PTHAT

Click on the various components to view there properties.

Processor

On Board Arm Cortex M4 processor running at 100MHz that takes care of all the complicated routines for you.

JTAG

The PTHAT will be supplied with a JTAG programmer so new firmware updates can be easily be done by the end user. Also ideal for anyone wanting to develop their own firmware.

Reset

Reset button can be used to re-start the processor or using built in software commands.

Extension block for Top Hat

34 Pin expansion block allows a Top Hat board to be attached, that adds three more pulse outputs.

Connector Block for X-Axis (Channel1 Output)

This connector block has outputs for the X-Axis motor driver. These include Step(pulse), Direction, Enable, 5V and X-Limit Switch input.

Crystal

1MHz precision Crystal for driving the DDS chips.

DDS generator

Dedicated Direct digital synthesizer (DDS) pulse generators with 0.004Hz resolution for each channel.

Rasberry Pi Connector with extended pins

This 40 pin connector block is for mounting the PTHAT onto the Raspberry Pi.
With extended pins it still allows full access to the Raspberry Pi pins when the PTHAT is in place.

High Speed Switch

Individual high speed switches for each channel to allow for more control when outputting and counting pulses.

Eeprom

Complies to the Raspberry PI HAT specifications by having an Eeprom that can be read from the RPI.

Voltage Level Buffer

Each 3.3V line gets taken to 5 volts using Voltage Level Buffer chips.

Connector Block for Y-Axis (Channel2 Output)

This connector block has outputs for the Y-Axis motor driver. These include Step(pulse), Direction, Enable, 5V and Y-Limit Switch input.

Emergency stop Connector Block

This connector block is for connection of a dedicated Emergency Stop Button.

I/O Connector Blocks

On this block we have connections 3.3V,0V, ADC inputs and 5V outputs.

Connector Block for Z-Axis (Channel3 Output)

This connector block has outputs for the Z-Axis motor driver. These include Step(pulse), Direction, Enable, 5V and Z-Limit Switch input.

Connector Block for E-Axis (Channel4 Output)

This connector block has outputs for the E-Axis motor driver. These include Step(pulse), Direction, Enable, 5V and E-Limit Switch input.

DDS generators

Dedicated Direct digital synthesizer (DDS) pulse generators with 0.004Hz resolution for each channel.

High Speed Switches

Individual high speed switches for each channel to allow for more control when outputting and counting pulses.

Extension Pins

34 Pin connector allows easy connection to the PTHAT.

Byte	Setting	Description
Byte 1	I=Instant Command B=Buffer Command	Sets command to either Instant or Buffer.
Byte 2-3	0-99	Optional Command ID
Byte 4-5	WW=Milliseconds WM=Microseconds	Set Wait Delay in either Milliseconds or Microseconds
Byte 6-9	0-9999	Delay in ms so 1000ms=1 second delay Delay is us so 1000us=0.001 of a second
Byte 10	*	End of Command

Byte	Setting	Description
Byte 1	Z
Byte 2-5	0000
Byte 6	*	End of Command

Byte	Setting	Description
Byte 1	H
Byte 2-5	0000
Byte 6	*	End of Command

Byte	Setting	Description
Byte 1	N	Sends a Reset to the PTHAT
Byte 2	*	End of Command

Byte	Setting	Description
Byte 1	I=Instant Command B=Buffer Command	Sets command to either Instant or Buffer.
Byte 2-3	0-99	Optional Command ID
Byte 4-5	FW	Request Firmware
Byte 6	*	End of Command

X Pause Received	Y Pause Received	Z Pause Received	E Pause Received	Pause All Received	X Resume Received	Y Resume Received	Z Resume Received	E Resume Received	All Resume Received
RI00PX*	RI00PY*	RI00PZ*	RI00PE*	RI00PA*	CI00PX*	CI00PY*	CI00PZ*	CI00PE*	CI00PA*
DI00PX* XP(D)XResult* YP(D)YResult* ZP(D)ZResult* EP(D)EResult*	DI00PY* XP(D)XResult* YP(D)YResult* ZP(D)ZResult* EP(D)EResult*	DI00PZ* XP(D)XResult* YP(D)YResult* ZP(D)ZResult* EP(D)EResult*	DI00PE* XP(D)XResult* YP(D)YResult* ZP(D)ZResult* EP(D)EResult*	DI00PX to E* XP(D)XResult* YP(D)YResult* ZP(D)ZResult* EP(D)EResult*
(D)=Direction of motor travel	(D)=Direction of motor travel	(D)=Direction of motor travel	(D)=Direction of motor travel	(D)=Direction of motor travel
Result=0000000000-4294967295	Result=0000000000-4294967295	Result=0000000000-4294967295	Result=0000000000-4294967295	Result=0000000000-4294967295

X set Received	Y set Received	Z set Received	E set Received	X set Completed	Y set Completed	Z set Completed	E set Completed
RI00JX*	RI00JY*	RI00JZ*	RI00JE*	CI00JX*	CI00JY*	CI00JZ*	CI00JE*
DI00JX* XP(D)XResult* YP(D)YResult* ZP(D)ZResult* EP(D)EResult*	DI00JY* XP(D)XResult* YP(D)YResult* ZP(D)ZResult* EP(D)EResult*	DI00JZ* XP(D)XResult* YP(D)YResult* ZP(D)ZResult* EP(D)EResult*	DI00JE* XP(D)XResult* YP(D)YResult* ZP(D)ZResult* EP(D)EResult*
(D)=Direction of motor travel	(D)=Direction of motor travel	(D)=Direction of motor travel	(D)=Direction of motor travel
Result=0000000000-4294967295	Result=0000000000-4294967295	Result=0000000000-4294967295	Result=0000000000-4294967295

X Pulse Count Received Result	Y Pulse Count Received Result	Z Pulse Count Received Result	E Pulse Count Received Result	X Pulse Count Completed	Y Pulse Count Completed	Z Pulse Count Completed	E Pulse Count Completed
RI00XP*	RI00YP*	RI00ZP*	RI00EP*	CI00XP*	CI00YP*	CI00ZP*	CI00EP*
XP(D)XResult	YP(D)YResult	ZP(D)ZResult	EP(D)EResult
(D)=Direction of X motor travel	(D)=Direction of Y motor travel	(D)=Direction of Z motor travel	(D)=Direction of E motor travel
XResult=0000000000-4294967295	YResult=0000000000-4294967295	ZResult=0000000000-4294967295	EResult=0000000000-4294967295

Byte	Setting	Description
Byte 1	I=Instant Command B=Buffer Command	Sets command to either Instant or Buffer.
Byte 2-3	0-99	Optional Command ID
Byte 4-5	PX= Pause/Resume X-Axis PY= Pause/Resume Y-Axis PZ= Pause/Resume Z-Axis PE= Pause/Resume E-Axis PA= Pause/Resume All	Sets which Axis is to be Paused/Resumed
Byte 6	0-1	Sends back pulse count from Axis if set to 1 with: PA=X-Axis PX=X-Axis PY=Y-Axis PZ=Z-Axis PE=E-Axis
Byte 7	0-1	Sends back pulse count from Axis if set to 1 with: PA=Y-Axis Set to 0 for PX, PY,PZ,PE
Byte 8	0-1>	Sends back pulse count from Axis if set to 1 with: PA=Z-Axis Set to 0 for PX, PY,PZ,PE
Byte 9	0-1	Sends back pulse count from Axis if set to 1 with: PA=E-Axis Set to 0 for PX, PY,PZ,PE
Byte 6	*	End of Command