Numbers which use three times as many digits in base 2 as in base 10. Also, it was just enclosed in a cardboard box, and the antennae was a simple piece of wire. Try replacing this module. By clicking “Post Your Answer”, you agree to our terms of service, privacy policy and cookie policy. I'm pretty sure you can't put filter capacitors over i2c lines, and there are already filter capacitors on the power and ground lines. Anyway, after about 6 months of it being operational, it mysteriously died. I used it's i2c mode of communication and had filter capacitors at the power lines. Amazingly, I plugged it in and it worked. This lead to all of the problems I had. Anyway, what could have killed my FM transmitter and what should I do to keep it from happening when I order a new one? If that is the case, the look very carefully at how it is powered and make sure no spikes from the 12 V line make it to the 5 V line thru your USB adapter. There is no way to get the module to "return" data over i2c as far as I can see. Why is betareg() giving "invalid dependent variable" error? Georgia doing "hand recount" of 2020 Presidential Election Ballots. Why do these angles look weird in my logo? I made a little FM transmitter project a few months ago. Actually all IIC devices "return" data. I tried to test the solder joints with a multimeter, but it's hard to be conclusive with it being such a small SMD part, I have one more update now. Honestly, I'm not for sure if the FM transmitter component died, but I don't really have any way to test if it's working without it broadcasting. How to reject a postdoc offer a few days after accepting it? Podcast 285: Turning your coding career into an RPG, Creating new Help Center documents for Review queues: Project overview, Feature Preview: New Review Suspensions Mod UX. rev 2020.11.11.37991, The best answers are voted up and rise to the top, Electrical Engineering Stack Exchange works best with JavaScript enabled, Start here for a quick overview of the site, Detailed answers to any questions you might have, Discuss the workings and policies of this site, Learn more about Stack Overflow the company, Learn more about hiring developers or posting ads with us, Also see my update which is quite mind boggling. Just how much rope have different crewed missions been given? Many factors may contribute to this problem. (I also have XM, Tunein, Slacker, and a couple of USBs full of my "standards".) Why are so many coders still using Vim and Emacs? The whole circuit was powered by a 12V car USB adapter. The first byte of every IIC sequence is the address byte, which is always master to slave, which the slave therefore ACKs if it received it. So, what was happening was the module was randomly changing i2c address during operation. After about 6 hours or so, I went to try to get it to work again. Well, before I went to order the part, I decided I'd try to get the FM transmitter working one last time. POWER: If the FM Transmitter does not turn on, then test it in another vehicle, if possible. Do I need HDMI-to-VGA or VGA-to-HDMI adapter? Mystery game from 2000s set on an island with a bell. Why is "hand recount" better than "computer rescan"? There is no way to get the module to "return" data over i2c as far as I can see. I had this put together on a breadboard and was lazy so I never turned it into anything more permanent. I have a laptop with an HDMI port and I want to use my old monitor which has VGA port. That only verifies one piece of this module, but you can see if it sends ACK. By using our site, you acknowledge that you have read and understand our Cookie Policy, Privacy Policy, and our Terms of Service. When I got to my destination, I checked it and nothing appeared wrong. To learn more, see our tips on writing great answers. site design / logo © 2020 Stack Exchange Inc; user contributions licensed under cc by-sa. Can you store frozen dinners in the refrigerator for up to a week before eating them? Have you checked that the 5 V power is still really 5 V? This sounds like a noise issue. Has there been a naval battle where a boarding attempt backfired? Then, I unplugged it and such. Check the device's manual to make sure that the device is installed properly and tighten all necessary connections. Why thin metal foil does not break like a metal stick? I'm not sure what good that does to the larger problem though, since the whole system would still be dead. I don't believe there was any kind of environment difference between the two times I tested it. It occured out of the blue one day. sack_stanford.edu. Make an RF transmitter: classic transistor oscillator or VCO module? The problem ended up being very simple. I used it for about 15 minutes and it was working flawlessly. What other cookies/biscuits were traditionally baked in shell shaped forms like this one? I'm not for sure what else I can do to fix it though. I tried changing the filter capacitors and that made it work a bit more often. Honestly, I'm not for sure if the FM transmitter component died, but I don't really have any way to test if it's working without it broadcasting. 90's PC game, similar to "Another World" but in 3D, dark, purple, locked inside a prison. MathJax reference. Ok, the module is definitely still in working condition. It only takes a minute to sign up. If I continuously reset my Arduino to make it resend it, I will eventually get it to work(I mean sometimes I have to try 8 times). Filling a shape with intersecting lines in TikZ. The schematic was fairly simple. The FM Radio Transmitter Does Not Function Correctly. All the wiring was still in place and such. It selects the i2c address. I'm thinking it could have been ESD, but I would've thought that'd happen when inserting or removing my phone from the 3.5mm jack. Why did my FM transmitter mysteriously die? Category theory and arithmetical identities. I was driving and listening to music and it suddenly stopped broadcasting. One thing they tutorial left out is that the LA pin must be held either high or low. I used it in my car as a FM transmitter so I could listen to my phone's music through my car's FM radio. Modern IDEs are magic. What's the verdicts on hub-less circle bicycle wheels? Sturdy and "maintenance-free"? Anyway, what could have killed my FM transmitter and what should I do to keep it from happening when I order a new one? I followed a schematic/tutorial for the FM transmitter module online. What prevents chess engines from being undetectable? Everything seems to work, but no broadcasting. To subscribe to this RSS feed, copy and paste this URL into your RSS reader. FM … Definitely not bad solder joints after all. Thanks for contributing an answer to Electrical Engineering Stack Exchange! Everything worked, but no broadcast. Did ESD fry my REF200 current source circuit? Now I'm completely baffled. A USB cable was hooked from that to the Arduino which I used for the 3.3v source. If it works as expected in the other vehicle, then the issue is most likely with your vehicle's power port. Or possibly a power sequencing startup problem, although that doesn't explain how it failed in the middle of operation. Asking for help, clarification, or responding to other answers. Electrical Engineering Stack Exchange is a question and answer site for electronics and electrical engineering professionals, students, and enthusiasts. @Earlz: Sounds like a bad solder joint somewhere. Use MathJax to format equations. Now, I tie it to ground, and everything works great. If the transmitter does not function properly, check if the wires and cables are installed correctly, connected to the right connections, and secured tightly in place. Why are "south" and "southern" pronounced with different vowels? In theory the USB adapter would already do this, but there are many cheap USB adapters out there. I used an Arduino, a litle 4-digit serial LED display, a couple of buttons and an FM transmitter component with breakout board. Making statements based on opinion; back them up with references or personal experience. June 2014 edited June 2014 in Model S. I have thousands of CDs, and my music-listening style is to grab a CD or two as I head out the door to the car and play those CDs. Anyway, basically, it seems like sometimes the module just will not receive the i2c initialization code. Stack Exchange network consists of 176 Q&A communities including Stack Overflow, the largest, most trusted online community for developers to learn, share their knowledge, and build their careers. Appears to be a noise issue, not for sure how to fix it though. This time, once again, the module appeared to just be dead. If it fails to work as expected in the other vehicle, then check to see if the fuse in the FM Transmitter has blown. It Does Not Turn On. Playing CDs -- Bluetooth transmitters not working. I also had some resistors on the i2c lines hooked to 3.3V (pull up resistors?). How do open-source projects prevent disclosing a bug while fixing it? If that works, then you know the module died. What RF transmitter and receiver to buy for long range, Decoupling capacitors on I2C interface + ESD protection, Decoupling capacitors introduce more noise on transmitter power amplifier.
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