Hello Guys, I think the original question resides on the pinout of UISBASP. It HAS a txd and a RXD. If we have a TXD, RXD and a RST (hope it can be a DTR...) Has anyone tried this way? I recently bought a USBASP board and confess never used it yet. I use to do it with a "big" programmer or a buffered TX/RX/DTR to USB adapter.