Dass167 — Work

DASS167 is an industrial/hobbyist stepper motor driver module based on the TB6600-style architecture (popularly used for CNC and 3D-printer control). It targets mid-power stepper motors (typically NEMA 17–23) and is positioned between small microdriver modules and heavier single-axis CNC drives. This review examines design, features, performance, usability, reliability, and value.

The DASS-167 requires a very clean power supply. Do not power the analog side from the same switching regulator (like a buck converter) that powers your microcontroller without using an LDO (Low Drop-Out regulator) to filter it first. dass167 work

| Symptom | Likely Cause | Solution | | :--- | :--- | :--- | | Last few bits of ADC data are "jittering" (e.g., fluctuating by 5-10 LSBs) | Ground loop or noisy power supply. | Check AGND/DGND connection. Add an LDO for AVDD. Ensure analog inputs are not floating. | | DRDY pin never goes low | SPI communication error / Wrong CRC. | Verify your SPI clock polarity (CPOL) and phase (CPHA) settings. The DASS-167 usually requires Mode 1 or Mode 3. | | Readings are always exactly 0 or exactly Max Value | Inputs are shorted to ground or VCC. | Check solder bridges on the PCB near the analog input pins. | | Noise increases when a nearby relay/motor turns on | EMI coupling into the analog traces. | Add shielding, improve trace routing, or implement a digital software filter (like a moving average or median filter) in your MCU. | | Symptom | Likely Cause | Solution |