@chrishamm

Still getting DCS Error...

"Does the DIAG LED on the Duet blink or is it dimmed?"

Not sure which one that is, looking at the wiring diagram LED V FUSED and LED 12V are the only ones active and showing a solid light. All other lights LED ACT, LED STATUS, LED +5V, and LED +3.3V do not turn on even during powering on the PSU Again Pi is powered by an independent 5V PSU and Mini is powered by a 24 PSU

"Do you have firmware 3.3 installed on the board?"

Yes checked with M115 Reflashed using Fallback procedure #1 and Fallback procedure #2 SD Card was removed after confirming again with YAT RRF is up to date

"If you have a multimeter, you can also check continuity between pin 22 of the Pi and Duet. When you're at it, you could check pin 17 as well, because that signal is required for SPI comms, too."

Checked with a multimeter and continuity is fine for both pins

Trying terminal again

Feb 06 22:19:30 duet3 DuetControlServer[4022]: Duet Control Server v3.3.0 Feb 06 22:19:30 duet3 DuetControlServer[4022]: Written by Christian Hammacher for Duet3D Feb 06 22:19:30 duet3 DuetControlServer[4022]: Licensed under the terms of the GNU Public License Version 3 Feb 06 22:19:30 duet3 DuetControlServer[4022]: [info] Settings loaded Feb 06 22:19:31 duet3 DuetControlServer[4022]: [info] Environment initialized Feb 06 22:19:31 duet3 DuetControlServer[4022]: [fatal] Could not connect to Duet (Timeout while waiting for transfer ready pin) Feb 06 22:19:31 duet3 systemd[1]: duetcontrolserver.service: Failed with result 'protocol'. Feb 06 22:19:31 duet3 systemd[1]: Failed to start Duet Control Server. Feb 06 22:19:32 duet3 systemd[1]: duetcontrolserver.service: Service RestartSec=100ms expired, scheduling restart. Feb 06 22:19:32 duet3 systemd[1]: duetcontrolserver.service: Scheduled restart job, restart counter is at 87. Feb 06 22:19:32 duet3 systemd[1]: Stopped Duet Control Server. Feb 06 22:19:32 duet3 systemd[1]: Starting Duet Control Server... ----------------------------------------------------------------------------------- pi@duet3:~ $ gpioinfo gpiochip0 - 58 lines: line 0: "ID_SDA" unused input active-high line 1: "ID_SCL" unused input active-high line 2: "SDA1" unused input active-high line 3: "SCL1" unused input active-high line 4: "GPIO_GCLK" unused input active-high line 5: "GPIO5" unused input active-high line 6: "GPIO6" unused input active-high line 7: "SPI_CE1_N" "spi0 CS1" output active-low [used] line 8: "SPI_CE0_N" "spi0 CS0" output active-low [used] line 9: "SPI_MISO" unused input active-high line 10: "SPI_MOSI" unused input active-high line 11: "SPI_SCLK" unused input active-high line 12: "GPIO12" unused input active-high line 13: "GPIO13" unused input active-high line 14: "TXD1" unused input active-high line 15: "RXD1" unused input active-high line 16: "GPIO16" unused input active-high line 17: "GPIO17" unused input active-high line 18: "GPIO18" unused input active-high line 19: "GPIO19" unused input active-high line 20: "GPIO20" unused input active-high line 21: "GPIO21" unused input active-high line 22: "GPIO22" unused input active-high line 23: "GPIO23" unused input active-high line 24: "GPIO24" unused input active-high line 25: "GPIO25" unused input active-high line 26: "GPIO26" unused input active-high line 27: "GPIO27" unused input active-high line 28: "RGMII_MDIO" unused input active-high line 29: "RGMIO_MDC" unused input active-high line 30: "CTS0" unused input active-high line 31: "RTS0" unused input active-high line 32: "TXD0" unused input active-high line 33: "RXD0" unused input active-high line 34: "SD1_CLK" unused input active-high line 35: "SD1_CMD" unused input active-high line 36: "SD1_DATA0" unused input active-high line 37: "SD1_DATA1" unused input active-high line 38: "SD1_DATA2" unused input active-high line 39: "SD1_DATA3" unused input active-high line 40: "PWM0_MISO" unused input active-high line 41: "PWM1_MOSI" unused input active-high line 42: "STATUS_LED_G_CLK" "led0" output active-high [used] line 43: "SPIFLASH_CE_N" unused input active-high line 44: "SDA0" unused input active-high line 45: "SCL0" unused input active-high line 46: "RGMII_RXCLK" unused input active-high line 47: "RGMII_RXCTL" unused input active-high line 48: "RGMII_RXD0" unused input active-high line 49: "RGMII_RXD1" unused input active-high line 50: "RGMII_RXD2" unused input active-high line 51: "RGMII_RXD3" unused input active-high line 52: "RGMII_TXCLK" unused input active-high line 53: "RGMII_TXCTL" unused input active-high line 54: "RGMII_TXD0" unused input active-high line 55: "RGMII_TXD1" unused input active-high line 56: "RGMII_TXD2" unused input active-high line 57: "RGMII_TXD3" unused input active-high gpiochip1 - 8 lines: line 0: "BT_ON" unused output active-high line 1: "WL_ON" unused output active-high line 2: "PWR_LED_OFF" "led1" output active-low [used] line 3: "GLOBAL_RESET" unused output active-high line 4: "VDD_SD_IO_SEL" "vdd-sd-io" output active-high [used] line 5: "CAM_GPIO" unused output active-high line 6: "SD_PWR_ON" "sd_vcc_reg" output active-high [used] line 7: "SD_OC_N" unused input active-high -------------------------------------------------------------------------