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SparkFun will be closing early at 3:30 Friday 5/27 and remain closed Monday for Memorial Day (5/30). Orders placed after 2pm MT on Friday (5/27) will process and ship out on Tuesday (5/31).

Member #57671

Member Since: January 11, 2009

Country: United States

  • I have a strange problem with this kit, on the breadboard it is working like a charm, but as soon as i solder the BNC connector and the stamp together it stops working, it just shows a ph of 7.00, it is extremely strange, i have made a very nice and proper PCB for it, checked all connections and everything, all is very fine and all is very clean. I have tried and experimented a lot and i rely can’t understand it, my last crazy idea is that it does not like some property of the solder, but i think this is a bit crazy, i am using spark fun’s 0.020" special blend. Have anybody else had similar problems or anything like that???

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