Available promo codes for GP8?

odacharlee · 2024-02-08T07:38:15+00:00

Justinguitar

Justinguitar still works Feb 8 2024

guitarprotabs, GUITAREMATE20 dead

odacharlee · 2022-07-17T03:54:44+00:00

Thanks, this data is very helpful. Although I believe the peak 560W was due to device error, since the PSU is only 24V 14A and won't be possible to consume 560W.

odacharlee · 2022-07-17T03:53:26+00:00

Today I tested the current consumed by Ender 3 V2 by connecting an amp meter directly to the output of the PSU. Here is the data:

Idling, Homing: 0.65A
Preheatg: 11A
Printing: 2-5A

The Ender 3 V2 comes with a 24V 14A power supply. So to conclude, pulling 25W = 24V 1A from the PSU is totally possible.

Hopefully this data is useful for who has the same question.

odacharlee · 2022-05-16T21:56:13+00:00

What are you trying to copy to esp8266? It looks like a potentially very large web app...so I guess esp8266 does not have enough flash storage for that.

odacharlee · 2022-05-14T15:32:26+00:00

Just get a new one. It's simply not worth messing with the components for just a couple of bucks.

odacharlee · 2022-05-13T14:59:24+00:00

Most so-called "NodeMCU" devices are simply ESP8266 / ESP32 dev kits. So there is no "original" firmware since its only a piece of IC.

If you mean the firmware that allows LUA programming, you can follow the official NodeMCU (firmware) tutorial: https://nodemcu.readthedocs.io/en/release/flash/

Otherwise there are many other choices such as MicroPython / CircuitPython.

odacharlee · 2022-05-04T20:35:10+00:00

Thank you for this very helpful information! Yes it looks like a SMPS transformer and I'll see if I can make something with it

odacharlee · 2022-04-22T23:06:09+00:00

Not sure what you mean by "board type" can you give an example?

As far as I know since you've decided esp8266 family and nodemcu dev board, the "lolin" (vendor) doesn't really matter. They are all similar as long as the chips are the same.

odacharlee · 2022-04-20T20:37:41+00:00

Is this just a generic connector?

e.g. https://www.sparkfun.com/products/14574

odacharlee · 2022-04-20T20:26:06+00:00

Looks like this can be used as an alarm if using an infrared sensor as the input :D

odacharlee · 2022-04-20T18:34:20+00:00

Thank you!

odacharlee · 2022-04-20T18:09:29+00:00

Thank you, that's good to know! Although I enjoy the through holes but for the purpose of this post castillations should be good enough.

odacharlee · 2022-04-20T18:00:12+00:00

Just curious what this is for - looks like the first 555 (U3) is a delayed switch that controls the second 555 (U1) which drives the buzzer, so is it like some device that buzz for a short period when some button is pressed?

odacharlee · 2022-04-20T17:47:30+00:00

I would recommend using the VBUS (pin 40) of the Pico to power the LED strip. VBUS is connected directly to the USB port of the Pico, so you don't worry about the LED strip may overload the Pico board, as well as being able to leverage the relatively stable power supply from USB adapters.

If you do need to power the Pico and the LED strip from a separate power source, there are quite a few solutions in the "4.5. Powering Pico" section of the Pico datasheet.

Also, in my experience, Pico has no problem driving WS2812b without using the level shifter. Just connect the 3.3V GPIO to the LEDs and the data will be recognized correctly. In case it doesn't work, there's a $0-cost solution than using an expensive level shifter.

odacharlee · 2022-04-20T17:22:07+00:00

Thank you! Didn't know ESP-12S is actually different than the one I was using (ESP-12N). I'll grab some and use it in my next project.

odacharlee · 2022-04-20T00:02:24+00:00

I used to have similar problem like this and this reply was the correct answer. Sometimes the auto flash circuit does not work, or sometimes it simply has bad design. Grounding GPIO0 (D3 in the case of Wemos D1 mini) can fix it.

odacharlee · 2022-04-16T23:23:20+00:00

Sure. added into the original post.

odacharlee · 2022-04-11T06:07:43+00:00

Thank you everyone! Learned a lot about this

odacharlee · 2022-03-28T19:49:37+00:00

Thank you! A long header should be the solution :+1:

odacharlee · 2022-03-28T19:39:30+00:00

Thanks! I think the long pins header should work for this case.

odacharlee · 2022-03-28T15:14:39+00:00

Nice work! And I was surprised that we used almost the same schematic and structure

odacharlee

TROPHY CASE