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The Watch would need another build. It doesn't seem to work on the same frequency as the ez430-RF2500

If you are going to attempt this, use IAR Embedded, the sample project compiles with no problem. The CSS project from TI is a bit messed... The IAR Embedded compile is very clean and easy. I will document the steps. I need to test and calibrate the system, but the headless unit works!! On...

Good idea on the watch... I will check into it.

This is the documentation http://www.ti.com/lit/ug/slau144i/slau144i.pdf Here are the CORRECT changes. OLD Line 223: ADC10CTL1 = INCH_10 + ADC10DIV_4; Change to OLD Line 223: ADC10CTL1 = ADC10DIV_4; LINE 255 Change to: ADC10CTL0 = SREF_1 + ADC10SHT_3 + REFON + ADC10ON +...

It is a fun build. I am trying to be as detailed as possible.

Step 6: Fill the cap with Silicone Step 6a: Example of another sensor I pulled out of a pipe with the silicone (dried) on the sensor Step 7: Put on the cap.

Step 1: Put on the 0.1uF bypass cap on the wires, and the series resistor as in the datasheet. I find using 0.100 square post fit the TO-93 leads well. Step 2: Put on the heat shrink Step 3: Put on the sensor Check the datasheet, but when viewed from the bottom with the flat side up...

Cool.

Missed that... horizon, I mistook it as a 3 ft rise. Thanks Joel

I was thinking of running two or three of these in parallel for recirculating in a RIMS setup.. http://www.amazon.com/dp/B004HHW0FU/?tag=skimlinks_replacement-20 Price is right, flow is low. Joel

Boxed it up. Finishing steps. 1) Drill a hole of side of the box, bring the wires out to the Solid State Relay 2) Mount the box for the SSR on the side of the heater 3) Mount the PID on the heater. I will post the the final pictures this weekend. I will log and post the temp...

1) ez430-RF2500, $50.00 + shipping from digikey 2) Pipes + Enclosure (Copper + PVC $20.00, Stainless +pvc $35.00 3) Sensor+Supporting electronics, $20.00 So I am in it for $105.00. Not cheap, but for a one-off.... Joel

That was just the EE in me coming out.... Best to design a Make-before-break matching the input.... but I think it is likely a simple Wheatstone bridge....

The image shows the internals of the "Headless" brewmeter. I used two AAA battery holders, wired in series with a piece of plastic in the middle which extends above the holders on which the ez430-RF2500 is mounted using some Velcro or sticky tape. I forgot to grab some 3.3Volt regulators...

I am mounting the thermal fuses in the middle of the pipes (outside of the insulation). The photos show how to attach. Use crimp connectors, and you will need high temp insulation (I selected high temp heat shrink, but you could use an appropriate insulating sleeve). The fuse will be...

Good idea.

Please post photos if you build this.

Brewing Science and Practice https://www.homebrewtalk.com/f128/best-brewing-science-books-107280/ What are your mash schedules and how much insulation you are going to put on the Mash Tun. As I understand it, the waste heat is used (e.g. from the boil) to mash the next batch, which is...

Still really good... Today I am drawing a few pints to advance the science... Good carbonation, no indication of oxidation... clear. I will take a photo of the bad once empty :mug:

Thanks for the interest. It works really well, I have been using it for 3+ years and many 5 and 10 gallon batches. This thread is to document the build process. I decided to make the system a little more refined. Joel