This repository provides four pcbs for controlling an open hardware fast high resolution laser. Details can be found on Hackaday. The pcbs are; a hat for the raspberry, a cape for the beaglebone, a pcb to detect the start of the scanline and a pcb which acts as bridge between the main board and the modules in the scanhead.
The raspberry pi hat is in development and works with a FPGA. The beaglebone board works with the 200 MHz pru on the bone. The bill of materials for each board can be found in their subfolder.
Building board for 3 modules cost me around 130 euro's The components cost is 104 euro's at Farnell. I paid around 70 euro for 5 PCBs made by Eurocircuits. These had a gold finish and a delivery time of a couple of days. Later, I used PCBway at around 26 dollars and a lead time of 5 day. You roughly pay 1 euro per PCB here.