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some warnings

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Thaddeus Hughes
2026-05-26 10:02:28 -05:00
parent 72436a7bf8
commit 93f4041600
1 changed files with 4 additions and 2 deletions
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6
docs/WIRING.md
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@@ -55,7 +55,7 @@ I switched to some linear encoders that have a D-sub connector. They are also 5V
The DB37 cable contains drive signals and motor encoder signals.
*This pinout was determined by probing. I'm not sure what some of the pins do; some of the pins labelled GND or 5V might actually be an index pulse or something.*
*This pinout was determined by probing. I'm not sure what some of the pins do; some of the ??? pins might actually be an index pulse or something.*
| Pin | Signal | Notes |
@@ -174,7 +174,9 @@ A custom `M101` and `M102` g code enables/disables the z-axis.
| +0.5 | 75 % | half forward |
| +1.0 | 100 % | full forward |
When the enable line is deasserted the pwmgen output is forced off (not 50%), so the amp sees a distinct disabled state vs. "commanded zero".
When the enable line is deasserted the pwmgen output is forced off (not 50%), so the amp sees a distinct disabled state vs. "commanded zero". You can hear the drives hum/whine at the 50% state.
**WARNING: ENABLING THE DRIVE WITH THE PWM DISCONNECTED WILL SHOW AS A 0% DUTY CYCLE - CAUSING THE DRIVE TO RUN FULL REVERSE!**
### Enable