Water Cooling Monitoring 2021-03-16

Material Used:

Arduino, Oled SSD1306, Flow sensor YF-S201 & DS18B20

hello all,
I just started some weeks ago into the CNC world with a workbee 1510 and a watercooled spindle.
I was worried about the cooling of my spindle, some of my concerns was :

• forget to start the pump
• loss of flow
• increase of temperature

then I decided to buy some components for less than 10€ to design a small arduino based project to keep those concerns away from me and my CNC.

• Arduino (nano)
• YF-S201 for the flow sensor
• DS18B20 for the temperature sensor
• one 0.96" Oled
• one 5V relay

if the flow is less than 20l/h, the arduino open the relay which cut the loop of the doorswitch input of my blackbox controller,
Result = spindle stop !

when the flow is not active, the Oled shows the coolant temperature.
when active, you'll see the actual temperature + also temp at start & the flow rate

at start, Opendbuilds logo are showned

the code is provided and ready to help if some of you are interested in!