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DIY solder paste machine

Overview

This motherboard is composed of arduino nano, drv8833, 0.91-inch OLED display and the schematic diagrams of the three modules. The delay time can be adjusted according to the control of the screw N20 reduction motor to quantitatively extrude solder paste. According to the suggestions of netizens, a retraction function has been added. Both the extrusion delay and the retraction delay can be adjusted through the OLED display and the parameters are saved. No data will be lost when the eeprom is powered off.

The measured extrusion effect is average, but it is much more elegant than squeezing directly with your hands. Let’s have fun with it and don’t take it too seriously.

Design Files

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It is your responsibility to test the circuit yourself and determine its suitability for you. EEWorld will not be liable for direct, indirect, special, incidental, consequential or punitive damages arising from any cause or anything connected to any reference design used.

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Update:2025-06-24 21:27:19

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