lramos7 Posted April 8, 2020 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?
Werner Posted April 8, 2020 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.
lramos7 Posted April 8, 2020 Author 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.
Tido Posted April 10, 2020 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/?
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