pereira.newton@ymail.com

found this
https://synthetos.comtopics/tinyg-raspberry-pi

will try it out

Hi cmcgrath5035,

Following are the test I have done, but still T2 doesn’t appear as a device on my laptops.

1) Arduino -> Serial Port Json -> Chillipeppr Grbl: I could see the serial port connection on the serial port json server, on both the laptops.

2) Arduino -> CNCJS: I could see the serial port connection on the dropdowns on CNCJS; Connections, on both the laptops.

3) Tinyg -> Serial Port Json -> Chillipeppr Tinyg: I could not see the serial port connection on the serial port json server, on both the laptops.
on Mac all I see is “/dev/tty.Bluetooth-Incoming-Port”
on Windows all I see is no serial port connections

4) Tinyg -> CNCJS: I could not see the serial port connection on the dropdowns on CNCJS; Connections, on both the laptops.
on Mac all I see is “/dev/tty.Bluetooth-Incoming-Port”
on Windows all I see is empty drop down.

Hi cmcgrath5035,

Yeah I have tried now with 3 different laptops….2 Windows and 1 Mac all resulted in the same outcome on all the USB ports.

I can connect my Arduino Mega and can see it in the USB list on the device manager side.

but when I connect the Tinyg the list doesn’t refresh…. 🙁

having the worst possible luck……

not sure what to do to get it detected…… given the boot up sequence is working I’m assuming the board is not damaged…..

hmmm… thanks for your response and guidance cmcgrath5035…..

I guess u will have to start using T2…..

hi @cmcgrath5035,

Following is my test case and results.

Test 1:
Connection: Motor 1 (J17) on Tinyg connect to Driver(D1 – 2HSS86H) and Nema 32 Motor (M1)

Result: Motor M1 rotating

Test 2:
Connection: Motor 1 (J17) on Tinyg connect to Driver(D2 – 2HSS86H) and Nema 32 Motor (M2)

Result: Motor M3 rotating

Test 3:
Connection: Motor 1 (J17) on Tinyg connect to Driver(D3 – 2HSS86H) and Nema 32 Motor (M3)

Result: Motor M3 rotating

Test 4:
Connection: Motor 1 (J17) on Tinyg connect to Driver(D4 – 2HSS86H) and Nema 32 Motor (M4)

Result: Motor M4 rotating

Test 5:
Connection: Motor 1 (J17) on Tinyg connect to Driver(D1 – 2HSS86H) and Nema 32 Motor (M1)

Result: Motor M1 rotating

Test 6:
Connection: Motor 2 (J18) on Tinyg connect to Driver(D2 – 2HSS86H) and Nema 32 Motor (M2)

Result: Motor M2 rotating

Test 7:
Connection: Motor 3 (J19) on Tinyg connect to Driver(D3 – 2HSS86H) and Nema 32 Motor (M3)

Result: Motor M3 rotating

Test 8:
Connection: Motor 4 (J20) on Tinyg connect to Driver(D4 – 2HSS86H) and Nema 32 Motor (M4)

Result: Motor M4 does not rotating

Test 9:
Connection: Motor 1 (J17) on Tinyg connect to Driver(D1 – 2HSS86H) and Driver(D2 – 2HSS86H)

Result: Nema 32 connected to D1 moves, Nema 32 connect to D2 does not move.

Test 10:
Connection: Motor 2 (J18) on Tinyg connect to Driver(D2 – 2HSS86H) and Driver(D3 – 2HSS86H)

Result: Nema 32 connected to D2 moves, Nema 32 connect to D3 does not move.

Test 11:
Connection: Motor 2 (J19) on Tinyg connect to Driver(D3 – 2HSS86H) and Driver(D4 – 2HSS86H)

Result: Nema 32 connected to D3 moves, Nema 32 connect to D4 does not move.

Conclusion:
Test 1 to 4 proves the Drivers and Nema 32 Motors are all working.
Test 5 to 7 proves that J17, J18, J19 is able to drive the motor.
Test 8 proves that J20 is not behaving like its siblings (J17, J18, J19), not sure why and what’s the cause of it. I have ended up not using J20, instead I’m replace the Nema32 with Nema17 and connecting Nema17 directly to the onboard driver.
Test 9 to 11 prove that 2 Driver 2HSS86H is not able to perform as expected when connected in parallel with the working J ports.

Comments:
1) Do you have a really heavy spindle load? – [Newton] No its a small spindle and all in all the weight would be 1-2kgs

2) I drive Nema32s on my XY1Y2Z machine directly from the tinyG driver devices – [Newton] please can you share your wire diagram or pics of your machine I will try to replicate it at my end.

3) I’ll also assume that You issue 2 has the objective of creating an (X1X2)YZ machine as a workaround for the motor4 port (J20) not working with your external drivers. – [Newton] No so currently the machine is using J17, J18, J19, and Motor4 on board driver to drive 4 motors, of these axis X1,X2,Y,Z. I want to connect the fifth motor to drive A axis. What are the options I have for connecting the 5th motor?

4) On possible solution might be to bradboard a one input, two output buffer and level translator circuit to increase the Fanout of the J17 pins. – [Newton] do you mean a level shifter? if yes then I have ordered a level shifter. I plan to supply the Low Voltage(3.3V) and High Voltage(12V) from the TinyG board. Would that work?

Request:
Please can you help propose a way forward. The end goal I have is to connect the 5 motor and have my machine configuration as X1,X2,Y,Z,A.
I really don’t want to end up buying another\different controller, since I have 2 tinyg, of which 1 is still in its original packing. I would just end-up having to much hardware.