BLTouch Manual
User Manual:
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BLTouch : Auto Bed Leveling Sensor for 3D Printers
■ Smart V3.0 Highlights
■ Smart V2.0 and later versions highlights
Logic Voltage Free : 3.3V / 5V logic voltage free(default)
Blue & Red LED : Blue and Red LED for checking wiring defects.
Long Stroke : The stroke becomes 1.6mm longer than the
Engineering plastic Push-pin : Engineering plastic push-pin can be
previous stroke
bent more easily than aluminum pins so that engineering plastic pushpin can be recovered well and the device can be protected.
BLTouch – Smart
BLTouch
Center Of PWM
Instruction
(Available PWM Rage ±20)
Push-pin Down(deploy)
Alarm Release & Touch SW
V3.0
G-code
x : Servo Pin or No.
Marlin / Duet
Repetier
Smoothieware
650 us (10°)
M280 Px S10
M340 Px S650
M280 S3.3
1165 us (60°)
M280 Px S60
M340 Px S1165
M280 S5.88
Push-pin Up(Stow)
1475 us (90°)
M280 Px S90
M340 Px S1475
M280 S7.43
Self-test
1780 us (120°)
M280 Px S120
M340 Px S1780
M280 S8.99
5V Logic Zmin
1985 us (140°)
M280 Px S140
M340 Px S1985
M280 S10.01
2090 us (150°)
M280 Px S150
M340 Px S2090
M280 S10.53
2190 us (160°)
M280 Px S160
M340 Px S2190
M280 S11.05
Mode(M119)
(option : Only for unusual case)
Logic voltage Free Zmin
(default : open drain)
Alarm Release & Push-pin UP
※ Depending on your board, you can need to adjust the PWM range or Duty cycle.
※ 5V Logic Zmin(140°) for unusual board : H Signal is very weak( Not recommended for general board)
BLTouch CAD Dimension
Specification
Voltage / Current
4.8 ~ 5.1 V
Current
15mA
Maximum(Peak)
300mA
Z Probe Output
Logic Free (Open Drain : default) or 5V
Open Drain VDS / ID
Max VDS = 5V / Max ID = 300mA
PCB / Soldering
OSP / Lead Free
Cable Length
150±5 mm (for retail)
Weight
0.35oz (10g)
Wiring
3Pin : Brown (GND), Red (+5V)
Orange (control signal)
2Pin : Black(GND) White (Zmin)
Case & Push-pin
Polycarbonate (PC)
※ Additional power supply may be needed in case which your board does not supply enough amperage.
※ Electronic devices can be damaged or even destroyed if connected to the wrong side polarity.
[The wrong terminal connect to 5V(+) and GND(-)]
※ Set Zmin pull-up on your firmware when using Logic Free (In most cases, it is already set up)
※ Depending on your type of 3D printer, you may need to remove or add some parts of the board.
※ Selling price and specifications are subject to change without prior notice.
www.antclabs.com
www.bltouch.com
PayPal Account & Email : antclabs@gmail.com
■ Signal Timing Diagram
■ Blue & Red LED (Please check wiring defects with Blue and Red LED(Smart V2.0 and later).
※ Red wiring defect : When the BLTouch was disconnected and reconnected during normal operation. Unlike previous versions, it does not perform self-test even if
wiring defects occur during printing.
■ Wiring : Soldering and firmware update might be needed in rare case
I can find a servo pin on my board.
☜ click here
RAMPS1.3/1.4, MKS-Gen V1.3, MKS-Base V1.4, etc.
I can not find any Servo pin on my board.
☜ click here
MKS-Base V1.2, mini-Rambo, etc.
I can not find Servo Pin on my board and
☜ click here
#define SERVO0_PIN is not included in pins_YourMotherboard.h.
Sanguinololu1.3a, Melzi , Ender-3, Anet, FlashForge, Azteeg X3, etc.
※ Depending on your type of 3D printer, you may need to remove or add some parts of the board.
32bit board
☜ click here
Smoothieboard, MKS-Sbase, BBP1S, Alligator, AZSMZ, STEVAL-3DP001V1, Duet, etc.
■ e.g. Slic3r
Insert the following G-code into Slic3r or Cura
www.antclabs.com
www.bltouch.com
PayPal Account & Email : antclabs@gmail.com
■ Setting (e.g. Marlin firmware)
Please refer to other auto bed leveling setting documents ( Youtube or G+, etc. ).
Troubleshooting : https://igg.me/at/BLTouch-C/ts/11834379
Marlin-bugfix-2.0.x Setting
https://github.com/MarlinFirmware/Marlin/archive/bugfix-2.0.x.zip
Step 1 : Copy the file below and overwrite at the Marlin folder. <== e.g. default
Marlin-bugfix-2.0.x\config\default\Configuration.h
Marlin-bugfix-2.0.x\config\default\Configuration_adv.h
Step 2 : Look at the Configuration.h at your previous firmware and edit Configuration.h at Marlin.
Step 3 : Check your 3D printer works well.
Step 4 : Please install your BLTouch.
Step 5 : Edit Configuration.h and Configuration_adv.h like below.
■ Configuration.h
//============================== Endstop Settings ===========================
#define USE_ZMIN_PLUG // a Z probe
#define ENDSTOPPULLUPS
// BLTouch Smart V3.0 and Later
#define ENDSTOP_INTERRUPTS_FEATURE
//============================= Z Probe Options =============================
#define Z_MIN_PROBE_USES_Z_MIN_ENDSTOP_PIN
#define BLTOUCH
#if ENABLED(BLTOUCH)
#define BLTOUCH_V3
#if ENABLED(BLTOUCH_V3)
//#define BLTOUCH_FORCE_5V_MODE
//for 5V logic
#define BLTOUCH_FORCE_OPEN_DRAIN_MODE
#endif
#endif
#define
#define
#define
#define
#define
#define
#define
#define
// default : Logic Voltage Free
PROBING_HEATERS_OFF
// *option
PROBING_FANS_OFF
// *option
X_PROBE_OFFSET_FROM_EXTRUDER 0
//Depend on your BLTouch installation value
Y_PROBE_OFFSET_FROM_EXTRUDER -22
//Depend on your BLTouch installation value
Z_PROBE_OFFSET_FROM_EXTRUDER -2.35 //Depend on your BLTouch installation value
MIN_PROBE_EDGE 20
Z_CLEARANCE_DEPLOY_PROBE
15
// set up at least 15
Z_CLEARANCE_BETWEEN_PROBES 10
// set up at least 10
//=============================== Bed Leveling ==============================
// Choose a line of below lines and remove // at the start of the line
//#define AUTO_BED_LEVELING_3POINT
//#define AUTO_BED_LEVELING_LINEAR
#define AUTO_BED_LEVELING_BILINEAR
//#define AUTO_BED_LEVELING_UBL
//#define MESH_BED_LEVELING
//=========================== Extra Featurest ================================
#define NUM_SERVOS 3
// set up at least 1
#define SERVO_DELAY { 300, 300, 300 }
Marlin 1.1.x(1.1.9) Setting
https://github.com/MarlinFirmware/Marlin/archive/1.1.x.zip
Step 1 : Copy the file below and overwrite at the Marlin folder. <== e.g. Delta
Marlin\example_configurations\delta\generic\Configuration.h
Marlin\example_configurations\delta\generic\Configuration_adv.h
Step 2 : Look at the Configuration.h at your previous firmware and edit Configuration.h at Marlin 1.1.x
Step 3 : Check your 3D printer works well.
Step 4 : Please install your BLTouch.
Step 5 : Edit Configuration.h and Configuration_adv.h like below.
■ Configuration.h
//============================== Endstop Settings ===========================
#define USE_ZMIN_PLUG // a Z probe
#define ENDSTOPPULLUPS
// BLTouch Smart V3.0 and Later
#define ENDSTOP_INTERRUPTS_FEATURE
//============================= Z Probe Options =============================
#define Z_MIN_PROBE_USES_Z_MIN_ENDSTOP_PIN
//#define Z_MIN_PROBE_ENDSTOP
//#define FIX_MOUNTED_PROBE
#define BLTOUCH
#if ENABLED(BLTOUCH)
#define BLTOUCH_DELAY 100
// *option
#endif
#define PROBING_HEATERS_OFF
// *option
#define PROBING_FANS_OFF
// *option
#define X_PROBE_OFFSET_FROM_EXTRUDER 0
//Depend on your BLTouch installation value
#define Y_PROBE_OFFSET_FROM_EXTRUDER -22
//Depend on your BLTouch installation value
#define Z_PROBE_OFFSET_FROM_EXTRUDER -2.35 //Depend on your BLTouch installation value
#define MIN_PROBE_EDGE 20
//#define Z_PROBE_ALLEN_KEY
#define Z_CLEARANCE_DEPLOY_PROBE
15
// set up at least 15
#define Z_CLEARANCE_BETWEEN_PROBES 10
// set up at least 10
//=============================== Bed Leveling ==============================
// Choose a line of below lines and remove // at the start of the line
//#define AUTO_BED_LEVELING_3POINT
//#define AUTO_BED_LEVELING_LINEAR
#define AUTO_BED_LEVELING_BILINEAR
//#define AUTO_BED_LEVELING_UBL
//#define MESH_BED_LEVELING
//============================= Additional Features ===========================
#define EEPROM_SETTINGS // Enable for M500 and M501 command
//=========================== Extra Featurest ================================
#define NUM_SERVOS 3
// set up at least 1
#define SERVO_DELAY { 300, 300, 300 }
Previous Versions before Marlin RC7
■ Configuration.h
//============================= Mechanical Settings =========================
const bool Z_MIN_ENDSTOP_INVERTING = false;
//============================= Z Probe Options ============================
//#define Z_MIN_PROBE_ENDSTOP
// *RC4 ~ RC6
#define Z_MIN_PROBE_USES_Z_MIN_ENDSTOP_PIN
// *RC4 ~ RC6
//============================ Bed Auto Leveling ============================
#define AUTO_BED_LEVELING_FEATURE
#define X_PROBE_OFFSET_FROM_EXTRUDER 20
//Your BLTouch X_PROBE_OFFSET_FROM_EXTRUDE
#define Y_PROBE_OFFSET_FROM_EXTRUDER -20
//Your BLTouch Y_PROBE_OFFSET_FROM_EXTRUDE
#define Z_PROBE_OFFSET_FROM_EXTRUDER -1.0
//Your BLTouch Z_PROBE_OFFSET_FROM_EXTRUDE
#define Z_SAFE_HOMING
//============================ R/C SERVO support ==========================
#define NUM_SERVOS 3
#define SERVO_ENDSTOP_ANGLES {{0,0}, {0,0}, {10,90}}
// 10=deploy, 90=retract
//#define DEACTIVATE_SERVOS_AFTER_MOVE
If you want more additional information about the other versions, please visit our website, www.antclabs.com
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