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1  Using Arduino / LEDs and Multiplexing / Re: 0-10v PWM dimming problem on: November 10, 2013, 02:16:12 am
I am kinda in the same situation I want to control the 0-10V dimmable led driver with a arduino but I had a idea of a different way to go about it. If there is 10V when measured across the grey and purple that leads me to believe there is a pull up in the driver that is set to 10V what about just placing the transistor across the grey and purple and pulsing it that way. that way a separate 10V power source is not necessary.
2  Community / Exhibition / Gallery / Re: MAX31855 Breakout Board for Thermocouple on: January 24, 2013, 05:04:49 pm
I had alot come up after that last post (new baby, work etc...) so I have not done more work on the design but I will pick it back up here is what it looks like right now I am making sure I can sorce the surface mount precision resistors for the load side it needs to have a 400 Ohm and 4k Ohm resistor to be universal
3  Using Arduino / Sensors / Re: Temperature sensor in up to 800 C degrees aplication on: January 05, 2013, 06:39:00 pm
You can also get a couple as a Sample from Maxim when I did it I got 3 of them for free. https://shop.maximintegrated.com/storefront/searchsample.do?event=Sample&menuitem=Sample&Partnumber=MAX31855KASA%2B
4  Using Arduino / Sensors / Re: Temperature sensor in up to 800 C degrees aplication on: January 05, 2013, 04:26:05 pm
I made a break out board for the MAX31855 chip because I wanted to play with that chip too.

I have the bare board up on lish.com with the caps inductors and protector. https://dcande.lish.com/
5  Community / Exhibition / Gallery / Re: MAX31855 Breakout Board on: November 24, 2012, 02:10:11 am
next I am designing a board for the MAX31865 RTD SPI chip it is in progress thou I already have 2 sample chips for it.
6  Community / Exhibition / Gallery / MAX31855 Breakout Board for Thermocouple on: November 24, 2012, 01:59:59 am
Hi everyone a little back story I was wanting to play around with the MAX31855 TC chip and ordered samples from Maxim then realized I didn't have a breakout board for it and the only one I could find online was Adafruits and it only had screw terminals on it and all of my thermocouples have the mini connector on them and I didn't really want to cut them off. so I designed a board in Diptrace and found a place that would make 108 of them for pretty cheep they worked great and I even went to the Arduino Labview community and worked on making sketches to run the MAX31855 in labview as well. now I have alot of boards lol not sure what I should do with them was thinking of selling them on ebay no one has them with the mini connector from Omega in the states unless you buy the kit from Maxim. I used there circuit for this board. What does everyone think is a fair price to ask for these boards I spent a bit of time getting them as compact as posible and making sure the chip was close to the connector for the onboard cold junction compensation of the chip.



7  Using Arduino / Networking, Protocols, and Devices / Re: New ethernet shield? on: August 03, 2011, 09:26:42 pm
It does support PoE but you have to buy a Silvertel PoE Module AG9120S http://arduino.cc/en/uploads/Main/PoE-datasheet.pdf and solder it to the board. Yes it is a 12v module but with a bridge already installed on the Ethernet Shield from V+ to ADJ it supplies 9v to the Arduino it can be used with a power injector that supplies 48v over the data lines or over the extra pairs but not both at the same time.

The module can be found here http://www.semiconductorstore.com/cart/pc/viewPrd.asp?idproduct=13996
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