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by bradyw
Thu Aug 14, 2014 1:38 pm
Forum: Interfacing (DSI, CSI, I2C, etc.)
Topic: MAX31855 Thermocouple driver
Replies: 43
Views: 24987

Re: MAX31855 Thermocouple driver

Does this work with all MAX31855's? For example, could it work with a type K and type T?
by bradyw
Mon Aug 04, 2014 8:49 pm
Forum: General discussion
Topic: Using MANY GPIO's at the same time
Replies: 9
Views: 1659

Re: Using MANY GPIO's at the same time

Yes, I need to use thermocouples (per project manager's request).

I have amplifiers and analog to digital converters on order for testing. That is not a concern.
by bradyw
Mon Aug 04, 2014 3:24 pm
Forum: General discussion
Topic: Using MANY GPIO's at the same time
Replies: 9
Views: 1659

Re: Using MANY GPIO's at the same time

This system will be used in a small test room. We are manipulating the temperature inside and outside and monitoring the effects with different windows and doors being used on the room. The project manager wants 40 thermocouples to monitor the temperature at various locations inside and outside the ...
by bradyw
Fri Aug 01, 2014 6:22 pm
Forum: General discussion
Topic: Using MANY GPIO's at the same time
Replies: 9
Views: 1659

Using MANY GPIO's at the same time

Hello all, I want to be able to use 20-26 of the GPIO pins to collect data. I want all the data point to be collected at the same time. I was wondering if there is any downside to doing that much work at the same time. Is it too much for the Pi to handle? Also, the data I will be collecting will be ...
by bradyw
Fri Jul 25, 2014 2:04 pm
Forum: Advanced users
Topic: High Power Stepper Motor
Replies: 15
Views: 5633

Re: High Power Stepper Motor

I appreciate the suggestions, but I think most of this electrical stuff is way over my head. I decided to spring for the driver recommended by the stepper provider. I got it in the mail yesterday and I works like a charm.
by bradyw
Thu Jul 17, 2014 2:45 pm
Forum: Advanced users
Topic: High Power Stepper Motor
Replies: 15
Views: 5633

Re: High Power Stepper Motor

Thank you for the in depth response. I have considered getting the driver from Automation Direct (the same company that makes the stepper), but I really don't want to drop the $155. If I can get this stepper to work I would be installing them in multiple locations, so adding that much to the cost wo...
by bradyw
Thu Jul 17, 2014 1:34 pm
Forum: Advanced users
Topic: High Power Stepper Motor
Replies: 15
Views: 5633

Re: High Power Stepper Motor

I'm not finding anything on using the L298 in parallel mode. Can someone point me in the right direction?

Also, I'm using an 18V 2A power supply.
by bradyw
Wed Jul 16, 2014 8:54 pm
Forum: Advanced users
Topic: High Power Stepper Motor
Replies: 15
Views: 5633

High Power Stepper Motor

I'm trying to operate an Automation Direct Stepper Motor Nema 23 Single Shaft 166 oz-in Bipolar w/ 1ft cable with the Raspberry Pi (model b). Here is a link: http://www.automationdirect.com/adc/Shopping/Catalog/Motion_Control/Stepper_Systems/Stepper_Motors_-z-_Cables/STP-MTR-23055 I have tried using...

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