PTouchHH

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Swapping chips or even driving from an Arduino

2

If the chip is the same and only the code changes for pricier devices then has anyone tried to swap the chips? I have a pt-h108 if i find a...

ethosgr

Wrong chip, additional information

1

The DC-motor regulator chip is a BA6220 (not BA6620). The datasheet is available here: http://pdf.datasheetcatalog.com/datasheet_pdf/contek-microelectronics/BA6220.pdf I found a very good explanation of the function of these motor control circuits. https://www.precisionmicrodrives.com/content/ab-026-sensorless-speed-stabiliser-for-a-dc-motor/...

wvsbsp

External control for battery voltage divider

2

Did you think about adding small external MCU to switch voltage divider on/off and separate it from motor controls? I've just bought one of this printers and was looking for...

monte-monte