Problemi con Hot Bed e Transistor June 01, 2018 08:39AM |
Registered: 6 years ago Posts: 10 |
Re: Problemi con Hot Bed e Transistor June 01, 2018 09:43AM |
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Re: Problemi con Hot Bed e Transistor June 01, 2018 10:09AM |
Registered: 6 years ago Posts: 10 |
Re: Problemi con Hot Bed e Transistor June 02, 2018 05:08AM |
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Re: Problemi con Hot Bed e Transistor June 02, 2018 05:40AM |
Registered: 6 years ago Posts: 10 |
Re: Problemi con Hot Bed e Transistor June 02, 2018 06:08AM |
Registered: 7 years ago Posts: 1,059 |
Quote
Traumflug
When I changed the default ver 1.3.1 MOSFET IRFZ44N with an IRF3703 with RDS(on) around 3-4mΩ , the new MOSFET temperature never exeeded 45C even with a very small heatsink, while with the IRFZ44N a big 10x5cm heatsink was needed and even then, temperatures of 100C-120C were experienced on the MOSFET. So for whomever still has the IRFZ44N as a heatbed switching MOSFET and experiences issues with high MOSFET temperatures, I would advise her to switch to IRLB 8743 (gen7 ver 1.4.1 suggestion) , IRF 3703, or any other MOSFET with a considerably low RDS(on)
Quote
Traumflug
Miller" can be seen in Fig. 6, too, and is the gate-source voltage where the flat part of the charge curve happens (above that the "Miller"-effect starts). This may give an indication of the minimum voltage required to drive that MOSFET.
Re: Problemi con Hot Bed e Transistor June 02, 2018 11:20AM |
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Re: Problemi con Hot Bed e Transistor June 02, 2018 11:41AM |
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Re: Problemi con Hot Bed e Transistor June 02, 2018 11:51AM |
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Re: Problemi con Hot Bed e Transistor June 02, 2018 11:57AM |
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Re: Problemi con Hot Bed e Transistor June 02, 2018 12:07PM |
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Re: Problemi con Hot Bed e Transistor June 02, 2018 12:15PM |
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Re: Problemi con Hot Bed e Transistor June 02, 2018 12:16PM |
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Re: Problemi con Hot Bed e Transistor June 07, 2018 10:09AM |
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Re: Problemi con Hot Bed e Transistor June 07, 2018 12:51PM |
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Re: Problemi con Hot Bed e Transistor June 07, 2018 12:56PM |
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Re: Problemi con Hot Bed e Transistor June 07, 2018 01:41PM |
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Re: Problemi con Hot Bed e Transistor June 09, 2018 05:38AM |
Registered: 7 years ago Posts: 1,059 |
#define BOARD_MKS_13 47 // MKS v1.3 or 1.4 (maybe higher)
#define MOTHERBOARD BOARD_MKS_13
/**************************************************************************************** * 47 * MKS 1.3 / 1.4 ****************************************************************************************/ //###CHIP #if DISABLED(__AVR_ATmega1280__) && DISABLED(__AVR_ATmega2560__) #error Oops! Make sure you have 'Arduino Mega' selected from the 'Tools -> Boards' menu. #endif //@@@ #define KNOWN_BOARD 1 //###BOARD_NAME #if DISABLED(BOARD_NAME) #define BOARD_NAME "MKS V1.3" #endif //@@@ //###X_AXIS #define ORIG_X_STEP_PIN 54 #define ORIG_X_DIR_PIN 55 #define ORIG_X_ENABLE_PIN 38 #define ORIG_X_CS_PIN 53 //###Y_AXIS #define ORIG_Y_STEP_PIN 60 #define ORIG_Y_DIR_PIN 61 #define ORIG_Y_ENABLE_PIN 56 #define ORIG_Y_CS_PIN 49 //###Z_AXIS #define ORIG_Z_STEP_PIN 46 #define ORIG_Z_DIR_PIN 48 #define ORIG_Z_ENABLE_PIN 62 #define ORIG_Z_CS_PIN 40 //###EXTRUDER_0 #define ORIG_E0_STEP_PIN 26 #define ORIG_E0_DIR_PIN 28 #define ORIG_E0_ENABLE_PIN 24 #define ORIG_E0_CS_PIN 42 #define ORIG_SOL0_PIN NoPin //###EXTRUDER_1 #define ORIG_E1_STEP_PIN 36 #define ORIG_E1_DIR_PIN 34 #define ORIG_E1_ENABLE_PIN 30 #define ORIG_E1_CS_PIN 44 #define ORIG_SOL1_PIN NoPin //###EXTRUDER_2 #define ORIG_E2_STEP_PIN NoPin #define ORIG_E2_DIR_PIN NoPin #define ORIG_E2_ENABLE_PIN NoPin #define ORIG_E2_CS_PIN NoPin #define ORIG_SOL2_PIN NoPin //###EXTRUDER_3 #define ORIG_E3_STEP_PIN NoPin #define ORIG_E3_DIR_PIN NoPin #define ORIG_E3_ENABLE_PIN NoPin #define ORIG_E3_CS_PIN NoPin #define ORIG_SOL3_PIN NoPin //###EXTRUDER_4 #define ORIG_E4_STEP_PIN NoPin #define ORIG_E4_DIR_PIN NoPin #define ORIG_E4_ENABLE_PIN NoPin #define ORIG_E4_CS_PIN NoPin #define ORIG_SOL4_PIN NoPin //###EXTRUDER_5 #define ORIG_E5_STEP_PIN NoPin #define ORIG_E5_DIR_PIN NoPin #define ORIG_E5_ENABLE_PIN NoPin #define ORIG_E5_CS_PIN NoPin #define ORIG_SOL5_PIN NoPin //###EXTRUDER_6 #define ORIG_E6_STEP_PIN NoPin #define ORIG_E6_DIR_PIN NoPin #define ORIG_E6_ENABLE_PIN NoPin #define ORIG_E6_CS_PIN NoPin #define ORIG_SOL6_PIN NoPin //###EXTRUDER_7 #define ORIG_E7_STEP_PIN NoPin #define ORIG_E7_DIR_PIN NoPin #define ORIG_E7_ENABLE_PIN NoPin #define ORIG_E7_CS_PIN NoPin #define ORIG_SOL7_PIN NoPin //###ENDSTOP #define ORIG_X_MIN_PIN 3 #define ORIG_X_MAX_PIN 2 #define ORIG_Y_MIN_PIN 14 #define ORIG_Y_MAX_PIN 15 #define ORIG_Z_MIN_PIN 18 #define ORIG_Z_MAX_PIN 19 #define ORIG_Z2_MIN_PIN NoPin #define ORIG_Z2_MAX_PIN NoPin #define ORIG_Z3_MIN_PIN NoPin #define ORIG_Z3_MAX_PIN NoPin #define ORIG_Z4_MIN_PIN NoPin #define ORIG_Z4_MAX_PIN NoPin #define ORIG_Z_PROBE_PIN NoPin //###SINGLE_ENDSTOP #define X_STOP_PIN NoPin #define Y_STOP_PIN NoPin #define Z_STOP_PIN NoPin
//###HEATER #define ORIG_HEATER_0_PIN 10 #define ORIG_HEATER_1_PIN 7 #define ORIG_HEATER_2_PIN NoPin #define ORIG_HEATER_3_PIN NoPin #define ORIG_HEATER_BED_PIN 8 #define ORIG_HEATER_CHAMBER_PIN NoPin #define ORIG_COOLER_PIN NoPin
//###TEMPERATURE #define ORIG_TEMP_0_PIN 13 #define ORIG_TEMP_1_PIN 15 #define ORIG_TEMP_2_PIN NoPin #define ORIG_TEMP_3_PIN NoPin #define ORIG_TEMP_BED_PIN 14 #define ORIG_TEMP_CHAMBER_PIN NoPin #define ORIG_TEMP_COOLER_PIN NoPin
//###FAN #define ORIG_FAN0_PIN 9 #define ORIG_FAN1_PIN NoPin #define ORIG_FAN2_PIN NoPin #define ORIG_FAN3_PIN NoPin
Re: Problemi con Hot Bed e Transistor June 09, 2018 05:50AM |
Registered: 7 years ago Posts: 1,059 |
#define BOARD_MKS_13 47
/** * Marlin 3D Printer Firmware * Copyright (C) 2016 MarlinFirmware [https://github.com/MarlinFirmware/Marlin] * * Based on Sprinter and grbl. * Copyright (C) 2011 Camiel Gubbels / Erik van der Zalm * * This program is free software: you can redistribute it and/or modify * it under the terms of the GNU General Public License as published by * the Free Software Foundation, either version 3 of the License, or * (at your option) any later version. * * This program is distributed in the hope that it will be useful, * but WITHOUT ANY WARRANTY; without even the implied warranty of * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the * GNU General Public License for more details. * * You should have received a copy of the GNU General Public License * along with this program. If not, see [www.gnu.org]. * */ /** * Arduino Mega with RAMPS v1.4 adjusted pin assignments * * MKS v1.3 (Extruder, Fan, Bed) * MKS v1.3 (Extruder, Extruder, Fan, Bed) * MKS v1.4 (Extruder, Fan, Bed) * MKS v1.4 (Extruder, Extruder, Fan, Bed) */ #if HOTENDS > 2 || E_STEPPERS > 2 #error "MKS 1.3/1.4 supports up to 2 hotends / E-steppers. Comment out this line to continue." #endif #define BOARD_NAME "MKS > v1.3"
// // Heaters / Fans // // Power outputs EFBF or EFBE #define MOSFET_D_PIN 7
// // PSU / SERVO // // If POWER_SUPPLY is specified, always hijack Servo 3 // #if POWER_SUPPLY > 0 #define SERVO3_PIN -1 #define PS_ON_PIN 4 #endif #include "pins_RAMPS.h" #endif
Re: Problemi con Hot Bed e Transistor June 11, 2018 12:09PM |
Registered: 6 years ago Posts: 10 |
Re: Problemi con Hot Bed e Transistor June 11, 2018 01:05PM |
Registered: 7 years ago Posts: 1,059 |