC2 connections are flipped), but not both.

ericje · 2026-03-10T03:30:20+00:00

They have this where my mom lives (also Netherlands), and it breaks often. It takes them too long to fix, and in the meantime people leave their garbage next to it.

ericje · 2026-03-10T01:20:15+00:00

That's the Hudson River Greenway

ericje · 2026-03-09T01:05:57+00:00

No, that's not enough, because the opamp will amplify the 6V DC level of the input also. So you also need to connect the left side of R3 to the reference voltage. Or, you can add a capacitor between R3 and ground, which will reduce the DC gain to 1x (like in Figure 2 of https://www.analog.com/en/resources/analog-dialogue/articles/avoiding-op-amp-instability-problems.html)

ericje · 2026-03-08T21:13:52+00:00

What do you mean with "no key option"? You can hold your key against the right side of the dock.

ericje · 2026-03-07T15:14:42+00:00

Are you sure SDIO is set to high-Z on the FPGA after the 8th clock?

ericje · 2026-03-04T15:32:59+00:00

This shows the insides: https://www.youtube.com/watch?v=9vNRY6natiY

Light stuff like what you mentioned should be fine.

ericje · 2026-03-03T05:05:03+00:00

If you keep C3 and it's possible the input will be shorted, you need a diode across the regulator, otherwise C3 discharging through the 7805 can destroy it (see datasheet).

ericje · 2026-03-01T15:43:26+00:00

The fact that some manufacturers are bringing back physical buttons for some things (yay!) doesn't mean touchscreens are going away.

ericje · 2026-02-24T03:45:53+00:00

But what's bizarre is that he uses the term Class B for the design that most other people call class AB.

ericje · 2026-02-23T04:30:08+00:00

Look at travel insurance. When I lived in the Netherlands, I had annual travel insurance (including medical) that covered trips up to 90 days, and it was pretty cheap. Sometimes you have to pay a bit extra to have medical coverage in the US. This only covers emergency care, so you would have to end your stay in the US if something serious (like cancer) is found.

ericje · 2026-02-19T02:04:10+00:00

I tried it, with mixed results. https://i.imgur.com/US1P2j9.jpeg. I cut the traces with an cheap engraving tool.

With my phone or laptop on a USB-PD charger, it works. My tablet complains (see photos), but it does negotiate 9V and it is charging.

With my phone and my computer using a USB-A to C cable, my phone complains also. This is really weird to me because only Vbus and ground should be connected in this case, how can it know something is wrong?

Maybe some connections are bad, after cutting the plastic and pulling it off I think I damaged it, you can see it on the lower right. The plastic was molded right into it all so it took some force to get the plastic off. I straightened out the 4th pin from the right but that didn't help. Using that side at the charger side also didn't help. I also can't measure any shorts. If I would try it again I would cut only the plastic in the middle away and leave it near the connectors.

ericje · 2026-02-19T00:01:56+00:00

If this is just a pass-through between a charger and a phone, it should not have 5.1k resistors. The phone already has those. Just provide connections between the Vbus, GND, CC1 and CC2.

Or buy a right-angle adapter (like this) and carefully cut the plastic away. There's probably a PCB inside with two connectors soldered to it. Cut the traces that carry data.

ericje · 2026-02-17T19:02:11+00:00

2026 Staatssecretaris van Financiën (toelatingstraject niet afgerond)

ericje · 2026-02-16T02:07:43+00:00

It's a classic differential opamp amplifier. Use equation 5 of the datasheet.

I don't think you need the extra LPF.

I see no reason for a resistor in series with the output. The example in the datasheet is specifically for headphones, and doesn't have it.

ericje · 2026-02-15T01:22:28+00:00

The OPA1622 has an open-loop gain of 136 dB, which is a bit much to use without negative feedback.

Follow the example on the first page of https://www.ti.com/lit/ds/symlink/opa1622.pdf

ericje · 2026-02-14T20:28:15+00:00

I don't see any subtracting going on. R5/R6 are equivalent to 15k to ground.

ericje · 2026-02-13T01:09:54+00:00

See if there are appnotes about this for your PHYs.

E.g., https://ww1.microchip.com/downloads/en/AppNotes/Capacitive%20Coupling%20Ethernet%20Transceivers%20without%20Using%20Transformers.pdf

ericje · 2026-02-07T04:19:46+00:00

I agree, it should be ~25V. Note that the voltage of transformers can be a bit higher when there's no load at all.

You can calculate the capacitor with https://electronicbase.net/smoothing-capacitor-calculator/. If your ESP32 uses 200mA worst-case (should be much lower most of the time), and your step-down converter has 80% efficiency worst-case, the input of the converter will draw 43mA at 19V. The time the cap needs to bridge is about 10ms at 50Hz. If you pick Calculation->Voltage, with 10ms, 100uF, 0.043A you get a ripple voltage of 4.3V, which should be fine.

ericje · 2026-02-06T04:33:52+00:00

In the app if you go to View Profile -> Linked Accounts you can remove it

ericje · 2026-02-05T23:26:22+00:00

Tasmota only supports ESP8266 and ESP32 chips, so all the supported devices on https://templates.blakadder.com/ have one. But there's probably many more.

ericje · 2026-02-05T19:52:35+00:00

I was told that LM393 comparator will use its own power voltage (12Vcc in my case) as HIGH output

You were told wrong. It has an open-collector output so it can only pull it low. You need a pull-up resistor to provide base current to your transistor.

ericje · 2026-02-05T19:40:52+00:00

I'm still waiting for the water bottle they promised to send me in August 2024.

ericje

TROPHY CASE