So I bought the DIY kit from AliExpress. (All of the info links about the thing will be at the end) Soldered it (except the LEDs, I want to get the MCU issue resolved first). And additionally soldered a reset button in. It seems that at the moment my MCU (STC12C5A60S2) contains wrong code. I tried to download the Cube code into it via 4pin UART, but the STC-ISP just stuck at "Checking target MCU..." I checked MCU with oscillograph and it seems to be working fine including reset button. It recieves signals on the TxD leg, but does not react to them. Anything that I found so far was that my UART may be 4.25V and changing the UART programmer will help, but: I thought if I connect the board to a power bank and UART at the same time then any signal from PC should be solid 5V. Correct me if I am wrong on that. Any help would be appreciated. Links and info: Everything LED Cube related (schematic, datasheets, tools, code etc.): https://github.com/tomazas/ledcube8x8x8 AliExpress link: https://s.click.aliexpress.com/e/LlrCw18
: Edited by User
It recieves signals on the TxD leg Tx->RX, RX->Tx connected?
Boy, do I feel myself extremely dumb right now >.< Thank you! :)