Recent content by astrocaver

The flow sensor plastic body looks like similar material as the pump housing. After a few minutes of circulating warm PBW and several rinses I dont have any worries.

The only arduino library needed was for the LCD display. The board was hand-wired on perfboard. The pump & RIMS tube frame was yellow-painted scrap plywood. Lacking a hot liquor tank, you have to do no-sparge mashing or else batch sparging with a small amount of sparge water heated on the...

The PID was $35 from www.sureelectronics.net It includes a threaded and armored K thermocouple but I substituted another one with a small tip that would fit in the thermowell of the RIMS tube. It puts out both 12 volt pulses and relay contact closures when calling for heat. You wire the 12 volt...

The flow sensor was the 1/2" high-temp unit from futurlec.com It cost $10.90 It has a little ceramic propellor in it that spins as fluid goes past. A magnet passes the hall effect sensor making low-resistance pulses as it spins.

The circuit board has an arduino mini and a socket for the lcd. One input pin is biased to accept the hall-effect sensor input and one output pin drives a couple of small mosfets that drive a pair of 5volt relays. One relay drives the flow fault lamp and the other is in series with the heater...

Did you get to the web page ? (a couple dozen pictures of the thing) www.astrocaver.com/rims What detail did you want ?

Www.astrocaver.com/rims It fits in a Honda fit. After 3 batches I think I have the process figured out. Found a lot of good low-cost sources. It has an Arduino application for the flowmeter. It displays flow rate and activates an interlock to shut off current if no flow. The flowmeter was $11...

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