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by MauiJerry
Sat Jul 20, 2019 12:08 am
Forum: Troubleshooting
Topic: Low Power warning on Pi3B+ with 5v10A supply? sw hook for low power?
Replies: 9
Views: 251

Re: Low Power warning on Pi3B+ with 5v10A supply? sw hook for low power?

hmm, might be the bus->usb C wires are too thin. I hacked end off of a usbC cable I had lying around. Alas that is unfortunately about the only way to get a USB-C to bare wire (screw terminal) wire. I'll look for a fatter one and give it a try. As a test of this, I pulled out an CanaKit 2.5a supply ...
by MauiJerry
Fri Jul 19, 2019 11:26 pm
Forum: Troubleshooting
Topic: Low Power warning on Pi3B+ with 5v10A supply? sw hook for low power?
Replies: 9
Views: 251

Low Power warning on Pi3B+ with 5v10A supply? sw hook for low power?

I'm doing a project with a new RaspberryPi 3B+ and latest OS (2019-04-08-raspbian-stretch-full), using an external 5v 10A switching power supply (this one: https://www.amazon.com/Aclorol-100V-240V-Switching-Converter-5-5x2-1mm/dp/B07CMM2BBR). It keeps giving me (intermittently) the Low Power Warning...
by MauiJerry
Thu Jul 11, 2019 8:21 am
Forum: Python
Topic: convert thermocouple voltage to temperature
Replies: 13
Views: 1703

Re: convert thermocouple voltage to temperature

its been over a year, so original post probably doesnt need this now, but for future answer hunters, Take a look at the thermocouple_reference project https://pypi.org/project/thermocouples_reference/ Python module containing calibration data and lookup functions for standard thermocouples of types ...
by MauiJerry
Tue Jun 11, 2019 2:58 am
Forum: Automation, sensing and robotics
Topic: 24-bit 16Channel ADC with 16 digital I/O expansion PCB
Replies: 24
Views: 15638

Re: 24-bit 16Channel ADC with 16 digital I/O expansion PCB

Thanks for fast response Bud! The response to i2cdetect, but fail with Q2W is perplexing. I was thinking maybe it really needs 5v to run, but i found a MSc thesis Low-Cost Evolution in Materio that references this thread (credits it with solving months of problems with LTC2499). It appears to use a ...
by MauiJerry
Tue Jun 11, 2019 1:07 am
Forum: Automation, sensing and robotics
Topic: 24-bit 16Channel ADC with 16 digital I/O expansion PCB
Replies: 24
Views: 15638

Re: 24-bit 16Channel ADC with 16 digital I/O expansion PCB

Stumbled on this old forum thread after finding the LC2499 and Analog's DC1012A-A demo/eval board, which includes a voltage reference and eeprom. Trying to use this board to read some thermocouples on a Raspberry Pi 3B+. I currently have the device running on 3.3v with only a simple pot on Channel 0...

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