Hardware

Printer

Chassis

Tenlog TL-3D Pro

Machine Dimensions	Width	Depth	Height
Machine Size	590mm	520mm	760mm
Build Volume	300mm	300mm	350mm

No mechanical modification on the printer except fitting of the screw domes for the new motherboard.

Electronic

Motherboard

BIGTREETECH OCTOPUS Pro V1.0.1

CPU

STM32F429ZG

Stepper driver

The TMC2209 has only Step/Dir mode and UART, NO SPI.
Therefor the pins below the StepDriver are configured in UART mode:

oIoo
oIoo
oooo

The output voltage of the StepDriver should be the same as the supply voltage.
Since the TCM2209 is not supporting other output voltages, the jumper will use the 24V of the board:

o==

The TMC2209 supports StallGuard, which is connected to the diag pin.
The StallGuard is overwriting the endstops, therefor they will not be used:

oooooooo
oooooooo

Fans

The Fans are all 24V therefor the jumpers will bridge the last pins:

oo  5V
oo  12V
==  24V

PT100 DIP Switch

The Tenlog 3D-Pro is using PT100 temperature sensors.
Therefor all dip switches will be set to ON (which was default on my board).

Power supply

To avoid powering the board via USB,
the Power jumper in the center of the board needs to me removed.
For installation and debugging I will keep it connected for now,
But in production I need to remove the jumper!

BLTouch

The BLTouch will be connected the flowing way:

ooooo
||||'-- white  [OUT] \ Sensor     > PB7
|||'--- black  [GND] /            x N/C
||'---- yellow [IN]  \            > PB6
|'----- red    [+5V]  | Controll  > 5VDC
'------ blue   [GND] /            > GND

sub-D (DE-15)

E1/E2 Pinout

        Female               Male
   ,---------------.   ,---------------.
 5 \   o o o o o   / 1 \   * * * * *   / 5
10  \   o o o o o /  6  \   * * * * * / 10
15   \ o o o o o /  11   \ * * * * * /  15
      '---------'         '---------'

🟩	Pin	Function		🟩	Pin	Function
✅	1	E 3 (C2)		✅	3	E 1 (C1)
✅	6	FZ -		⬛	8	LED +
✅	2	E 4 (C2)		✅	14	FC, FZ, H +
✅	7	FC -		⬛	13	N/C
✅	9	DJ		✅	4	E 2 (C1)
🔀	10	H -		✅	5	H -
✅	11	RH		✅	15	FC, FZ, H +
✅	12	DJ, RH, LED -

Function	Pins	Explanation
FZ	6, 14, 15	Hot-End Cooling (red/black)
FC	7, 14, 15	Part Cooling (yellow/blue)
RH	11, 12	Temp Sensor
DJ	9, 12	Filament Run-Out Sensor
E	1, 2, 3, 4	Stepper
H	5, 10, 14, 15	Heater
LED	8, 12	Blue LED

Fans

Seems like all fans can be connected directly.

Housing Fans

Use the 2 extra fan plugs (Fan4 & Fan5) in Controller Fan Mode.
This disables the fans if there is no driver or MOSFETs in use.

Firmware

Stepper

Plug	Driver	Axis
M0	Driver 0	X1
M1	Driver 1	Y
M2.1/M2.2	Driver 2	Z1
M3	Driver 3	Z2
M4	Driver 4	E0
M5	Driver 5	E1
M6	Driver 6	X2
M7	Driver 7	NC

Endstops/Filament

Port	Plug	Axis	Mod
PG6	Stop 0	X1	Org:PSG > New:PGS
PG9	Stop 1	Y	Org:PSG > New:PGS
PG10	Stop 2	Z1	Org:PSG > New:PGS
PG11	Stop 3	Z2	Org:PSG > New:PGS
PG12	Stop 4	E0	E1 sub-D 9
PG13	Stop 5	E1	E2 sub-D 9
PG14	Stop 6	X2	Org:PSG > New:PGS
PG15	Stop 7	NC

Fans

Port	Plug	Fan
PA8	FAN0	E0 Part Cooling Fan
PE5	FAN1	E1 Part Cooling Fan
PD12	FAN2	E0 Hot-End Cooling Fan
PD13	FAN3	E1 Hot-End Cooling Fan
PD14	FAN4	Housing Fan 1
PD15	FAN5	Housing Fan 2

Hot-Ends

Port	Plug	Device
PA1	Heated Bed	Bed
PA2	HE0	E1
PA3	HE1	E2
PB10	HE2	N/C
PB11	HE3	Casing Light

Buffers

Increased all buffers to the max to reduce lags in WiFi data transfer.
Enabled XON/XOFF control characters.

#define BLOCK_BUFFER_SIZE 32
#define MAX_CMD_SIZE 96
#define BUFSIZE 32
#define TX_BUFFER_SIZE 256
#define RX_BUFFER_SIZE 2048
#define SERIAL_XON_XOFF

Calibration

PID Auto Tune

Bed

I run a PID Auto Tune with 9 cycles on the bed:

M303 C9 S60 D1 U1 E-1

With the new values the configuration is:

#define DEFAULT_bedKp 136.38
#define DEFAULT_bedKi 25.83
#define DEFAULT_bedKd 480.06

Hotends

I run a PID Auto Tune with 9 cycles on both hotends:

M303 C9 S210 D1 U1 E0
M303 C9 S210 D1 U1 E1

With the new values the configuration is:

#define DEFAULT_Kp_LIST { 26.65, 24.61 }
#define DEFAULT_Ki_LIST {  3.00,  2.65 }
#define DEFAULT_Kd_LIST { 59.16, 57.10 }

Step Driver Current

TMC2209

$I_{RMS}=\frac{325\textup{mV}}{R_{sense}+20\textup{m}\Omega}\cdot\frac{1}{\sqrt{2}}\cdot\frac{V_{ref}}{2.5\textup{V}}$

Model	Length	Current	Resistance	Inductance	H.Torque	D.Torque
17HS2408	28 mm	0.6 A	8 Ω	10 mH	12 N·cm	1.6 N·cm
17HS3401	34 mm	1.3 A	2.4 Ω	2.8 mH	28 N·cm	1.6 N·cm
17HS3410	34 mm	1.7 A	1.2 Ω	1.8 mH	28 N·cm	1.6 N·cm
17HS3403	34 mm	0.4 A	30 Ω	35 mH	28 N·cm	1.6 N·cm
17HS4401	40 mm	1.7 A	1.5 Ω	2.8 mH	40 N·cm	2.2 N·cm
17HS4402	40 mm	1.3 A	2.5 Ω	5 mH	40 N·cm	2.2 N·cm
17HS8401	48 mm	1.7 A	1.8 Ω	3.2 mH	52 N·cm	2.6 N·cm
17HS8402	48 mm	1.3 A	3.2 Ω	5.5 mH	52 N·cm	2.6 N·cm
17HS8403	48 mm	2.3 A	1.2 Ω	1.6 mH	46 N·cm	2.6 N·cm

• X- & Z-Axis
  • 42-40 Motor (~3.2 Ω)
  • 1.3 A (- 10%) => 1170
• Y- & E-Axis
  • 42-48 Motor (~3.2 Ω)
  • 1.3 A (- 10%) => 1170

UBL

1. Level bed manually on all 4 corners
2. Run

   G0 Z10
   G30 X154 Y154
   

3. Read out result and calculate
   $Z_{M851}=Z_{M851}-Z_{Probe}{\color{Gray}-Z{Paper}}$
4. Write probe offset with

   M851 Z#.##
   

5. Run UBL

   M420 S0   ; disable bed leveling
   G28       ; home all axes
   M155 S30  ; reduce temperature reporting rate to reduce output pollution
   M190 S60  ; wait for the bed to get up to temperature
   G4 S60    ; wait another 1 min for the bed to reach temperature
   G29 P0    ; clear mesh
   G29 P1    ; automatically populate mesh with all reachable points
   G29 P3    ; infer the rest of the mesh values
   G29 P3    ; infer the rest of the mesh values again
   M420 S1 V ; enabled leveling and report the new mesh
   M500      ; save the new mesh to EEPROM
   M155 S3   ; reset temperature reporting
   M140 S0   ; cooling down the bed
   

6. Correct whole mesh with

   G29 P6 C#.##