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Hi friends, I acquired a Rfid sketch to operate a relay and it works fine. I would appreciate very much, if you can help to modify this sketch so that it will close the relay as soon as the card is placed and stay that way until the card is removed, whereby the relay will open. Like the system that switches on the power in hotel rooms. my code is copied below. Thank you. Regards Samson. from Sri Lanka #include <SPI.h> #include <MFRC522.h> #define RST_PIN 9 // Reset pin for the MFRC522 #define SS_PIN 10 // Slave Select pin for the MFRC522 #define RELAY_PIN 7 // Pin to control the relay MFRC522 mfrc522(SS_PIN, RST_PIN); // Create MFRC522 instance // The UID we are looking for (Your card's UID) byte targetUID[] = {0x03, 0xA2, 0x1B, 0x96}; void setup() { Serial.begin(9600); // Start serial communication SPI.begin(); // Initialize SPI bus mfrc522.PCD_Init(); // Initialize MFRC522 RFID reader pinMode(RELAY_PIN, OUTPUT); // Set relay pin as output digitalWrite(RELAY_PIN, LOW); // Start with relay off Serial.println("Place your RFID card near the reader..."); } void loop() { if (mfrc522.PICC_IsNewCardPresent()) { // Check if a new card is presented if (mfrc522.PICC_ReadCardSerial()) { // If the card is valid Serial.print("UID: "); // Print the UID of the card for (byte i = 0; i < mfrc522.uid.size; i++) { Serial.print(mfrc522.uid.uidByte[i], HEX); Serial.print(" "); } Serial.println(); // Check if the card's UID matches the target UID if (checkUID(mfrc522.uid.uidByte, targetUID)) { Serial.println("Card matched! Closing relay..."); digitalWrite(RELAY_PIN, HIGH); // Activate relay delay(5000); // Keep relay closed for 5 seconds digitalWrite(RELAY_PIN, LOW); // Deactivate relay } else { Serial.println("Card not recognized."); } } } } // Function to check if the UID matches the target bool checkUID(byte* cardUID, byte* targetUID) { for (byte i = 0; i < 4; i++) { if (cardUID[i] != targetUID[i]) { return false; } } return true; }

Hello all, A while back, I purchased one of the Aneng M109 talking multimeters. I believe it was from a recommendation on this group. I'm trying to figure out how to attach the accessory cables to the meter. Right now, the meter has two test leads with a probe on one end. The meter comes with a cable with threaded ends where you can attach the other included alegator clips, smaller probes, etc. I can't figure out how to attach that threaded cable to the meter. The standard test leads have plugs that fit into jacks on the meter. The threaded cable doesn't fit. I've read that I need to remove the standard plug inserts so I can screw the other cable in, but I can't figure out how to do that. Sorry for the newbie question. I'm sure I'm missing something obvious. Thanks!

Hello, I rejoined the group after a long absence and wanted to catch up with the latest combination of development tools for Arduino I used Visual Studio with Visual Micro in the past and had moderate success, now I’m trying again, but there are still many obstacles In the old Blind Arduino Forum Joshua explained in great detail how to use Notepad++ with the Arduino IDE, but this doesn’t seem to work with the newer versions Can someone tell me what tools are accessible currently? Thanks, John Pocs

Dear Blind Arduino Community: I’m going to be doing a great deal of traveling this fall and will not be available to support our monthly meetups. Starting this month, our regular meetings on the third Saturday of the month are temporarily suspended. Things will probably start up again in January. The meetups are on hold, but we’re still working hard on a web site and online tutorials. As those develop, we will let you know via this list. There are also likely to be one or two special events to be announced as they coalesce . For now, I wish you all a wonderful autumn and look forward to hearing from you online or crossing paths again in the spring. All my best! --JAM

Hey folks, I just wanted to share a fun project I've been designing. The BrailleBit is a simple 3D printed single character Braille display. If you can get the 3D printed parts, you can assemble one in 5 minutes and add Braille output to your projects. More info including physical descriptions, printable model files, and Arduino code can be found here: https://github.com/tdeck/BrailleBit If you want to tinker with it and have an Arduino but no 3D printer, I'd be happy to send you one (while my supplies last). Or you may be affiliated with an institution that can print these for you. Currently it displays only a small set of characters (basically number characters) only but I'm working on the mechanical challenges of supporting a larger character set.

Folks: This is less an invitation and more a communication, especially as it’s coming rather late for our meeting tomorrow. Rather than have our regular Blind Arduino meet up at the East Bay Center this month, the group working on the web site will gather and discuss progress and next steps – 2928 Adeline St in Berkeley. Of course, if you’re interested in helping with the web site, you’re welcome to come, but we won’t be focusing on the regular hands-on hardware activities this time. Nevertheless, there will be snacks and interesting talk about web site design, accessible WordPress management, and related topics. I know it’s not as exciting as soldering and making things beep and move, but it’s something we need to do, and this is our regular time to get together and make stuff happen, so that’s what we’re doing. Stay tuned for more information about what’s happening this fall in Blind Arduino Land. Best! --JAM

Dear Blind Arduino Community: This is a last-minute note to remind you that we will gather on Saturday, July 20, 1:00-4:00, at 2928 Adeline St in Berkeley – the East Bay Center for the Blind. This month we continue our design and development of the Blind Arduino web site. If you’re interested in helping us plan and build the new web site, please join us to talk about accessible WordPress, what content belongs on our site, how to organize it, and related topics. While we’re at it, we will also talk about how to render output from an Arduino project into a web site, including those built on WordPress. This is another great way to produce accessible output, and even input, from an Arduino project. Come one, come all – Hang out with us, learn from us, teach us. Blind or sighted, advanced or beginner, come check out the Bay Area Blind Arduino Monthly Meetup (BABAMM)! Best! --JAM

Dear BABAMMers: This Saturday, June 15, we will gather between 1:00-4:00 at the East Bay Center for the Blind -- 2928 Adeline St in Berkeley, easy walking distance from Ashby BART. Bring your laptops, your braille displays, your projects, or none of the above. We invite everyone -- blind or sighted, advanced or beginner, student or volunteer -- to come learn or teach. Come to build or share your knowledge of non-visual coding, hardware, design, and experience. If you're new, no invitation or experience is necessary. We're a welcoming group of accessibility hackers encouraging you to join us to learn and teach about how to build blind-inclusive digital tools. No question, topic, or project is too big or too small -- come tell us about it, get feedback and advice, offer ideas, and learn how blind people build and collaborate to solve real-world problems. We promise interesting conversation, tasty snacks, and cool toys, all happening this Saturday at the East Bay Center for the Blind. This month offers two special features. In addition to an exciting introduction to Arduino interrupts (a relatively technical topic that we will make fun and understandable), we will have an important community discussion to identify the kinds of events and topics we should hold over the next 12 months. If you're interested in helping guide us to topics of particular interest to you, or if you are curious about how to use interrupts, you won't want to miss this meeting! Hope you can come! --JAM

I've started a website at blindmakers.net to collect advice and resources for Blind people getting into electronics, 3d printing, and hopefully other "maker" hobbies. Today this knowledge is scattered in different forum posts, research papers, and small websites that aren't easy to find, so the "v0" is very basic design wise, and mostly a collection of links I've found when combing the internet. The plan is to make it more useful in the future. Blind people should be able to self-teach these hobbies from anywhere in the world, just like sighted people do today. About me: I'm a professional software engineer and electronics + 3D printing hobbyist living in Seattle. I'm legally blind (ocular albino) but I rely on sight to do most things. I've always been interested in accessible technology and have a few software and hardware projects in the works that might be interesting to this group once they're more fully developed. I'd also like to connect with other folks in the community and offer help when I'm able. Let me know what you think. Any feedback would be much appreciated.

Folks: Once again I need to cancel. I"m traveling this weekend and couldn't conscript an alternate host for this month's Blind Arduino meetup which was to be held on Saturday, May 18. I recognize that cancellations have been frequent recently and I apologize for this. I'm doing some reorganization of my schedule in the next month that should help make the meetups more reliable. In the meantime, thank you for your patience and commitment to this awesome community. I hope to connect with many of you next month on June 15, the third Saturday of the month, at 1:00 at the East Bay Center for the Blind when we will once again gather for the Bay Area Blind Arduino Monthly Meetup. With great appreciation, --JAM

It can be hard to look up pin assignments for chips and other components because most often the parts are described with an image of the package outline and all the pin locations. I'm working on a project to automatically generate accessible component pinouts and I'd love feedback (even "this isn't useful" is good for me to know so I can focus on other things). Do the spatial descriptions make sense? Does the format work well with your screen reader? Here's a single example for an AVR microcontroller: https://blindmakers.net/pinouts/attiny2313-20p_dip/ Here's a list of the descriptions I've generated: https://blindmakers.net/pinouts/ They are based on a script I wrote that parses the component library used by KiCAD, an open-source circuit design program. I extracted the part number, package type (e.g. DIP, TO-92, etc...) and pin names. Then I wrote some descriptions for how pins are numbered on different types of packages and how to orient them by touch. Right now it only includes the most common through-hole package types that most of us are likely to use in hobbyist projects. If it's worthwhile I can write up descriptions for common SMD packages as well. P.S. My reply to the earlier thread doesn't seem to have made it to the group - I guess because I'm a new user and my posts need to be approved. So please excuse any unusual delays in my replies to this thread as well.

Dear Friends of Blind Arduino: Unfortunately, schedules have conspired such that neither Eleanor nor I can host the Blind Arduino gathering this month. We will not meet this Saturday, but look forward to reconvening next month at the usual time and place -- the third Saturday of the month at the East Bay Center for the Blind. Thanks for being part of the community and for your patience with the late notice. Enjoy the spring time!! --JAM

Dear BABAMMers: The third Saturday of the month comes early this March. This Saturday, March 16, we will gather between 1:00-4:00 at the East Bay Center for the Blind -- 2928 Adeline St in Berkeley, easy walking distance from Ashby BART. Along with our usual activities, we will spend some time discussing oscilloscopes -- what they represent, how they work, and (perhaps most interestingly) how we make them accessible. Come learn and think about accessible oscilloscopes of the past, present, and future, and why they're interesting and important. We might also build some prototypes, talk about other projects, or help you fix your broken toaster. Bring your laptops, your braille displays, your projects, or none of the above. We invite everyone -- blind or sighted, advanced or beginner, student or volunteer -- to come learn or teach. Come to build or share your knowledge of non-visual coding, hardware, design, and experience. If you're new, no invitation or experience is necessary. We're a welcoming group of accessibility hackers encouraging you to join us to learn and teach about how to build blind-inclusive digital tools. No question, topic, or project is too big or too small -- come tell us about it, get feedback and advice, offer ideas, and learn how blind people build and collaborate to solve real-world problems. We promise interesting conversation, tasty snacks, and cool toys, all happening this Saturday at the East Bay Center for the Blind. Hope you can come! --JAM

Dear BABAMMers: Hope you've all been well and that your 2024 is off to a great start. Coming up is the third Saturday of the month. As usual, we will gather for our Blind Arduino meet up starting at 1:00 at the East Bay Center for the Blind -- 2928 Adeline St in Berkeley, walking distance from the Ashby BART station. I've been doing a lot of traveling and a million thanks to Eleanor for doing an amazing job keeping the meetups going these last few months. I'm delighted to be back this Saturday to reconnect and find out what everyone has been building and learning. As usual, we invite everyone -- blind or sighted, beginner or advanced, student or volunteer -- to come learn or teach. Come to build or share your knowledge of non-visual coding, hardware, design, and experience. If you're new, we're a welcoming group of accessibility hackers encouraging you to join us to learn and teach about how to build blind-inclusive digital tools. No question, topic, or project is too big or too small -- come tell us about it, get feedback and advice, offer ideas, and learn how blind people build and collaborate to solve real-world problems. And if you've been away for a while, please come back -- we miss you! We promise great company, fun conversation, tasty snacks, and cool toys, all happening this Saturday at the East Bay Center for the Blind. Can't wait -- hope you can come! Please write me off list if you have any questions. --JAM

Happy New Year BABAMMers, We will not be meeting this saturday the 20th of January, as several travel conflicts have arisen. We appreciate your understanding and are looking forward to next month's meetup! Best, Eleanor -- Eleanor Mayes (She/Her/Hers) MDes, University of California Berkeley, FA22 M.S. Materials Science & Engineering, UMN '21 B.S. Chemistry, University of Chicago '18 (610)-999-0242 I live and work in the unceded lands of the Xu?yun (Huichin); the home territory of the Chochenyo-speaking Ohlone people. I pay my respects to the original caregivers of these lands and recognize that the Muwekma Ohlone people are alive and flourishing members of the Berkeley and broader Bay Area communities today. This was and always will be Indigenous land.

Dear BABAMM-ers: Please join me this Saturday, November 18th, from 1:00-4:00 PM at the East Bay Center for the Blind, 2928 Adeline Street in Berkeley, for this month's Bay Area Blind Arduino Monthly Meetup (BABAMM)! Bring your laptops, your projects, your broken devices, and your curiosity. We will spend the afternoon teaching and learning about electronics, programming, mechanics, and how blind people can independently design and build accessible devices. I will be introducing arduino Libraries, which are great tools for expanding the capabilities of your arduino code and scripts, and specifically demo-ing the Talkie library which can be used for text-to-speech applications. Come build with us; snacks and good company are guaranteed and all are welcome, regardless of level of experience or level of vision! Looking forward to spending the afternoon with everyone, Best, Eleanor-- Eleanor Mayes (She/Her/Hers) MDes, University of California Berkeley, FA22 M.S. Materials Science & Engineering, UMN '21 B.S. Chemistry, University of Chicago '18 (610)-999-0242 I live and work in the unceded lands of the Xu?yun (Huichin); the home territory of the Chochenyo-speaking Ohlone people. I pay my respects to the original caregivers of these lands and recognize that the Muwekma Ohlone people are alive and flourishing members of the Berkeley and broader Bay Area communities today. This was and always will be Indigenous land.

Dear BABAMM-ers: Please join me this Saturday, October 21st, from 1:00-4:00 PM at the East Bay Center for the Blind, 2928 Adeline Street in Berkeley, for this month's Bay Area Blind Arduino Monthly Meetup (BABAMM)! Bring your laptops, your projects, your broken devices, and your curiosity. We will spend the afternoon teaching and learning about electronics, programming, mechanics, and how blind people can independently design and build accessible devices. I will also be demonstrating a Halloween-themed Arduino build, which we can attempt to replicate and modify to play your spooky song of choice! Come build with us; snacks and good company are guaranteed and all are welcome, regardless of level of experience or level of vision! Looking forward to spending the afternoon with everyone, Best, Eleanor -- Eleanor Mayes (She/Her/Hers) MDes, University of California Berkeley, FA22 M.S. Materials Science & Engineering, UMN '21 B.S. Chemistry, University of Chicago '18 (610)-999-0242 I live and work in the unceded lands of the Xu?yun (Huichin); the home territory of the Chochenyo-speaking Ohlone people. I pay my respects to the original caregivers of these lands and recognize that the Muwekma Ohlone people are alive and flourishing members of the Berkeley and broader Bay Area communities today. This was and always will be Indigenous land.

Dear BABAMM-ers: Please join us tomorrow, Saturday, September 23, from 1:00-4:00 PM at the East Bay Center for the Blind, 2928 Adeline Street in Berkeley, for this month's Bay Area Blind Arduino Monthly Meetup (BABAMM)! Bring your laptops, your projects, your broken devices, and your curiosity. We will spend the afternoon teaching and learning about electronics, programming, mechanics, and how blind people can independently design and build accessible devices for ourselves. We will also be displaying and discussing a new inexpensive tool -- the ANENG M109 talking multimeter. Please come build stuff with us, enjoy the company, the conversation, and the snacks. Everyone is welcome, regardless of level of experience or level of vision! Looking forward to catching up with you all tomorrow! --JAM

Dear BABAMM-ers: This month we're shifting our schedule a little to accommodate religious holidays. Instead of the Third Saturday, we will be meeting on the fourth Saturday, September 23, from 1:00-4:00PM at the East Bay Center for the Blind -- 2928 Adeline St in Berkeley. We welcome everyone, regardless of level of vision, or level of experience with electronics, robotics, or coding. We are a welcoming bunch of enthusiastic makers, eager to teach and learn non-visual techniques for hands-on making of cool, accessible gadgets using microprocessors and other modern toys. This is an opportunity for both blind and sighted makers to learn techniques for building and using devices without vision. Bring your projects, your questions, and even your broken devices. We will collectively try to help everyone move forward building on the experience you have and the goals you set. We have fun,, we have great conversations about accessible design, and we have snacks! Come build your devices and skills in a welcoming and enthusiastically friendly environment of inclusion at the East Bay Center! Once again, it's not this Saturday, but next Saturday, 9/23. Looking forward to spending the afternoon with you then! --JAM

Dear BABAMMers: August is a month of travel, a month of getting ready to return to the grind of school, a month of extreme northern-hemisphere heat, and a month to work on your blind Arduino projects at home. We're taking August off from our in-person BABAMM schedule. Use the time to think about the projects you'd like to build this fall when we reconnect for more in-person Blind Arduino gatherings. Wishing you a fabulous remainder of your summer and looking forward to seeing you at the East Bay Center for the Blind in September! --JAM