4 Axis TB6560 CNC Stepper Motor Driver Board Controller
NOTE: This stepper driver board is HIGHLY experimental within the reprap community ( less than 3 known users, none 100% satisfied with their configuration yet)
NOTE: When I contacted ebay seller about the faulty driver board (they delayed sending me replacement) he told he they had received 3 faulty boards at once and were asking which one is mine
TIP: the model commonly used appears to be a HY-TB4DV-M.
The 'TB' means it uses the 6560 chip ( TA means the TA8435 chip, which is also used on a similar board). The '4' means the number of channels. The -M and -N boards have different physical layouts, and may be different revisions of the same basic design, not sure?
|Input Power||12 - 36V DC Note that many forums state that this board dies in smoke if powered over 24V|
|Stepper motor drive current||1.5A - 3A/phase|
|Drive type||Double-pole constant flow PWM actuation output|
|Compatible Stepper motors||2 or 4 phase, 4,6 or 8 lead stepper motors, 3A max.|
|Dimensions||18 * 11 * 4 cm (L*W*H)|
The pinount in the provided document was wrong (completely) so I traced the pcb for real values and here they are:
|10||(ACK)||INPUT (limit switch)|
|11||(BUSY)||INPUT (limit switch)|
|12||(PE)||INUPT (limit switch)|
|13||(SEL)||INPUT (limit/stop switch)|
You may find that the fourth stepper driver enable pin is not available on the DB25 connector. If so, it is on the DB15 at pin 1.
ALTERNATE: In some revisions at least, the enable pin for the fourth driver/channel is *SHARED* with the enable pin for the third channel ( assuming you wire them in the order XYZE, it means that your Z and E drivers share their enable line ).
Note: The enable pin's are pulled high so if you do not drive them all drivers are enabled by default.
|Current Setting||1||2||Decay Mode Settings||3||4||MicroStep Settings||5||6|
The currently recommended settings for the DIP switches are:
X & Y axis: 25% Current, Slow Decay Mode, No Microstepping ( ie use Microstepping value of 1 ) ie: OFF,OFF,OFF,OFF,ON,ON.
Z: To-be-determined. Currently we believe the required power setting may need to be higher than X& Ym, but we arent sure. No Microstepping. perhaps: OFF,ON,OFF,OFF,ON,ON.?
Extruder: To-be-determined. No Microstepping.
NOTES: You need to avoid microstepping unless you have the absolute latest firmware, because with *lots* of microstepping interrupts on all axes, you will get packet loss on the USB-Serial Host communications. For now, the fix is to avoid microstepping. It makes it easier to debug lost steps, etc anyway.
Signal waveform and timing:
The attached image seems to imply that there is a requirement to have the "step" pin pulled low while the direction pin undergoes a change. It also seems to imply that there should be a quiescient period before and after the change labeled "2C". A is the pulse width, B is the inter-pulse width, and 'C' is the required quiensent time before and after a direction change. The minimum values for A, B, and C are not known at this time, but may possibly be calculated experimentally. please update the wiki page if you have more information on this.