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Re: RFID in classroom AV system
¿ªÔÆÌåÓýI¡¯m using HID Prox (specifically MultiClass SE readers and generally iClass SE credentials) for access control at home ¨C ESP8266s running Arduino code handle the Weigand-to-Crestron conversion because OSDP (over RS485) is problematic for me (primarily because I¡¯m cheap, but the OSDP I¡¯ve played with has tighter polling requirements than I¡¯m able to achieve without making things grumpy). ? If you¡¯re pretty much anywhere in the US that already uses a card access control system there¡¯s a very good chance it¡¯s using a HID prox technology already ¨C either 125 KHz or 13.5 MHz ¨C and generally (except for certain Corporate 1000 custom encryption keys on the 13.5 MHz iClass side of things and some ancient Motorola Indlala-based systems) a MultiClass reader is be able to read any access token in common circulation (Outside the US there are some other formats like EM4200 that MultiClass readers can read ¨C but also some that they can¡¯t) ? The bigger challenge if you¡¯re looking to reuse an existing credential is managing expiration/loss/reissuance expectations so if this is at scale you may be better off looking at integrating with the access control system (either via API or doing slightly ugly things like treating the room like an elevator where every user unlocks different ¡°floors¡± (capabilities/presets)) so that (a) you don¡¯t have to put yourself in the actual card transaction and (b) when their card is reissued (because it was lost or expired) you don¡¯t have to worry about updating the token ID on your side of things ¨C it just works (or stops working, if the card was disabled) ? If you¡¯re living in a HID 125 KHz world, HID has a 54xx series reader that outputs RS232 over one way serial. It¡¯s pretty limited (no control over the beeper or LED, just spits out the card ID that it read with a line feed IIRC. (But 125KHz is also slowly dying off for institutional use because it in its most common form it is insecure as it allows for a fairly small cardholder population) ? If you¡¯re not worried about matching an existing credential ¨C there are a plethora of EM4200 readers that output RS232 but I don¡¯t have any that I would recommend and there are the same small universe issues that make it less appealing for a new install. ? Lincoln ? -- Lincoln King-Cliby Commercial Market Director ? From: [email protected] <[email protected]> On Behalf Of
tommym via groups.io
Sent: Wednesday, April 17, 2024 11:34 AM To: [email protected] Subject: [crestron] RFID in classroom AV system ? Hello, |
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smpl+ help with making a code to reverse string
hello,
i need some advice how to do in smpl + a code to reverse a full string of my keybourd . what i have done so far is : /*
? DIGITAL, ANALOG and SERIAL INPUTS and OUTPUTS
? (Uncomment and declare inputs and outputs as needed)
*/
// DIGITAL_INPUT?
// ANALOG_INPUT?
STRING_INPUT Key_input$[1024];
DIGITAL_INPUT Clear,Back;
?
/*
? Global Variables
? (Uncomment and declare global variables as needed)
? Note:? Be sure to initialize all declared STRING variables as needed
? ? ? ? ?For example, in Function Main: myString = "";
*/
// INTEGER
// LONG_INTEGER
// SIGNED_INTEGER
// SIGNED_LONG_INTEGER
STRING Internal_buffer[1024];
//STRING originalString[255] = "Hello, world!";
STRING reversedString[1024],DESTINATION_STRING[1024];
?INTEGER i,stringLength;
String_Function ReverseString(string SOURCE_STRING)
{
? ??
? ? ? ? stringLength = LEN(SOURCE_STRING);
? ? // Start from the end of the string and copy characters to reversedString in reverse order
? ? FOR(i = 0 to i < stringLength step 1)
? ? {
? ? ? ? reversedString[i] = SOURCE_STRING[stringLength - i - 1];
? ? }
? ? reversedString[stringLength] = ""; // Null-terminate the reversed string
?
? ? ?RETURN (reversedString);
}
CHANGE Key_input$
{
? ?// reversedString = ReverseString(Internal_buffer);
?
Internal_buffer = Key_input$ + Internal_buffer;
reversedString = ReverseString(Internal_buffer);
?
Key_shifted$ = reversedString;
}
?
?
PUSH Clear
{
Internal_buffer = "";
}
?
PUSH Back
{
if(len(Key_input$) < 0)
{
Key_shifted$ = right(Key_input$, len(Key_input$) - 1);
}
}
?
?
?
?
? /*
PUSH Back
{
if(len(TextIn$) < 0)
{
Text$ = left(TextIn$, len(TextIn$) - 1);
}
}
/*
? Main()
? Uncomment and place one-time startup code here
? (This code will get called when the system starts up)
*/
/*
Function Main()
{
? ? // TODO:? Add code here
? ? // Initialize declared global and local variables/arrays as needed.
?
? ? // WaitForInitializationComplete();
? ? // If you are reading any Input or Output variables, uncomment
? ? //? ?the WaitForInitializationComplete statement above and read
? ? //? ?them afterwards.? Input/Output variables will not have
? ? //? ?their correct values set until after the logic processor
? ? //? ?runs and propagates the values to them.
}
*/
i get erors that the function is missing ; here:? FOR(i = 0 to i < stringLength step 1)
? ? {
line missing ; ===? ? ? ? reversedString[i] = SOURCE_STRING[stringLength - i - 1]; //something i am doing with the array is porbaly not good
? ? }
?line missing ; ===? ???? reversedString[stringLength] = ""; // Null-terminate the reversed string
can someone help ,or give direction what is wrong? ? |
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Re: RFID in classroom AV system
Yeah you can get them at DangerousThings.com It¡¯s sort of like a piercing and sort of like a pet chip for dogs/cats but injected into your hand. ?readable by commercially available RFID readers Hurts like hell for 5 seconds to get put in As an integrator you can do neat wizardly stuff with it.? That¡¯s sort of how I got into messing with the Arduinos, they will convert the signal from most any RFID reader to any format you want (relay closure, rs232/485, you name it), so, every size and shape of reader is an option.? Embed mini readers in furniture to unlock the drawers, put standard RFID readers on doors, or (Crestron example) bury a reader in the wall under a touchscreen that skips you past a passcode or into a hidden menu.? Mike On Thu, Apr 18, 2024 at 6:28?AM johnh via <johnh=[email protected]> wrote: Wait you have a chip embedded in your hand??? |
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Re: RFID in classroom AV system
I can help with this.? First, do you know what kind of RFID card or token is going to be used?? (Is it an existing badge that users already carry, or one where you will be passing cards or tokens out -- such as "one per preset" and... you can select the card technology)?? (if you can select the technology, you might be aware that cards come in multiple formats, including keyfobs, stickers, coin-shaped discs, or other objects, if that helps your use case)
Second, what kind of reader will be used?? Do you get to select it, or do you have to work with something that exists?? If you select it, what's the desired physical format (e.g. a wall mount similar to what you see on doors? a device that sits on a desktop?? something hidden behind another surface?? how compact would you like it?) As for how it's going to talk to Crestron, you can assume the RFID can be made to send a string to a Crestron serial port (simplest), or a TCP/UDP port (less simple since there will be a network conversion step involved).? Will you be able to work with that on the Crestron side? For what it's worth, I have an RFID chip embedded in my hand, and love making awesome integrations with it, including with Crestron.? There's lots of options! |
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Re: Weather processor V1.6
¿ªÔÆÌåÓýHI Dave; ? It was clickable in the original post.? However, it is not clickable in this reply.? After you made the change, it remains clickable in the reply. ? From: <[email protected]> on behalf of "Dave H - Crestron True Blue Tech Support Engineer Since 2014 via groups.io" <dhollander@...> ? The 4Ser/3Ser processor needs internet access to reach the weather service using HTTPS. |
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Re: Weather processor V1.6
The 4Ser/3Ser processor needs internet access to reach the weather service using HTTPS. |
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Re: RFID in classroom AV system
¿ªÔÆÌåÓýI haven't done anything with RFID.? However, I played around with
reading NFC tags using a smart phone and tying that into a
Crestron system.? You might be able to create something where the
professors phone does a unique http call into a crestron processor
based on the NFC tag in a specific classroom.? You can see the article I wrote on NFC tags here: Hope this helps Jay On 4/17/2024 9:33 AM, tommym via
groups.io wrote:
Hello, |
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Roku APP IDs for YouTube vs YouTubeTV
Short story is that I have a client that runs the same interface in 2 different homes.? He sent me a message that the YouTubeTV button on the project that we are currently at.? Was now going to youtube vs TV.? this project has Express 4K units.? So I query the apps and to my surprise, the roku only returned info for installed apps.? There is a new ID for YouTube TV for units that have updated.? I check the other property, which has new Ultras recently installed and the query returns everything.??
YT = 837 YTTV = 195316 |
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RFID in classroom AV system
Hello,
I was wondering if anyone out there in the ether has experimented with using say an RFID card that recalls Crestron system presents? Trying to see how simple I can make the process for a professor. Allowing them to scan a card that pulls their usual setup so they have basically nothing to think of besides their lecture. Of course we would still employ some adjustments for if there is a simple change here and there. But mainly just spitballing ideas for now. Thank you All |
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Com1 Tx from Pro4 Stops Sending
Controlling Cisco Room Kit Pro with com 1 serial port at 115200 baud from Pro4. Went back next day, Cisco not receiving tx from Pro4 but Pro 4 still receiving rx from codec. Debugger shows tx being sent. However, connecting com1 tx to rx with a shorting jumper indicates nothing is coming out of the com1 tx (rx remains empty when a tx signal is sent in debugger). Simply rebooting the Pro4 fixes the issue.
The Pro4 is running firmware 2.8.003.00049 (12/19/23). I see a newer version (2.8.003.00049 03/27/2024) is available but have not had a window to try the update.? Anyone else see this before and can provide insight? Thanks in advance. |
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Topics in Home Automation - New Article in Residential Tech Today
¿ªÔÆÌåÓýAiDot manufactures a wide selection of smart
home products including smart light bulbs, plugs, dimmers,
switches, and more.? Their focus is to build smart home products
that connect with devices from other brands, across other
ecosystems.? They have now embraced the Matter protocol and, for
example, have sold 130,000 Matter-certified light bulbs which were
activated by more than 50,000 users.? According to Chris LaPr¨¦, Head of
Technology, Connectivity Standards Alliance, "AiDot, a dedicated
member of the Connectivity Standards Alliance, epitomizes
innovation. By embracing Matter 1.2 right from release, they're
shaping the future with advanced and first-in-class devices.
With thrilling new developments ahead, AiDot is revolutionizing
connected living. They are advancing the future of smart homes
alongside the Alliance." This article looks at AiDot's Matter
compatible products, including the world's first Matter v1.2
compatible air purifier. You can find the article here: For those interested in earlier articles that
I've written, you can find those here: |
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Re: Topics in Home Automation - New Article in Residential Tech Today
¿ªÔÆÌåÓýThe SwitchBot API goes through a cloud service so it doesn't work
without an Internet connection.? However, Matter may be a
different story.? I have asked SwitchBot whether a SwitchBot
device that is bridged to Matter through the SwitchBot Hub 2 can
be controlled through Matter when the home's Internet connection
is down.? I just asked that question a few hours ago and I'm
waiting on the response.? I expect that my contact at SwitchBot is
going to have to bump that up to the developers so it may take a
few days to hear back. Natively, the Hubitat doesn't include support for Matter devices that are brought into the Matter ecosystem through a bridged device like the SwitchBot Hub 2.? However, there is a community development project that added that capability to the Hubitat.? I just haven't had a chance to test it yet myself.? Information on that project can be found here: I'll let you know what I hear back from SwitchBot. Thanks Jay On 4/16/2024 7:30 PM, ZS via groups.io
wrote:
Is it working directly with hubitat or is another hub required? Would it work with no internet? |
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Topics in Home Automation - New Article in Residential Tech Today
SwitchBot has been in business since 2016 with a focus on offering products that make the existing items in your home smart.? They have become a leading smart home brand and have announced a major update to their Matter compatibility through a firmware update to the SwitchBot Hub M2.
My latest article, "SwitchBot Hub 2 Firmware Update Expands Matter Support¡± looks in detail of the new features SwitchBot has added. You can find the article here: For those interested in earlier articles that I've written, you can find those here: Finally, for those that want to see even more content I've written about smart home technology you can find that here: Thanks |
Dave H - Crestron True Blue Tech Support Engineer Since 2014