OpenHAL desk-fan

unverified library/openhal_firmware/openhal-desk-fan.hal.yaml

Id	openhal-desk-fan
Manufacturer	OpenHAL
Model	desk-fan
Driver	openhal-firmware
Hazard	low
Limits	unconfirmed The library file holds suggested limits for fan_speed, and no person has confirmed those limits yet. How a person confirms the limits

Control channels

Channel	Min	Max	Step	Rate per s	Unit	Confirm	Limit
fan_speed	0	80	1	10	%	confirm	suggested

Read channels

Channel	Type	Unit	Every
temperature	number	degC	1 s

openhal: "0.1"
device: { name: Desk fan, model: desk-fan, manufacturer: OpenHAL }
id: openhal-desk-fan
match:
  firmware: { product: desk-fan }
connect: { openhal-firmware: auto, boot_s: 2 }
read:
  temperature: { unit: degC, every: 1 s, range: [-20, 80] }
write:
  fan_speed: { unit: percent, min: 0, max: 80, step: 1, max_change_per_s: 10, confirm: confirm, suggested: true }
safe_state: { fan_speed: 0 }
watchdog: { heartbeat: 1 s, on_loss: safe_state }
hazard: low
notes: >-
  Suggested limits. A person must confirm every limit before this device can be written.
  The sketch is the DeskFan example of the OpenHAL Arduino library on an Arduino Uno R3, with the fan
  driver on pin 9 and a thermistor on A0. The board allows 0 to 100 % and stops the fan when heartbeats
  stop for 2 s. This file keeps the fan at or below 80 %.
provenance: { source: library, by: OpenHAL starter library, at: 2026-10-25, verification: { status: unverified } }