After struggling for a while to accurately position components in one go, I finally decided to determine the step size of the component move arrows on JLCPCBs website more precisely. It looks like the step size is exactly 1/400 inches, or 0.0635mm.
How I determined this: I created a PCB with a long pin header (C18197918, 11x1 pins, pitch 2.54mm) and uploaded it to JLCPCB (Project files: JLCPCB_Move_Step_Size.zip)
After clicking the up button 400x, the connector is moved up like this (or rather, I selected the button via the browser Dev tools & ran for (i=0;i<400;++i) $0.click() in the JavaScript console to do it for me):
After struggling for a while to accurately position components in one go, I finally decided to determine the step size of the component move arrows on JLCPCBs website more precisely. It looks like the step size is exactly 1/400 inches, or 0.0635mm.
How I determined this: I created a PCB with a long pin header (C18197918, 11x1 pins, pitch 2.54mm) and uploaded it to JLCPCB (Project files: JLCPCB_Move_Step_Size.zip)
After clicking the up button 400x, the connector is moved up like this (or rather, I selected the button via the browser Dev tools & ran
for (i=0;i<400;++i) $0.click()in the JavaScript console to do it for me):This is exactly (11-1)x2.54mm, so 1in.