PID autotuning - not working for heating application

Started by Frank W. in comp.arch.embedded1 year ago 52 replies

Is there a control engineering expert here? I could us a bit of help on how to implement a PID autotune function for a heating application (a...

Is there a control engineering expert here? I could us a bit of help on how to implement a PID autotune function for a heating application (a small boiler). My current PID autotune function produces no reliable results. I use the relay feedback method (?strom and H?gglund) but it seems that the ultimate period Tu - one of the paramters determined with the relay feedback test - is directl...


Problems annotating a symbols' size using gpasms .DEF

Started by Johann Klammer in comp.arch.embedded1 year ago 1 reply

I had been trying to output some sort of address name mapping for debugging. Using the Map file seemed promising initially. But when trying to...

I had been trying to output some sort of address name mapping for debugging. Using the Map file seemed promising initially. But when trying to dump memory locations, it became obvious that I needed the sizes, too. The pure MPASM syntax does not seem to allow annotating that information. gpasm looked superior in that respect. Their .DEF extension specifically. BUT it seems to be moving


FINAL CfC Ada-Europe 2020 Conference - Tue 14 Jan deadline!

Started by Dirk Craeynest in comp.arch.embedded1 year ago

----------------------------------------------------------------------- FINAL Call for Contributions ...

----------------------------------------------------------------------- FINAL Call for Contributions 25th Ada-Europe International Conference on Reliable Software Technologies (AEiC 2020) 8-12 June 2020, Santander, Spain www.ada-europe.org/conference2020 *** DEADLINE Tuesday 14 J...


stty -F /dev/ttyUSB0

Started by Johann Klammer in comp.arch.embedded1 year ago 4 replies

stty -F /dev/ttyUSB0 speed 0 baud; line = 0; min = 1; time = 0; -brkint -icrnl -imaxbel -opost -isig -icanon -iexten -echo (something is...

stty -F /dev/ttyUSB0 speed 0 baud; line = 0; min = 1; time = 0; -brkint -icrnl -imaxbel -opost -isig -icanon -iexten -echo (something is wrong) stty -F /dev/ttyUSB0 ispeed 38400 stty: /dev/ttyUSB0: unable to perform all requested operations But if I give an obv wrong value it doesn't complain. stty -F /dev/ttyUSB0 ispeed 3840 The dongle is a FTDI Chip TTL-232R-5V USB to TTL...


Group with more traffic than CAE?

Started by Anonymous in comp.arch.embedded1 year ago 2 replies

Hi This group has not much traffic Any recommendations for an alternative group? Cheers Klaus

Hi This group has not much traffic Any recommendations for an alternative group? Cheers Klaus


high voltage charge pump

Started by Hul Tytus in comp.arch.embedded1 year ago 4 replies

Anyone familiar with a high voltage charge pump designed as a step down power supply? The voltage is between 175 & 200. Numerous high...

Anyone familiar with a high voltage charge pump designed as a step down power supply? The voltage is between 175 & 200. Numerous high voltage versions exist using inductors, (Onsemi has one that is "self supplied" which is attractive) but not a one that works with just a capacitor. Are there any out there I've missed? Hul


gpsim segfaults when loading a .cod with stack in linmem.

Started by Johann Klammer in comp.arch.embedded1 year ago 1 reply
GDB

the version is gpsim-0.31.0 # (Dec 30 2019) the commandline was gdb --args gpsim -s ../pic/main.cod Here's a debug session: Program received...

the version is gpsim-0.31.0 # (Dec 30 2019) the commandline was gdb --args gpsim -s ../pic/main.cod Here's a debug session: Program received signal SIGSEGV, Segmentation fault. 0xb7e28020 in PicCodProgramFileType::read_symbols ( this=0xb7fa3b20 , cpu=0x8074b40) at cod.cc:559 559 cpu-> registers[value]-> new_name(b); p s $7 = 0x80680fa "\006_stack\002" p le


Numerical output from a single LED

Started by John Speth in comp.arch.embedded1 year ago 16 replies

I'm working on a project in which the hardware is already designed. The customer added a late stage requirement to output a numerical counter...

I'm working on a project in which the hardware is already designed. The customer added a late stage requirement to output a numerical counter value. The only output port is a single three-color (RGB) LED. Does anybody have any ideas how one might drive the LED to output a numerical value? The device is a single purpose hand held grocery labeler and we want to count labels dispensed. ...


A free version of Labview

Started by Martin Riddle in comp.arch.embedded1 year ago 8 replies

Release date is... November or early next year. But the LINX toolkit in interesting for the Raspberry PI Cheers

Release date is... November or early next year. But the LINX toolkit in interesting for the Raspberry PI Cheers


FOSDEM 2020 - Ada Developer Room - Sat 1 Feb 2020 - Brussels

Started by Dirk Craeynest in comp.arch.embedded1 year ago

----------------------------------------------------------------------- Ada-Belgium is pleased to announce its ...

----------------------------------------------------------------------- Ada-Belgium is pleased to announce its 10th Ada Developer Room at FOSDEM 2020 Ada at the Free and Open source Software Developers' European Meeting on Saturday 1 February 2020 Universit? Libre de Bruxelles (ULB), Solbosch Campus, Room AW1.125 Avenue...


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