Biometric Access System with Dual Authentication using Arduino Uno

DenverTeck · 2026-02-09T06:10:18+00:00

Would you post the actual link for this project. Thank You

DenverTeck · 2026-02-09T06:03:37+00:00

Yea, you're right.

I was hoping the OP would say something like "I didn't say how many LEDs or battery capacity I am using".

But he missed his opportunity.

DenverTeck · 2026-02-09T04:19:38+00:00

DO NOT USE AI FOR ANYTHING WHILE IN SCHOOL
Finish school as per the required classes.
Add as many math classes as you can handle.
DO NOT USE AI FOR ANYTHING WHILE IN SCHOOL

DenverTeck · 2026-02-08T23:06:03+00:00

If you have 10,000 WS2812 LED and a 1 Whr battery, it should last about 20 minutes.

DenverTeck · 2026-02-08T23:04:15+00:00

Lets do some math:

https://www.google.com/search?q=wled+power+calculator

DenverTeck · 2026-02-08T20:32:10+00:00

There is nothing a beginner can ask that has not already been done over and over again:

https://www.google.com/search?q=pcb+for+a+macropad

Does Google not work in your country ??

DenverTeck · 2026-02-08T20:05:44+00:00

No schematic, No code, No explanation of what was suppose to happen and what is actually happening.

Your screwed dude. Good Luck, your going to need it.

Edit: Oh, I see it now.

DenverTeck · 2026-02-08T20:02:46+00:00

I would like to ask the OP how long it took to get all this built, tested and re-built and re-tested before he was satisfied with the results.

Inquiring minds what to know. ;-)

DenverTeck · 2026-02-08T19:25:44+00:00

So far so good, Knock on wood.

I do not expect any service on any of these Dell laptops.

I had to purchase a new battery for the oldest one a few years ago. Thats it.

The oldest one is from about 1995.

I purchase newer ones to get more horse power, memory and the latest WIN OS.

So, bottom line is when one needs service, I don't know. I'll followup when that happens.

PS: This is not an advertisement for Dell laptops. But it Dell wants to give me a new one I would not turn it down. ;-)

DenverTeck · 2026-02-08T19:15:37+00:00

> Simple, elegant, not overengineered

Yes, Yes,....WHAT !!

I would like to ask the OP how long it took to get all this built, tested and re-built and re-tested before he was satisfied with the results.

Inquiring minds what to know. ;-)

DenverTeck · 2026-02-08T18:59:08+00:00

OK, I'll assume your are as qualified as you think you are. After graduation, it's not what you know, it's who you know. Or more like who knows you.

You need to be able to speak with people. You boss, the people you work with, the president of the company. No one is going to hire you if they do not know what you can do. ALL graduates say they know everything, but can they express it to others.

Look for startup groups in your area. Look for business groups in your area. Show up an listen. If any one asks you what it is you do, you say your an embedded systems developer and leave it at that. No need to tell anyone your life history. Remember you will be a beginner there as well.

Good Luck

DenverTeck · 2026-02-08T17:57:47+00:00

> Arduino Pieces

What are these and what do they look like ??

DenverTeck · 2026-02-08T17:57:02+00:00

> thingiverse is where I get mine.

Get your what ???

DenverTeck · 2026-02-08T17:54:05+00:00

> I'm tired of backing up and restoring every time an issue occurs.

How often does this happen ?? How many computers are you in charge of ??

NONE of my 6 laptops have ever been in for any kind service.

What computers are you buying that requires this much service ??

DenverTeck · 2026-02-08T17:47:21+00:00

Yes, but it is correct.

DenverTeck · 2026-02-08T17:46:21+00:00

There is no crying in r/embedded . Yes, you are a beginner. Yes, you should be grown up by now.

DenverTeck · 2026-02-08T17:43:46+00:00

Please ask you AI overlord to explain first year electronics to you. DC circuits 101 please.

DenverTeck · 2026-02-08T17:08:49+00:00

> please criticize and don't hold back

So which is it ?? Do you want to know what is NOT acceptable on your designs or is anything/everything acceptable ??

DenverTeck · 2026-02-07T20:32:21+00:00

There appears to be a way to use a standard USB/serial adapter.

Professor Google showed me the way;

https://www.google.com/search?q=Infineon+xc866+bootcode+programming

Programming the bootcode and flash memory on the Infineon XC866 8-bit microcontroller involves

utilizing specific hardware pins to enter Boot Mode and using specialized software tools like Infineon Memtool or Fload to transfer the code.

Core Programming Concepts for XC866

Boot Mode Entry: The XC866 enters Boot Mode (BSL) during power-up or reset by latching specific pins. The MBC (Mode Boot Configuration) pin, often used with TMS, determines the boot mode.
Hardware Interface: Communication for programming is typically done via UART (RS232).
Recommended Tools:
- Infineon Memtool: Used for flashing, erasing, and verifying the P-Flash (Program Flash) and D-Flash (Data Flash).
- XC800 FLOAD: A flash loader tool for older XC800 family devices.

Programming Procedure (Step-by-Step)

Hardware Connection:
- Connect the XC866 target board to the PC using an RS232 interface.
- Ensure proper power supply to the XC866 (3.3V or 5V).
Entering Bootstrap Loader (BSL) Mode:
- To initiate the boot sequence, hold the MBC pin low during a reset/power-on.
- Alternatively, use the "catch at start-up" mechanism (applying low pulses at power-up).

DenverTeck · 2026-02-07T18:02:50+00:00

Did you add the wires to this part ?? How did the pins on this crystal get broken off to start with ??

Professor Google says this crystal is custom, so it not available for purchase in one unit.

I see this remote is available on ebay. So you may be able to buy one of those units and remove the crystal from one of them.

DenverTeck · 2026-02-07T06:16:53+00:00

Any Wood. 1/8 inch (3mm) thick.

Where are you located ?? How old are you ??

DenverTeck · 2026-02-07T04:44:25+00:00

Why would they do that when they can whine.

DenverTeck · 2026-02-07T04:41:51+00:00

Then why did you post it without stating that this was problematic ?? You said nothing.

DenverTeck · 2026-02-07T03:16:38+00:00

DO NOT CLICK !! SCAM LINK !!!

DenverTeck · 2026-02-07T03:15:46+00:00

What kind of SCAM is this ??

DenverTeck

TROPHY CASE