Recent content by clearwaterbrewer

AA-1 IC died due to one of my Johnson proportional valves drawing too much current (30mA+). The other three channels worked, but when I went to use one, I killed the entire chip. Then I killed the IC I borrowed from my spare AA-1, that is when I got out the millamp meter. The LT1639CN is...

Just in case @BrunDog is listening... MAX31888 would be a great addition... General Description The MAX31888 is a 1-Wire high precision, low power digital temperature sensor with ±0.25ºC accuracy from -20ºC to +105ºC for precision temperature monitoring. The MAX31888 operates at 68μA...

I have three of the 3-wire spring return 'solid' valves and been operating since 2019-2020 with no issues.

The other one worked until I messed with it, and the AA-1, and both proportional valves have the same ground terminal on my DIN rail... the AA-1 has power and a good ground and is not outputting voltage.

Anyone have experience overloading or hurting the AA-1? I an using 2 channels of one to signal some Johnson Controls water valves. I am using a meanwell 12V supply input and 0-10V output and they have worked for many years. I have not used my system for about 4 months and when I went to use it...

Any issue with I/O conflicts for the 1-wire or anything else??

It looks like a lot of people having issues with the Giga R1 connecting via usb to a COM port from what i am seeing on the Arduino forum, so I would be wary of being an early adopter.. edit - all good, they shipped some units without the bootloader, and their instructions on how to prep it to...

I got the Giga R1 Wifi boards in, I know there is no BC firmware yet, so just tinkering... of course the usb port doesn't work with standard win10 or Win7 drivers...

grounding... and isolation... the sudden change in current to the start or stop of the motor and/or relay is causing an actual change in voltage on your RTD, and the RTD smoothing algorithm takes a while to return.. research: "flyback diode"

For the tri-clamp valve, you can get gaskets with a smaller opening, but only works if both fittings are same smaller diameter. https://www.glaciertanks.com/tri-clamp-silicone-gaskets-40rxpx-100-fda.html

a sealed container with flexible plumbing in the bottom and out the top with a scale measuring very acurately and a lookup table...

Here is my rotovap setup doing cucumber extraction...

I got it working. I think the failure was power related crash that caused it, the following steps got it working, but it took me many attempts to get to the final working procedure.: Shut down BruControl CMD prompt: sqllocaldb stop mssqllocaldb sqllocaldb delete mssqllocaldb sqllocaldb start...

First, where is the SQL documentation? I look in the 1.1 manual and there is no mention, I remember some sort of migration guide or something, but I last fixed SQL over 2 years ago, and now having a login error so my graphs are lost with every reboot again. I look in the FAQ, Build, and...

I use a pair of Buchi R215 Rotary Evaporators for flavors... For commercial, it exists, it works, it is espensive, and is used more to protect the flavor of what is left after you remove the alcohol... that is N.A. Beer... I present to you the Alfa Laval De-alcoholizer De-alcoholization module