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hey angus, with a 40 cm opening you will be loosing about 90% of your energy out the top of the pot, so that will explain the long times and lack of a strong boil, if you reduce the opening to 30cm or get a pie dish 13cm in diameter then the energy loss drops to 50% cheers steve

Hey Rodda that looks awesome glad you got it going. I think the small pot is perfect for the kitchen and if you have the controller easy to disconnect then you will be able to move it between units cheers steve

Cause riding from newtown to stmarys on a fixie is really hard work :P Edit: +1 for pat

Any luck with it mate?

It's a bit of a bummer your selling your brewery mate, at least now when life permits brewing again you will know exactly what you want build. Cheers Steve

From the looks of it the push buttons have pull down resistors on them, my design has pull up resistors so the code would need to be changed to reflect that.

yeah mate I did cut down the thread and I also reduced the size of the flange on the inside so I could get it closer to the bottom of the pot. I use hop socks when brewing with pellets and that reduces the amount of trub at the end of the brew, I haven't found too much of a difference in...

Ok, so how the circuit works is when the program wants the heater on pin 9 goes high (5V) , this then runs about 6mA through the LED, resistor and then to the base of the transistor (middle pin), this then allows the transistor to start conducting (turn on) and then 12v should appear across the...

Ok with a ssr you are always going to get voltage across the output so it is not an indication, the led lighting up on the ssr or 12v across the heater output is a good indication. Secondly it takes a little while for the pid to ramp up the first time the heater button is pressed, it can be a...

I,m with you screwy, if you have been using one thermometer and you are happy with the results you are getting and then you get another thermometer and it reads different then just make sure that you know the difference between the two and compensate when using the new one. Measuring the mash...

yeah mate without the DS18b20 connected you get a reading of over 4000 degc so it looks like all is well, and yes you won't be able to get the heater to turn on with a temperature over 4000 degs :) well done, it's quite simple to get the boards made up isn't it. cheers steve

OK, I have bought some BC547 to try out and they work fine, because the 2N2222a can have different pinouts I would recommend using the BC547, they have a little less current handling but it will work fine. (real_beer had me worried when he said that on his board the buzzer was sounding and...

Hey Tynian, with the buzzer on and the relay picked up it sounds like the transistors are around the wrong way. I'm going to have to look at the data sheets again, what type of tranistor did you use. Cheers steve

Cool they will have the same pitch, you might have to remove the locating tab but I don't know cause I haven't looked at the data sheets Cheers Steve

Try rs components 532-5231 that is what I got. I was going to use the modtroix ones but then changed my mind and went with the rs ones. I had to change the orientation of the pins on the eagle library to make them the right way I'm wondering if it has changed back for you because you don't have...

that looks awesome mate

hey real_beer, the chips are fairly rugged and handling them with out earthing yourself shouldn't fry them. To me it sounds like the tranistors are not right but I can't tell without actually having the unit. I would say the screen needs the contast adjusted ( the trimpot) but I would expect...

yeah if your getting 0 deg with the sensor removed then there is a short between pin 11 and ground. There is a ground plane surrounding all tracks so a little too much solder and heat could cause a short, check that there is a gap around the solder pads. The boards have a solder mask so if there...

Yeah when I saw that on an american homebrew website I thought WTF, looks like they are relying on the RCD to trip off the supply hence the emergency stop switch. I think it is stupid to rely on one safety device to do the job of another safety device. If you want an emergency stop switch get a...

85 degs is the default temperature that is written to the 'scratchpad' when the DS18B20 is first powered up, sometimes you will see this when the brauduino is first turned on but will disappear when the next temperature read happens. If your getting it all the time then it looks like something...