Do you have a link to something like pcbway with a pre-assembled layout, etc?

[matbeedotcom]

I'm trying to interface with my Tiny1C but their usb development board seems quite locked down

[danjulio]

No sorry. I just looked and it is a bit of a process to add a project to share on PCBWay but I'll put that on my list of things to try to get too.

[csvke]

I'm trying to interface with my Tiny1C but their usb development board seems quite locked down

Can you post pictures of your usb development board? I have seen two different 'usb development board' in Taobao / AliExpress, one of them is only usb on a JST MX 1.25mm 4 pin connector and the other one has a usb type-c female connector and a number of 2.54mm pin through holes on the PCB, in which the supplier just refuses to give me the schematics but one can see it through the traces and make an educated guess that it's probably I2C and SPI plus possibly other pins for VCC / GND and UART pins to communicate with the IC in the sensor for flashing firmware.

[danjulio]

Can you post pictures of your usb development board?

Here is a photo of the dev board I originally got from Infiray.