TMC2300-IOT-REF - Remote controlled Stepper Motor - Getting your motor running

RE: TMC2300-IOT-REF - Remote controlled Stepper Motor - Getting your motor running

Workshopshed — Mon, 29 Mar 2021 17:53:21 GMT

I managed to get things working by using the data only USB cable and battery along with some active cooling (me periodically blowing on the board). But the key issue was that the slave address needs to be configured.

https://www.element14.com/community/groups/roadtest/blog/2021/03/29/tmc2300-iot-ref-

Note that setting the current to 10 and running the motor did not make the overheating issue go away.

RE: TMC2300-IOT-REF - Remote controlled Stepper Motor - Getting your motor running

robertogp — Wed, 24 Feb 2021 11:26:19 GMT

In my case, the regulator is burnt. No 3.3v voltage.

Several people seem to have experienced the same problem.

The datasheet specifies this:

START WITH POWER SUPPLY OFF!

The voltage source can be supplied by both the USB and the battery ... So what does this mean exactly?

Or is it related to the enable pin?

RE: TMC2300-IOT-REF - Remote controlled Stepper Motor - Getting your motor running

robertogp — Tue, 23 Feb 2021 18:19:18 GMT

I played with the card, plugging and unplugging the battery and the USB cable to measure the current.

Fumes have appeared near the connector battery , some components were very hot !!! . I unplugged immediately.

But now the components are very hot every time I want to power it !!! (The motor is still rotating)

What happened ???

RE: TMC2300-IOT-REF - Remote controlled Stepper Motor - Getting your motor running

robertogp — Tue, 23 Feb 2021 18:06:47 GMT

But it seems that current setting is not working !

Gildas

RE: TMC2300-IOT-REF - Remote controlled Stepper Motor - Getting your motor running

robertogp — Tue, 23 Feb 2021 17:14:03 GMT

Hello,

I made a small test code by just simplifying the Blynk test code from Trinamic.

I have removed all blynk references and keep a function to set the current.

The motion is given with dir and step pins.

It works ok .

To test it, load trinamic Blynk code , keep the joined files and replace the main file code with this code :

[embed:dc8ab71f-3b98-42d9-b0f6-e21e02a0f8e2:3ef06e6b-9b7d-4651-b12d-db8be7f5e991:type=c_cpp&text=%23include+%22include%2FFunctions.h%22%0A%23include+%22include%2FTMC2300.h%22%0A%23include+%22include%2FCRC.h%22%0Aint++tmc_current%3D20%3B%0Aunsigned+long+memoMillis%3D0%3B%0Aint+pin_enable%3D32+%3B%0Aint+pin_step++%3D21+%3B%0Aint+pin_dir+++%3D22+%3B%0Aint+pin_led+++%3D18+%3B%0Aint+sec%3D0%3B%0A%0A%2F%2F******************************************************************************+%0Avoid+TMC2300_current%28int+currentInt+%29++%7B++Serial.print%28%22New+MaxCurrent+set%3A+%22%29%3B++Serial.println%28currentInt%29%3B%0A++uint32_t+value+%3D+1+%3C%3C+TMC2300_IHOLDDELAY_SHIFT%0A+++++++++++++++++%7C+%28%28currentInt+%3C%3C+TMC2300_IRUN_SHIFT%29+%26+TMC2300_IRUN_MASK%29%0A+++++++++++++++++%7C+8+%3C%3C+TMC2300_IHOLD_SHIFT%3B%0A++tmc2300_writeInt%28TMC2300_IHOLD_IRUN%2C+value%29%3B%7D%0A%2F%2F******************************************************************************+%0Avoid+setup%28%29%7B%0A++Serial.begin%28115200%29%3B+++++%2F%2F+Debug+console%0A++Serial1.begin%28115200%29%3B++++%2F%2F+TMC2300+IC+UART+connection%0A++pinMode%28pin_enable%2C+OUTPUT%29%3B++digitalWrite%28pin_enable%2CLOW%29+%3B+%0A++pinMode%28pin_step++%2C+OUTPUT%29%3B++digitalWrite%28pin_step%2CLOW%29+%3B+%0A++pinMode%28pin_dir+++%2C+OUTPUT%29%3B++digitalWrite%28pin_dir%2CLOW%29+%3B+%0A++pinMode%28pin_led+++%2C+OUTPUT%29%3B++digitalWrite%28pin_led%2CHIGH%29+%3B+%0A++Serial.println%28%22----+tmc2300+----%22%29%3B%0A++tmc_fillCRC8Table%280x07%2C+true%2C+0%29%3B+++++%2F%2F+Initialize+CRC+calculation+for+TMC2300+UART+datagrams%0A++TMC2300_current%28tmc_current%29%3B%0A++delay%281000%29%3B+Serial.println%28%22GO+%21%22%29%3B%0A++digitalWrite%2832%2CHIGH%29%3B%0A%7D%0A%2F%2F******************************************************************************+%0Avoid+loop%28%29%7B%0A+++if+%28+%28millis%28%29-memoMillis%29%3E1000+%29+%7B+memoMillis%3Dmillis%28%29%3B+%0A+++++++++Serial.println%28%22led%22%29%3B+%0A+++++++++digitalWrite%28pin_led%2C%21digitalRead%28pin_led%29%29%3B+%0A+++++++++tmc2300_writeInt%28TMC2300_CHOPCONF%2C+0x14008001%29%3B++%2F%2F+Re-write+the+CHOPCONF+register+periodically%0A+++++++++sec%2B%3D1%3B+%0A+++++++++if+%28sec%3E5%29+%7B+sec%3D0+%3B+Serial.println%28%22---dir%22%29%3B+digitalWrite%28pin_dir%2C%21digitalRead%28pin_dir%29%29%3B+%7D++%7D%0A+++delay%281%29%3B+++digitalWrite%28pin_step%2C+HIGH%29%3B+%0A+++delay%281%29%3B+++digitalWrite%28pin_step%2C+LOW%29%3B+%0A%7D%0A%2F%2F******************************************************************************]

I wonder why it is necessary to re-write CHOPCONF register periodically ?

Gildas

RE: TMC2300-IOT-REF - Remote controlled Stepper Motor - Getting your motor running

navadeepganeshu — Sat, 20 Feb 2021 15:40:59 GMT

Had any luck with this thing?

Looks like the motor to board connectors are not aligned and are alternative in order. Yellow - Red - Orange - Brown should be the right order as per numbering in the board.

[View:/resized-image/__size/291x290/__key/commentfiles/f7d226abd59f475c9d224a79e3f0ec07-b6202a31-8a48-4fde-aa01-d95319fb2031/contentimage_5F00_207334.png:291:290][View:/resized-image/__size/346x166/__key/commentfiles/f7d226abd59f475c9d224a79e3f0ec07-b6202a31-8a48-4fde-aa01-d95319fb2031/contentimage_5F00_207335.png:346:166]

I tried the default order and by swapping it also. The motor is just making a buzzing sound when powered with USB only, Nothing with only battery(18650, 3.7V) and the TP4054ST25P(U2) gets overheated when powered with both USB and battery with no responses from the motor.

Anything to do with firmware/ operating modes of TMC2300? I still doubt[View:/resized-image/__size/16x16/__key/commentfiles/f7d226abd59f475c9d224a79e3f0ec07-b6202a31-8a48-4fde-aa01-d95319fb2031/contentimage_5F00_53.png:16:16]

RE: TMC2300-IOT-REF - Remote controlled Stepper Motor - Getting your motor running

Workshopshed — Thu, 11 Feb 2021 20:35:29 GMT

I've reflashed the ESP32 successfully with the following. So I'm fairly confident that it is not the ESP32 code that is causing any issue.

[embed:dc8ab71f-3b98-42d9-b0f6-e21e02a0f8e2:3ef06e6b-9b7d-4651-b12d-db8be7f5e991:type=c_cpp&text=%23define+LED_STATUS+18%0A%0A%0A%2F%2F+the+setup+function+runs+once+when+you+press+reset+or+power+the+board%0Avoid+setup%28%29+%7B%0A++%2F%2F+initialize+digital+pin+LED_STATUS+as+an+output.%0A++pinMode%28LED_STATUS%2C+OUTPUT%29%3B%0A%7D%0A%0A%0A%2F%2F+the+loop+function+runs+over+and+over+again+forever%0Avoid+loop%28%29+%7B%0A++digitalWrite%28LED_STATUS%2C+HIGH%29%3B+++%2F%2F+turn+the+LED+on+%28HIGH+is+the+voltage+level%29%0A++delay%28200%29%3B+++++++++++++++++++++++%2F%2F+wait+for+a+second%0A++digitalWrite%28LED_STATUS%2C+LOW%29%3B++++%2F%2F+turn+the+LED+off+by+making+the+voltage+LOW%0A++delay%28200%29%3B+++++++++++++++++++++++%2F%2F+wait+for+a+second%0A%7D]

RE: TMC2300-IOT-REF - Remote controlled Stepper Motor - Getting your motor running

Workshopshed — Thu, 11 Feb 2021 20:21:24 GMT

So I made a primitive adapter to allow me to measure the current.

[View:/resized-image/__size/365x273/__key/commentfiles/f7d226abd59f475c9d224a79e3f0ec07-b6202a31-8a48-4fde-aa01-d95319fb2031/8750.contentimage_5F00_207333.jpg:365:273]

The current drawn by the 5v line on the USB is 260mA before it shuts off.

If I disconnect USB power and provide power from the battery then the CH340 USB chip is detected by the PC. Note that it is still getting hot so I'm only running the board for a few seconds at a time.

So as Jan and Gough surmised the problem is therefore after the USB and given the presence of 3.3v on the header then that suggests the AP2112K regulator is working fine too. Especially as the ESP32 is happily blinking the status LED.

It could be that there is a damaged component, I thought perhaps one the decoupling capacitors had gone short circuited? Or it could be that there is still code on the ESP32 that is causing troubles. I'm fairly certain that it is just blinking the LED and nothing else.

RE: TMC2300-IOT-REF - Remote controlled Stepper Motor - Getting your motor running

Workshopshed — Wed, 10 Feb 2021 08:26:35 GMT

[mention:ef601b47037147bfb9b0b4a3ab63026a:e9ed411860ed4f2ba0265705b8793d05], [mention:0b665b0358db41f193f85e33cc35abc1:e9ed411860ed4f2ba0265705b8793d05] thanks for to help. The 3.3v line is reading 3.3v when powered from battery. I think I have a USB isolator which should allow me to measure the current draw from the port.

Gough, the full reference design is on the Trinamic website, but I've enclosed the relevant bits here.

[View:/resized-image/__size/620x401/__key/commentfiles/f7d226abd59f475c9d224a79e3f0ec07-b6202a31-8a48-4fde-aa01-d95319fb2031/4478.contentimage_5F00_207328.png:620:401]

[View:/resized-image/__size/1142x408/__key/commentfiles/f7d226abd59f475c9d224a79e3f0ec07-b6202a31-8a48-4fde-aa01-d95319fb2031/2335.contentimage_5F00_207329.png:1142:408]

https://www.trinamic.com/support/eval-kits/details/tmc2300-iot-ref/

I'll need to get the microscope out to see if R4 and R5 are populated as that looks like a 0R resistor as a jumper approach. Also I'm not quite clear as to what I do with IO5 for that.

RE: TMC2300-IOT-REF - Remote controlled Stepper Motor - Getting your motor running

trinamic_lisa — Tue, 09 Feb 2021 10:34:03 GMT

Hi Andy, thanks for sharing your first step experiences!

Regarding the lack of USB detection:

Motor connected + ENABLE pin high can cause a power surge at the start. Enable pin has a pulldown to prevent that. As Gough suggested, please check +3V3. Possible that the board is dead though.

RE: TMC2300-IOT-REF - Remote controlled Stepper Motor - Getting your motor running

Gough Lui — Mon, 08 Feb 2021 11:01:31 GMT

Unfortunately, I don't have one of these boards, but if there is some schematic, that would usually be quite helpful. I haven't got the time to go and dig up documentation at this moment, but some basic hints -

USB being detected by the computer will depend on the cable and port being OK, but also the WCH chip next to it - the long rectangle - being fed the right voltages.

The battery connector - I presume the board can charge a battery? If so, unloaded, it should see about 4.2V (charge termination voltage), so 3.9V doesn't seem all that bad.

Perhaps if the board has a 3.3V or 5V pin on the I/O pads which are easier to probe, measure the voltage there using a DMM. If you have some sort of short or failure, then those rails may read low. Perhaps try with the motor detached first, so it's less likely the driver is causing the current draw. If you have a USB charger doctor current meter, that could also provide some information, but excessive warmth is never a good thing.

If the current from the USB with no motor attached is > 200mA, then you might well have an issue with something on the board itself. Above 500-900mA, most computer USB ports will either shut down or limit voltage severely which may be a cause of malfunction.

- Gough

RE: TMC2300-IOT-REF - Remote controlled Stepper Motor - Getting your motor running

DAB — Sun, 07 Feb 2021 20:22:25 GMT

Some of the pictures do not display.

DAB