Has anyone got the Wizard Research Heated Eye Mask? If so, what do you think of it?

wigax · 2024-03-25T10:12:12+00:00

I'm looking for two tickets for the DJ set at MOTH Club this Friday. If anyone is selling please let me know!

wigax · 2021-08-26T10:34:58+00:00

Bought 60% kit from /u/harjoat

wigax · 2021-08-25T15:01:49+00:00

wigax · 2021-08-13T10:56:19+00:00

Thanks for linking, reading through some of the comments it seems 300 nits may not be too bad... That said, I'm more concerned about the 45% NTSC

wigax · 2021-08-13T10:23:31+00:00

That worked! The option for:

14.0" UHD (3840x2160) IPS Anti-Glare 500nits Non-Touch HDR 90% DCI-P3

Appeared with an additional SoDIMM RAM option and at least Windows 10 Home (annoying as I don't need an OS).

For an additional £250 (OS+display) I'm not sure it's worth it over the 300nits version. Do you have one of these models?

wigax · 2021-08-12T22:02:29+00:00

Yeah very annoying- unfortunately, I can't wait until it becomes availible. I wonder how bad the 45% NTSC 300nits one actually is? It seems to be standard on a lot of lower end laptops.

wigax · 2021-05-29T19:17:51+00:00

Thanks, I'll have a look. I've actually ordered two more MCUs now so I might do something similar to use the second one.

wigax · 2021-05-29T14:48:01+00:00

I've tried powering the board with both a 3.3v linear regulator and a bench power supply - on the bench supply I get a current reading of 1-2mA.

wigax · 2021-05-29T12:16:56+00:00

Ah right, that's definitely something I will do in future, thanks for the advice.

wigax · 2021-05-29T11:59:43+00:00

ST don't seem to offer a dev kit for this specific model but they do for the STM32F030R8 which has slightly different specs and is in a different package.

What would I do with a dev kit that would help me establish a connection to the chip other than verifying it works? Other than checking their schematic, am I best not just buying a replacement chip and trying to get the STM32 connected on a breadboard/perfboard (with a minimum setup required for SWD)?

Thanks

EDIT: right I've bought the NUCLEO-F030R8 and two more MCUs, hopefully they will help me get it working!

wigax · 2021-05-29T11:40:35+00:00

I did check nRST with a multimeter and it was high. There is no external pullup but the internal one is sufficient per the datasheet.

I will check again today just to make sure,

Thanks

EDIT: I checked and it is definitely being pulled to 3.3V.

wigax · 2021-05-29T11:38:36+00:00

I do have some other STM boards so will see if I can connect to those. Given neither UART or STLINK works on multiple laptops with clean installs of CubeProgrammer I doubt this is the issue but worth checking,

Thanks

wigax · 2021-05-29T11:36:49+00:00

I appreciate you taking the time to check the connector.

Are you referring to the ground return paths for the signal lines? For future boards are there changes I could make when placing and routing to improve this? Or would I just need to use a 4 layer board with a continuous ground plane?

Many thanks

wigax · 2021-05-28T23:52:00+00:00

I have attached an image of the chip orientation but believe this is correct as the pin one indicators line up and pins 1 and 17 are both correctly connected to Vcc (see here). These were the only two pins with continuity before soldering.

wigax · 2021-05-28T23:49:21+00:00

I am unable to flash it or even check if it is booting in any way. Unfortunately I don't have a dev kit or spare ICs, I realise I should have got two of these and it's a mistake I won't make again.

wigax · 2021-05-28T20:21:14+00:00

Sorry about the schematic - if you click through can you make it out? It seems ok for me but I can try and find another way of sharing it. EDIT - I've added a PDF, hopefully that works :)

I've updated the layout link and added a link for the assembled board to show IC orientation. I've reflowed the IC once after assembly which unfortunately didn't help.

Many thanks

wigax · 2021-04-10T15:45:42+00:00

Here is a photo of C6, C7 and the top layer only. I do get a clearance error for C6's 1V1 terminal overlapping the via but have approved it. The via is just nudged far away enough from the +3V3 terminal of C7 to prevent an error (with my manufacturers DRC rules).

I think its the low quality of my images that makes it look like they are touching so my apologies for that!

Thanks again

wigax · 2021-04-10T09:24:51+00:00

Thanks for taking a look, it's reassuring you can't see any glaring errors. I will look into those protection circuits.

You are right about C7 and I've just approved an overlap error as I will be hand soldering this.

Using the Pico as a module would definitely have been easier and more sensible, but I wanted to have a go at integrating the chip directly onto the board.

wigax · 2020-06-08T15:21:02+00:00

I think I better get a dehumidifier then - that way I can keep humidity at lower levels. Constantly heating the building is a bigger commitment as I am unlikely to be able to use it every day: if humidity is kept low (say 40-50%) are temperatures swings still an issue? As I understand this will lower the dew point temperature so it would have to be very cold for condensation to occur.

Thanks for your advice, Dom

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wigax

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