Vzhledem k tomu, ze se casto pouzivaji ruzne termistory, nez standartni 100k epcosy apod. je potreba resim vlastni prevodni tabulku pro teploty. Nejjednodusi pristup jak ziskat vhodnou tabulku mi prisel nasleduji: 1) zjistit si co mam za termistor, idealne znat beta hodnotu (pokud mate pouze prevodni tabulku, tak postup je komplikovanejsi), pro priklad: MF58 100k NTC termistor, beta = 3950, pro t=25C => R=100000u 2) vzit python skript na vypocet, napr [sourceforge.net] 3) zmenit puvodni hodnoty na nase def main(argv): r0 = 100000; t0 = 25; beta = 3950; r1 = 0; r2 = 4700; (r1 a r2 nastavuji na defaultni hodnoty, pripadne dalsi info na wiki [reprap.org]) 4) Spustete skript. Bud na vlastnim pocitaci, pripadne muzete online, napr zde [www.compileonline.com] 5) mate prevodni tabulku, kterou muzete dat do firmwaru arduina, kde jeste nezapomente zmenit nastaveni, ze pouzivate custom thermistor table a jeji cislo // Thermistor lookup table for RepRap Temperature Sensor Boards (http://make.rrrf.org/ts) // Made with createTemperatureLookup.py (http://svn.reprap.org/trunk/reprap/firmware/Arduino/utilities/createTemperatureLookup.py) // ./createTemperatureLookup.py --r0=100000 --t0=25 --r1=0 --r2=4700 --beta=3950 --max-adc=1023 // r0: 100000 // t0: 25 // r1: 0 // r2: 4700 // beta: 3950 // max adc: 1023 #define NUMTEMPS 20 short temptable[NUMTEMPS][2] = { {1, 938}, {54, 267}, {107, 217}, {160, 191}, {213, 172}, {266, 158}, {319, 147}, {372, 137}, {425, 127}, {478, 119}, {531, 111}, {584, 103}, {637, 96}, {690, 88}, {743, 80}, {796, 72}, {849, 62}, {902, 50}, {955, 35}, {1008, 2} https://reprap.org/forum/read.php?331,290108,290108#msg-290108 Tue, 11 Aug 2026 03:52:15 -0400 Phorum 5.2.23 https://reprap.org/forum/read.php?331,290108,371703#msg-371703 https://reprap.org/forum/read.php?331,290108,371703#msg-371703 hanysl FAQ & HOW-TO a odkazy Wed, 18 Jun 2014 15:50:21 -0400 https://reprap.org/forum/read.php?331,290108,371635#msg-371635 https://reprap.org/forum/read.php?331,290108,371635#msg-371635 // R0 = 100000 Ohm
// T0 = 25 °C
// Beta = 3950
// R1 = 0 Ohm
// R2 = 4700 Ohm

No a kdyz to vygeneruju zde : [nathan7.eu]
prepisu , a termistor ukazuje nesmysly, 127 °C a ma byt cca 24°C ... jen by me zajimalo co delam spatne...

jeste pro jistotu jestli to delam dobre viz obrazek...]]> paklic FAQ & HOW-TO a odkazy Wed, 18 Jun 2014 13:43:25 -0400 https://reprap.org/forum/read.php?331,290108,290137#msg-290137 https://reprap.org/forum/read.php?331,290108,290137#msg-290137 Bajn FAQ & HOW-TO a odkazy Mon, 06 Jan 2014 08:39:19 -0500 https://reprap.org/forum/read.php?331,290108,290130#msg-290130 https://reprap.org/forum/read.php?331,290108,290130#msg-290130 nathan7.eu]]]> majkl FAQ & HOW-TO a odkazy Mon, 06 Jan 2014 08:21:42 -0500 https://reprap.org/forum/read.php?331,290108,290108#msg-290108 https://reprap.org/forum/read.php?331,290108,290108#msg-290108 Nejjednodusi pristup jak ziskat vhodnou tabulku mi prisel nasleduji:
1) zjistit si co mam za termistor, idealne znat beta hodnotu (pokud mate pouze prevodni tabulku, tak postup je komplikovanejsi), pro priklad: MF58 100k NTC termistor, beta = 3950, pro t=25C => R=100000u
2) vzit python skript na vypocet, napr [sourceforge.net]
3) zmenit puvodni hodnoty na nase
def main(argv):

r0 = 100000;
t0 = 25;
beta = 3950;
r1 = 0;
r2 = 4700;

(r1 a r2 nastavuji na defaultni hodnoty, pripadne dalsi info na wiki [reprap.org])
4) Spustete skript. Bud na vlastnim pocitaci, pripadne muzete online, napr zde [www.compileonline.com]

5) mate prevodni tabulku, kterou muzete dat do firmwaru arduina, kde jeste nezapomente zmenit nastaveni, ze pouzivate custom thermistor table a jeji cislo
// Thermistor lookup table for RepRap Temperature Sensor Boards (http://make.rrrf.org/ts)
// Made with createTemperatureLookup.py (http://svn.reprap.org/trunk/reprap/firmware/Arduino/utilities/createTemperatureLookup.py)
// ./createTemperatureLookup.py --r0=100000 --t0=25 --r1=0 --r2=4700 --beta=3950 --max-adc=1023
// r0: 100000
// t0: 25
// r1: 0
// r2: 4700
// beta: 3950
// max adc: 1023
#define NUMTEMPS 20
short temptable[NUMTEMPS][2] = {
{1, 938},
{54, 267},
{107, 217},
{160, 191},
{213, 172},
{266, 158},
{319, 147},
{372, 137},
{425, 127},
{478, 119},
{531, 111},
{584, 103},
{637, 96},
{690, 88},
{743, 80},
{796, 72},
{849, 62},
{902, 50},
{955, 35},
{1008, 2}]]> Bajn FAQ & HOW-TO a odkazy Mon, 06 Jan 2014 07:02:24 -0500