Today I re-learned 1 thing & newly learned 2 others.
The thing I re-learned is to pay attention to the bowden tubing inside the hotend. Over the past week or so, it was getting harder & harder to get filament through the nozzle. There were a number of symptoms:

Replacing the tubing fully restored the flow rate. This experience does, however, make me more interested in an all-metal hotend.
The new things I learned are about bootloaders.
The 1st thing I found out, the hard way, is that flashing firmware to a control board by using an ISP Programmer, one that connects directly to the ISP header pins on the control board, will literally wipe out the bootloader. My ISP Programmer came with the Creality BLTouch kit I received recently. I can still flash firmware to the 1.1.5 Silent board, but I have to do it by using the ISP Programmer. I cannot do it over USB. I am currently investigating how I can re-flash a bootloader onto the board.
The 2nd thing I found out is that bootloaders actually reduce the space available for firmware. So, if I want to load Marlin 2.x, and have BLTouch capability, I can opt to burn the firmware via ISP Programmer, and thus gain back the space that would have been used for a bootloader, & let the firmware use it. This could make it possible to fit firmware that might otherwise be too large for the available space.
#clog #shrink #capricorn #skipping
The thing I re-learned is to pay attention to the bowden tubing inside the hotend. Over the past week or so, it was getting harder & harder to get filament through the nozzle. There were a number of symptoms:
- the waste line I print down the side of the printbed started 'stuttering'. By that I mean a dotted line would be printed, instead of a solid 1.
- it was getting harder to manually push filament through the nozzle.
- I found I had to raise the temperature of the nozzle.
- I had to increase the flow rate.
Replacing the tubing fully restored the flow rate. This experience does, however, make me more interested in an all-metal hotend.
The new things I learned are about bootloaders.
The 1st thing I found out, the hard way, is that flashing firmware to a control board by using an ISP Programmer, one that connects directly to the ISP header pins on the control board, will literally wipe out the bootloader. My ISP Programmer came with the Creality BLTouch kit I received recently. I can still flash firmware to the 1.1.5 Silent board, but I have to do it by using the ISP Programmer. I cannot do it over USB. I am currently investigating how I can re-flash a bootloader onto the board.
The 2nd thing I found out is that bootloaders actually reduce the space available for firmware. So, if I want to load Marlin 2.x, and have BLTouch capability, I can opt to burn the firmware via ISP Programmer, and thus gain back the space that would have been used for a bootloader, & let the firmware use it. This could make it possible to fit firmware that might otherwise be too large for the available space.
#clog #shrink #capricorn #skipping
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