Got the USBridge and Sparky SBC today. Came with Dietpi software. I went to the Dietpi website and downloaded the dietpi.txt for Roon Endpoint. Connected DAC (Dragonfly Red) to the USbridge, Ethernet cable and power to the Sparky Board. Power LEDs come on. Red light on the Sparky board flashes on and off but nothing happens. With eMMC connected, I get power to the DAC but Ethernet light doesn’t flash, suggesting it’s not being powered. With microSD card connected, and eMMC disconnected, Ethernet comes on but there is no power to the DAC. . I’m powering the unit with a iFi ipower 5vDc, which should be adequate power.
Seems like either a software problem (fixable) or a hardware problem (defective unit). I hope someone from Allo.com is reading this topic and will respond.
As my detailed post, above, shows I only copied the dietpi.txt for the eMMC. I didn’t flash anything. However, that did not work. So, I flashed the image from the Dietpi website for the Sparky SBC on to a microSD and saved the dietpi.txt from their website to configure the microSD card for Roon Bridge (or Roon Endpoint). That didn’t work either. My impression is that either the Sparky SBC or the USBridge or both are defective. I will email Allo.com for replacement boards.
I don’t understand you saying you “downloaded the dietpi.txt for Roon Endpoint” or “saved the dietpi.txt from their website to configure the microSD card for Roon Bridge (or Roon Endpoint)”. This sounds very wrong to me. Are you sure you are doing this right?