Firmware

New software will often require new firmware. New software packages always come with the latest firmware at the time the software was released; however, sometimes newer firmware is available.

There are two families of firmware; one for the heads, or STM-103 boards, and another for the motion controllers, or STM-427 / STM-407 boards.

Print Head / Hot Bed Firmware

For the STM-103 Boards. Consult the table below for the proper version. The wrong version WILL NOT WORK.

Video instructions for flashing the 103 (HH/HB) Controllers: https://youtu.be/yM8QMZBTb4o

1. Launch Repetrel ( C:\Repetrel\bin\Repetrel.exe ).
2. Go to File > Update Firmware > HotHead Controller (even for HotBeds).
3. Navigate to the proper .hex file for your machine from the table below.
4. Connect the ST-Link as shown in the video above.
5. Click "Program" - the process takes a few seconds.
6. You are done.

Firmware Listing

Filament Heads	Firmware
MK1-250	_FIL_250_PLAT_1A.hex
MK1-250 with red RTDs (from 2013, 2014)	_FIL_250_RED_235A.hex
MK2-250	_FIL_250_PLAT_1A.hex
MK1-450	_FIL_450_45A.hex
Emulsion-Type Heads	Firmware
All Emulsion-type Heads (including mixing heads)	_TUBES_35K.hex
With COD or Clench Valve tied to Printing Moves Only	_TUBES_49V.hex
Laser Heads	Firmware
Diode Lasers on Repetrel v2.x	_LASER_R2_234.hex
Diode and CO2 Lasers on Repetrel v3.x	_LASER_R3_PWM_6L.hex
Spindle Tools	Firmware
Spindle Tools (1- and 3- Phase)	_DrillMill_2.3.hex
Inkjet Heads	Firmware
Inkjet Headss (Heat- and Piezo- based)	_INKJET_6E.hex

Print Head / Hot Bed Values

Let's not confuse flashing a version of firmware on a head with flashing new default values to a head. I know - I didn't come up with the terms.

Once your head has the proper firmware version running on it, you want to be sure that the values for the head are correct. Please consult the pages for Cold and Warm Flow and Hot Flow for our recommended values, then adjust for your custom environment as needed, determined through trial and observation.

To change the values, click on the arrow at the top right (next page) or the temperature display area at the top left (previous page) of the displayed data for that head. Edit values as appropriate, and then on the last page, RIGHT-CLICK on the Flash button and then confirm that you want to overwrite the previous defaults with these values, then click Yes on the confirmation dialog box.

For our purposes, the hotbed and a printhead are controlled in the same manner.

Motion Controller Firmware

For the STM-429 and STM-407 Boards.

Video instructions for flashing the 407 and 429 (Motion) Controllers: https://youtu.be/cFAFRkpLmww

Note that all units shipped since 2015 are internally cabled to automatically connect for flashing, so there should be no need to remove the rear cover or connect special cables.

Firmware Listing

Printer Model	Repetrel Version	Firmware
All Hydra Models (3-, 4- and 5- axis)	Repetrel 3.082_x	Hydra 3.082_x
Engine, High Resolution	Repetrel 3.082_x	Hydra 3.082_x
System 30M (and earlier Systems)	Repetrel 3.082_x	Hyrel 3.081_x
	Repetrel 2.865	Version 2.414
Engine, Standard Resolution	Repetrel 3.082_x	Hyrel 3.082_x
	Repetrel 2.865	Version 2.414

Motion Controller Values

Let's not confuse flashing a version of firmware on the motion controller with flashing new default values to the motion controller - again, not my terms.

We should always be sure that we're running not only with the correct version of the motion controller firmware, but that the values for the present model of equipment are being used. In Repetrel, under Settings > Printer, a dialog box will open with lots of numbers you may want to play with. Please don't change any values unless you're sure that they will do something that you want. We have default files for each model, and some users will want to save custom settings - like different park positions for different beds, or different maximum print speeds and acceleration parameters for more heavily outfitted yoke assemblies.

There is a utility to read and write configuration files on every PC running Repetrel v3 at C:\repetrel\Printer Settings, and you should run on (or at least start with) the configuration file for your model printer.

Please resist the urge to go tampering here without talking to us. There's probably a better way to achieve your desired end results.