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README: doc

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Astro 2020-10-11 21:50:36 +02:00
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README.md
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@ -115,6 +115,8 @@ s-h 0 b 3800
## Thermo-Electric Cooling (TEC)
Connect the Peltier device to the TEC0/1-/+ outputs.
### Limits
Each of the MAX1968 TEC driver has analog/PWM inputs for setting
@ -127,7 +129,7 @@ Use the `pwm` command to see current settings and maximum values.
| `max_v` | Volts | Maximum voltage |
| `max_i_pos` | Amperes | Maximum positive current |
| `max_i_neg` | Amperes | Maximum negative current |
| | Amperes | current control |
| | Amperes | Output current control |
Example: set the maximum voltage of channel 0 to 1.5 V.
```
@ -158,6 +160,14 @@ of channel 0 to the PID algorithm:
pwm 0 pid
```
## LED indicators
| Name | Color | Meaning |
| --- | :---: | --- |
| R1 | Red | Firmware initializing |
| G3 | Green | Closed-loop mode (PID engaged) |
| G4 | Green | Firmware busy |
## Reports
Use the bare `report` command to obtain a single report. Enable