Search found 16 matches

by GeoffS
Mon Feb 10, 2020 1:36 am
Forum: Current Version(2.60)
Topic: confused about external driver and wiring
Replies: 24
Views: 14382

Re: confused about external driver and wiring

well you are lucky then. its probably one in a million. its like this. take a friend with you and stand in a steep hill. you have a tank of water each with you. its five meter high, this five meters of water can is known and can be measured at he bottom of the water tank. if you walk upp the hill f...
by GeoffS
Tue Feb 04, 2020 12:59 am
Forum: Current Version(2.60)
Topic: confused about external driver and wiring
Replies: 24
Views: 14382

Re: confused about external driver and wiring

A simpler way to connect the stepper driver would be to connect the PUL- and DIR- to ground and the DIR+ and PUL+ to the direction and step pins on the pi hat. ENA pins do not need to be connected as the default for the driver is enabled . No 5V supply is needed in this case. The stepper driver uses...
by GeoffS
Tue Feb 04, 2020 12:23 am
Forum: Current Version(2.60)
Topic: confused about external driver and wiring
Replies: 24
Views: 14382

Re: confused about external driver and wiring

''You need to take the 5v from the rpi or you loses your reference and never know the voltage.'' I don't really understand what this means. The 5 volt power supply never changes. What do you mean by '' lose reference''? Is this how you have it wired up? https://ibb.co/HBRW0zg You only show +5V comi...
by GeoffS
Thu Jan 30, 2020 11:31 pm
Forum: Current Version(2.60)
Topic: i cant make the serial port to work plz help.
Replies: 16
Views: 2176

Re: i cant make the serial port to work plz help.

Your Pi will have two IP addresses, 127.0.0.1 which is called the loopback address and the IP address you assign to it . Connecting to the loopback address will work but only if you are accessing it from the PI itself. For network access from another computer on the network, you use the assigned IP ...
by GeoffS
Thu Jan 30, 2020 12:51 am
Forum: Current Version(2.60)
Topic: i cant make the serial port to work plz help.
Replies: 16
Views: 2176

Re: i cant make the serial port to work plz help.

It's good, it shows that /dev/ttyAMA0 is present.
I'd try the mincom connection again. Your previous post seemed to show a O instead of 0 in /dev/ttyAMA0 so check that it is zero and not capital O.
by GeoffS
Tue Jan 14, 2020 2:04 am
Forum: Current Version(2.60)
Topic: Trinamic Drivers
Replies: 30
Views: 15726

Re: Trinamic Drivers

TinyFactory wrote:
Mon Jan 13, 2020 6:15 pm
If I have read this correct, I can use the tmc2208 drivers with this board? They are drop in replacements of the A4988.
Yes, they are a drop in replacement. You do lose some of the features that are available with this drivers via UART though.
by GeoffS
Sat Jan 11, 2020 11:09 am
Forum: Current Version(2.60)
Topic: How to troubleshoot when nothing is happening?
Replies: 14
Views: 2100

Re: How to troubleshoot when nothing is happening?

What does a grbl status command report?
by GeoffS
Thu Jan 02, 2020 11:46 am
Forum: Current Version(2.60)
Topic: power
Replies: 6
Views: 980

Re: power

TinyFactory wrote:
Thu Jan 02, 2020 11:09 am
So if I’m using the on board drivers I need to power both the pi and the cnc hat.
That's correct. The 12v-36Vto the Pi Hat is used for the stepper drivers only. Pi has to provide the 5V for the Arduino.
by GeoffS
Thu Jan 02, 2020 1:01 am
Forum: Current Version(2.60)
Topic: power
Replies: 6
Views: 980

Re: power

I didn't know if the cnc hat powers the pi It's the other way around, the Pi powers the Pi hat. In the K40 laser I'm working on, only the PI 3B+ has a power connection i.e. 5V. This powers the Arduion on the PI hat and there are level shifters on the Pi hat to manage the 3.3V <-> 5V conversion. Fro...
by GeoffS
Sun Dec 29, 2019 11:37 am
Forum: Current Version(2.60)
Topic: Trinamic Drivers
Replies: 30
Views: 15726

Re: Trinamic Drivers

I noticed a post of yours for a couple of mnths ago regarding the latst Raspian and laserweb4. I've managed to get laserweb4 working with Raspan Buster (latest) with the PI CNC board (actually a CNC Sheild/UNO butlogically the same thing). all I haven't done or tested is loading grbl to the 328. Pi ...