Re: [neonixie-l] USB connector shield

> On Feb 22, 2021, at 5:51 PM, newxito wrote: > > My pc also has a lot of cores and threads but only 100% CPU usage... I think > I should switch to Mac :-) Another reason: data rates are auto-ranging. They change magnitude so you don't have to figure out what The 2020 iMac goes up to

Re: [neonixie-l] USB connector shield

> On Feb 20, 2021, at 5:49 PM, newxito > wrote: > > I will put the board into a 3D printed case and that’s it. Since, > surprisingly, everything works as expected, there will be no revision 2... > but maybe an IN-13 version... I'd like to have a 4.5 digit version.

Re: [neonixie-l] USB connector shield

It’s nice to see nixies being used for something other than clocks! On Saturday, February 20, 2021 at 5:49:21 PM UTC-5 newxito wrote: > The little project is now working. It’s not the most exciting gadget of > the world but at least I learned something about USB connectivity. > When the PC

Re: [neonixie-l] USB connector shield

Very neat! Glad you got it all working. Jon. On Saturday, February 20, 2021 at 10:49:21 PM UTC newxito wrote: > The little project is now working. It’s not the most exciting gadget of > the world but at least I learned something about USB connectivity. > When the PC goes to sleep or is turned

Re: [neonixie-l] USB connector shield

So far it looks promising. I soldered the connector and the IC with the input protection components and then connected the board to the PC. The PC sees the device as COM port and I was able to reprogram the chip (FT_Prog utility) so that it negotiates 500mA. Jon schrieb am Mittwoch, 17.

Re: [neonixie-l] USB connector shield

You piqued my interest as to how the FT230X managed this point... From a quick read of the datasheet, it looks like that by default the chip tells the USB bus that it's in a bus-powered device that only needs 90mA. The datasheet is short of detail, but the implication is that you can change

Re: [neonixie-l] USB connector shield

Nice clock! In my circuit, the USB data lines are not connected to the MCU. Actually, I expect that the negotiation will be done by the FT230X (USB to basic UART IC), maybe I’m wrong. When plugged in, the device should only consume a few mA, I will delay powering on the nixies. For the HV, I

Re: [neonixie-l] USB connector shield

Thanks a lot for the information! There seems to be a lot of room for improvement for rev 2… The PCB should arrive this week, I will make some tests before connecting this thing to the pc. SWISSNIXIE - Jonathan F. schrieb am Dienstag, 16. Februar 2021 um 23:30:28 UTC+1: > First of all,

Re: [neonixie-l] USB connector shield

First of all, grounding - or - how to connect the shield, is not really specified, and usually you should consider the chip's datasheet / application notes on how to do it. For example, see the TUSB4020BI

Re: [neonixie-l] USB connector shield

The PC should see the board as a COMx connected over USB, so the software (C#/.NET) just has to send some WMI data (CPU load %, Disk usage %, …) to the serial interface… sounds easy :-) The software should be a service, so the data can be sent even when nobody is logged in. And I would like to

Re: [neonixie-l] USB connector shield

Never underestimate firmware ;) On Mon, Feb 8, 2021 at 3:18 PM newxito wrote: > Thanks Paul, I added another 0805 for the cap and the PCB is now in > production. Time to start writing the software for the pc side, that > shouldn't be too hard. > >> > -- > You received this message because you

Re: [neonixie-l] USB connector shield

Thanks Paul, I added another 0805 for the cap and the PCB is now in production. Time to start writing the software for the pc side, that shouldn't be too hard. > -- You received this message because you are subscribed to the Google Groups "neonixie-l" group. To unsubscribe from this group

Re: [neonixie-l] USB connector shield

The link in that stack exchange article is ok. Here is a current one. So my 100pF cap doesn’t agree with their 4700pF... https://www.cypress.com/file/88486/download On Monday, February 8, 2021 at 8:03:41 AM UTC-5 Paul Andrews wrote: > Here is a discussion. Looks like the cypress datasheet is

Re: [neonixie-l] USB connector shield

Here is a discussion. Looks like the cypress datasheet is probably the origin https://electronics.stackexchange.com/questions/4515/how-to-connect-usb-connector-shield On Monday, February 8, 2021 at 7:55:07 AM UTC-5 Paul Andrews wrote: > Some datasheet I read a long time ago had a 1M resistor

Re: [neonixie-l] USB connector shield

Some datasheet I read a long time ago had a 1M resistor in series with a 100pF capacitor between shield and signal ground. That is what I have used ever since as it was the first unequivocal statement on it that I had ever seen, before or since. See this schematic as an an example

Re: [neonixie-l] USB connector shield

That's a good point, but it I think it is ok because the connector I'm using is a 614105150721. According to the datasheet it should be a vertical micro-B USB connector M1 schrieb am Montag, 8. Februar 2021 um 02:26:57 UTC+1: > I don’t know, but thought I might point out that it appears you

Re: [neonixie-l] USB connector shield

The shield has a function of handling a static discharge when the plug is attached or the board is touched. A conductive ring around the edge of the PCB connected to the shield will prevent blowing out the electronics when that spark occurs. A resistor from shield to signal ground is reasonable.

Re: [neonixie-l] USB connector shield

t; >> >> >> *From:* neoni...@googlegroups.com *On Behalf >> Of *newxito >> *Sent:* Sunday, February 7, 2021 4:54 PM >> *To:* neonixie-l >> *Subject:* [neonixie-l] USB connector shield >> >> >> >> I'm trying to make a CPU

Re: [neonixie-l] USB connector shield

> do that though. > > > > Michail Wilson > > 206-920-6312 <(206)%20920-6312> > > > > *From:* neoni...@googlegroups.com *On Behalf > Of *newxito > *Sent:* Sunday, February 7, 2021 4:54 PM > *To:* neonixie-l > *Subject:* [neonixie-l] USB connec

RE: [neonixie-l] USB connector shield

To: neonixie-l Subject: [neonixie-l] USB connector shield I'm trying to make a CPU load indicator with 3 IN-12. This is my first project using USB power and data from a PC I'm not sure about the shield of the USB connector, Google is a little bit confusing about this point... Basically I found 3

[neonixie-l] USB connector shield

I'm trying to make a CPU load indicator with 3 IN-12. This is my first project using USB power and data from a PC I'm not sure about the shield of the USB connector, Google is a little bit confusing about this point... Basically I found 3 different opinions: 1. Do not ground the shield 2.