CNC Router Limit Switch Opto-isolator Board

I have been building a GRBL based CNC routing machine which uses mechanical limit switches to "Home" the machine. I was experiencing some noise in the limit switch cabling that was falsely triggering the microcontroller and giving me all sorts of headaches. A little bit of research lead me to optocoupler isolation methods where a low signal circuit (logic devices) can be effectively isolated from high power circuits (motors/transformers/relays etc.). This board is a simple circuit with three optocouplers (LTV-817 or equivalent) to isolate six limit switches (2 per axis of my CNC machine) and the noise that is generated on the lines. PCBWay made these boards for me with excellent results. I really like the blue solder mask, it looks great with the blue LEDs, blue connectors and blue resistors I am using. The build quality of the PCB is great, it looks just how I designed it. PCBWay offers great pricing for small simple boards like this ($5!) so I will absolutely be using PCBWay for further PCBs I need made in the future. The only issue I found with my order was a delayed delivery (likely due to COVID19), otherwise I was completely satisfied.


May 26,2020
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PCB
HDI PCB
Assembly
FPC/
Rigid-Flex
X
Choose Num (pcs)
2 Layers
1.6mm
CNC
Machining
Sheet Metal
3D Printing
Injection
Molding
Aluminum
Aluminum
Resin
ABS
Riley Gunn View Profile
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