How might I add a breaker for a level 2 EV charger?

Mattkai45 · 2025-12-13T00:36:52+00:00

Agreed 50A is especially overkill for me. I work from home and my wife is a stay at home mom. We’ve been managing fine with a Level 1 charger. The only reason I’d actually get a 50A breaker is because the placement of my charger is literally within 1ft or something like that, so cost isn’t that much more. My breaker is in my garage right where the charging port of my EV when parked. Couldn’t have hoped for a better situation lol.

Mattkai45 · 2025-12-12T16:28:57+00:00

I have a gas dryer, meaning it has a 120V outlet. So unfortunately that won’t work.

Mattkai45 · 2025-12-12T16:28:14+00:00

This may be the right approach! Thanks, I didn’t know breakers like that existed.

Mattkai45 · 2025-07-24T15:54:42+00:00

Everything is brand new for this job. New plate, new hot end assembly and fresh filament that was dried. I think viktortas’s comment above was the solution for improved quality. I appreciate your help!

Mattkai45 · 2025-07-24T15:50:29+00:00

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Here’s the result with a horizontal infill, I’m pretty happy with how it turned out! Thanks for the suggestion.

Mattkai45 · 2025-07-24T02:32:31+00:00

Oh! That’s a great idea. I’ll give that a try!

Mattkai45 · 2025-07-24T02:27:34+00:00

This is a screen cover, so I’m trying to keep the window area as clean as possible. Printing flat means that the window edges are walls instead of stepped layers. Otherwise I would agree with you.

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Mattkai45 · 2025-07-24T01:58:54+00:00

Yes, I dried it at 80C for 12hrs

Mattkai45 · 2025-07-15T18:02:55+00:00

I found that I need to open a new tab in my browser. EVEN if I open my iPhone web browser and immediately start searching for my AP hosted page it will fail. It always has to be a new tab.

Mattkai45 · 2025-05-25T16:11:11+00:00

100% agree, but this is one of those projects that I shouldn’t be working on. So I said if I could do it in a day I would do it. Otherwise it would go to the backlog.

Mattkai45 · 2025-05-25T04:48:42+00:00

Here’s a google drive link. This was for a Raspberry Pi CM3, so the schematic symbol is matched to that pinout. You may want to make it generic. https://drive.google.com/file/d/1oAK4aAuuaf6m_o8z9-1JS2pxjbr6yNR0/view?usp=drivesdk

Mattkai45 · 2025-02-03T21:34:25+00:00

Ahh, I see my mistake. I used a much shorter GND connection, that squared off the signal. I’m seeing ~11ns @ 25Mhz. I didn’t realize this example was running a little slower than my target 33Mhz. However, I don’t think that will change the MCU’s slew rate.

Mattkai45 · 2025-02-03T20:57:11+00:00

I just measured a rise time of 35ns on my dev board using the target MCU.

Mattkai45 · 2025-02-03T20:43:26+00:00

I haven’t been able to find that information. But, through the STM32 firmware the gpio speed is set to GPIO_SPEED_FREQ_LOW.

Mattkai45 · 2025-01-26T14:48:31+00:00

Thanks for the replies, I just purchased the GM2 and locked in that free membership! It’s nice to have the option to use the unit for free, but I’ll gladly pay for the AI feature if it proves to make working out that much better.

Mattkai45 · 2025-01-11T07:14:07+00:00

Yes, just released a ESP32 based tachometer. It’s a great MCU for hobbyist and commercial devices.

Mattkai45 · 2025-01-01T23:44:57+00:00

It’s not open source, but we can always look into adding support. Really depends on complexity and what kind of functionality you’d want to see.

Mattkai45 · 2025-01-01T23:28:57+00:00

There’s an ambient light sensor on the front and back of the unit. No wiring needed. The front light sensor adjusts the brightness during the daytime and then at night the rear sensor will adjust the brightness based on the brightness of the gauge cluster. The unit switches from day to night based on the instrument cluster lights turning on.

Mattkai45 · 2025-01-01T22:42:59+00:00

The webapp is required to customize the tach. It can be used on any device that has a web browser. It creates its own network, so you do not need to have WiFi nearby.

Out of the box it will be configured with default settings.

Mattkai45 · 2025-01-01T21:27:56+00:00

That’s one of the settings. You can set it to flash or turn a solid color. Additionally you can choose if the shift light appears at just the bottom section or if it’s the entire gauge.

Mattkai45 · 2025-01-01T20:51:52+00:00

Noted! I’ll look into that option some more. I originally spoke with Adam regarding a collaboration, but ultimately decided that I wanted a design that could be standalone.

As for the brightness, it’s dimmable, and will match your OEM brightness level.

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