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I had 24.5 lbs of grains and 7.5 gallons of water and I ending up filling up the 10 gallon Gott cooler to the top. I mashed in at 122F and then set the PID target to 153F. Once it reached 153F, I held it at 153Ffor an hour (just let it run), and then I set the PID to 167F and once it it hit...

This weekend I am testing with a 10 gallon mash of a Dale-Pale Ale clone, and another 5 gallon batch. I will put up the results.

Send any questions. I will be posting some final pictures of the current build. Joel

Sometimes simpler is better. I am going to use a simple USB type A connector to provide 5Volts to the XMEGA. I might put on a type B USB connector and enable a hot swap. How important is this? I am assuming the USB will be used only for software updates in the finished design. Joel

The brewtroller is a nice product. Here is my rough, small quantity price estimate... 1) XMEGA $40.00 (with the display,bootloader, USB interface etc..) 2) Wifi $30.00 3) The board spin ($30.00 small quant) 4) Electronics for 1 temp probe but up to 8 SSR $50.00 (each additional probe is...

I am only designing the base board to support the xmega-a3bu xplained board. We need to make sure that we don't fry the processor if something bad happens to the sensors or activators. The netduino is an option, but I would still design a base board for it to isolate the analog inputs and...

I need to up the 5VDC for the board, but the 5VDC for the switching will remain the same. To do the hot swap for USB.... Linear LTC4412 - Low Loss PowerPath Controller in ThinSOT will be used to switch between the Board power and the USB power Getting close. Joel

Need to hook up the power to the XMEGA, and size the included 3.3 V regulator to make sure it can drive the WiFi module. Then I will spin a few boards for testing.

Sigh, one last board addition, it adds some cost, but if you don't want to isolate the inputs you could populate only 1/2 of them. I am using murata isolated DC to DC converters to provide the input and output power and the power for the XMEGA. http://www.murata-ps...ncl/kdc_ntv.pdf The board...

1) Put in the ground plane on the isolated output side 2) Corrected the voltage on the Input Isolation side of the board 3) Putting the BOM on the board. TBD: Bypass caps on the input isolation side of the board. Digital Ground plane, signal and power labels Joel

The MAX6603 gives us the RTD to voltage conversion we need with isolation, and will fit nicely on a 16 pin DIP sized board, so it can replace a TI ISO122JPE4. I think we have the following. 1) 8 isolated inputs supporting PWM and Analog temp sensors and RTD sensors [with a small adapter board...

Please Send suggestions

Latest Change Isolated Inputs, but we can also use adapters in the DIPs to drive different temp sensors. To Do: Hook up the WiFi Module

I am working on the board design. With little to no effort, I can support analog sensors like the TMP35 and TMP03 I could provide an analog reference for use with Thermistors and a Wheatstone bridges. Thoughts/suggestions? See below...

Here is a start to the interface board. ExpressPCB so it will be easy of others to spin.

The initial testing seems to show the tmp35s to be accurate. In the datasheet ADCi indicated when driving a cable that a 0.1uF cap bypass and a 750 ohm series resistor is required. I ended up using a 0.1uF and a 560 ohm series resistor, haven't had any issues with noise. I am driving about...

Thanks. It would be nice to have the temps logged on the chronos-TI watches.

I have selected the following for the first build. 1) ATMEL: XMEGA-A3BU XPLAINED $39.00 2) MicroChip: MRF24WB0MB/RM $29.00 3) Analog Devices: TMP35 $1.50 I will design a PCB to hold these components and make the design available, or we can do a group buy to...

Should be able to support both physically connected sensors and output switches, and "virtual sensors" and "virtual switches" ones which are connected over WiFi. The limiting factor on the physical is the number of analog inputs and outputs, and the limit on the virtual is the update rate...

The headless unit based on the ez430-RF2500 is done. Cost: $100.00 You can add 10+ sensors to the wireless network with no changes Powered on 4 AAA batteries, Eneloops should provide us with 12+ hours before a recharge. The TI driver simply dumps data to a com port the format is...