lramos7 Posted April 8, 2020 Share Posted April 8, 2020 Dear friends. I am trying to initialize my opi lite 2 without success. I'm using a power source, that's ok! I measured the voltage on the RX pin and I have 3.2v. The TX pin at very low voltage. I used a TTL / USB converter to check the debug ttl, but nothing appears. I configured the converter to 3.3v. Can anyone give me any tips on what to do or can I throw the board away already? Link to comment Share on other sites More sharing options...
Werner Posted April 8, 2020 Share Posted April 8, 2020 Try using another sd card and start with a fresh image try using another power supply Make sure to use 115200 as baud rate. Link to comment Share on other sites More sharing options...
lramos7 Posted April 8, 2020 Author Share Posted April 8, 2020 15 hours ago, Werner said: Try using another sd card and start with a fresh image try using another power supply Make sure to use 115200 as baud rate. I've tried with 3 different Sd. I installed all the images, both Armbian and Orangepi. I have an Orange pi pc plus and the tested cards work on it, as well as the power source. I just haven't tested it with baud rate 115200, but I don't think it helps much. As I said the pin RX I can measure 3.3v, however the TX is with very low voltage. I would like measurement indications to make sure the card is functional or not. Link to comment Share on other sites More sharing options...
Tido Posted April 10, 2020 Share Posted April 10, 2020 On 4/9/2020 at 1:07 AM, lramos7 said: to make sure the card is functional or not FEL mode, not exactly this, but maybe https://linux-sunxi.org/FEL @TonyMac32, did once a nice write up about SDcard and frequencies... maybe also about powering it.. found it https://forum.armbian.com/topic/8153-sd-communication-electrical-considerations/? Link to comment Share on other sites More sharing options...
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