Hello everyone, I need some advice about my fried IOIO.
I bought an IOIO from an authorized reseller in Chile (it seems they import the device from SparkFun) and installed it on a flying wing. Its task is to control two servos, one ESC, receive data from an differential pressure sensor and a altitude sensor. The whole system is feeded from a 11,1 V, 1200 mAh LiPo battery. IOIO, servos and sensors are feeded from the BEC in the ESC, which supplies 5V. Connection cables from battery to IOIO weren't larger than 20 cm. This setup worked normally exactly two days. As I was testing the system behavior constantly, I connected and disconnected the battery several times, until the IOIO stopped turning on. Only worked if it was connected by USB to my laptop or phone. After reading some old threads there and making some tests like measuring the resistance, the conclusion was that probably the VREG was fried. So I went to the store to change it, they said they would examine it to determine if it met the requirements to apply the warranty (no mishandling, no reverse polarity, etc). Before going to the store, I wrote them citing the threads in this group about the VREG frying issue as arguments to my claim in hopes they were aware of the issue. Sadly they said that my case was the first they've ever seen. While they were testing the IOIO, they sent an email to SparkFun asking some details, after that they answered to me the following points: >> - *IOIO OTG card has not design or structural hardware errors* >> - *Component TPS62133RGTT is correctly installed to be used with the >> IOIO OTG hardware. This component is sensitive to voltage changes >> (greater >> than 15VDC) or to inverse polarity.* >> - *Component TPS62133RGTT allows up to 15V on its input and gives 5V >> on its output. This is the damaged component.* >> >> *As result of our tests we can say to you that the product is damaged >> because of manipulation, so we can't change your product using the warranty >> because it is not a manufacturing error.* >> > In my opinion they are correct in the point that the IOIO has no manufacturing errors. But the design didn't take into account the initial voltage surge, and they are saying that the failure of the device is only my fault. I need some additional arguments to make them understand that the product failed under normal conditions of operation - even if the correct components were installed. Thank you in advance. -- You received this message because you are subscribed to the Google Groups "ioio-users" group. To unsubscribe from this group and stop receiving emails from it, send an email to [email protected]. To post to this group, send email to [email protected]. Visit this group at https://groups.google.com/group/ioio-users. For more options, visit https://groups.google.com/d/optout.
