4.4 Disconnecting mEDBG

The target controller ATtiny817 can be completely separated from the mEDBG, but this requires some small modifications to the board using a soldering iron. By removing the resistors in the sections shown in the figure below, the mEDBG is completely disconnected from the target controller. To reconnect the mEDBG again, solder in 0Ω resistors or solder in 100-mil headers on the header footprints and use wire-straps to connect the interfaces.

Figure 4-5. Kit Modifications
Table 4-7. mEDBG Connections
DesignatorMountedFrom (mEDBG)To (ATtiny817)
R104YesVCC_BOARDVCC_TARGET
R203YesUPDIPA0 UPDI / RESET
R205NoCLK_OUTPA3 CLKI
R206YesCDC UART RXPB2 UART TX
R207YesCDC UART TXPB3 UART RX