I picked up a really dirt cheap Woox PIR battery cameras from Amazon for £18 . These are battery operated and like Blink, only intended to wake up when motion is detected. Figured it was worth a punt as I know their other indoor home cameras are compatible with Tuya .
https://www.amazon.co.uk/Woox-Smart-Outdoor-Camera-Waterproof/dp/B07QD6D3X8
The bummer was that the new Tuya integration was not pulling in the pir_switch or the wireless_awake entity which I could clearly see available in the IoT portal for the device. Additionally the Tuya Smart App did not allow a schedule for making the PIR active. This makes the device pretty unusable with Home Assistant because it would mean you would have to use the Tuya Smartlife App to turn PIR on and off manually when needed, and if using this camera in a high traffic area and only wanting it monitored at certain times, the battery would drain out.
My intended use, was for an indoor area , and only wanted it monitored at night .
I’ve never really looked at HA integration from a coding perspective before, so figured I’d give it ago, and turns out, for this anyway, it was really simple 
/usr/src/homeassistant/homeassistant/components/tuya
const.py
@@ -82,6 +82,7 @@
DEVICE_CLASS_TUYA_LED_TYPE = "tuya__led_type"
DEVICE_CLASS_TUYA_LIGHT_MODE = "tuya__light_mode"
DEVICE_CLASS_TUYA_MOTION_SENSITIVITY = "tuya__motion_sensitivity"
+DEVICE_CLASS_TUYA_PIR_SWITCH = "tuya__pir_switch"
DEVICE_CLASS_TUYA_RECORD_MODE = "tuya__record_mode"
DEVICE_CLASS_TUYA_RELAY_STATUS = "tuya__relay_status"
DEVICE_CLASS_TUYA_STATUS = "tuya__status"
@@ -218,6 +219,7 @@
MODE = "mode" # Working mode / Mode
MOTION_RECORD = "motion_record"
MOTION_SENSITIVITY = "motion_sensitivity"
+ PIR_SWITCH = "pir_switch" # pir sensitivity
MOTION_SWITCH = "motion_switch" # Motion switch
MOTION_TRACKING = "motion_tracking"
MUFFLING = "muffling" # Muffling
switch.py
@@ -219,7 +218,6 @@
MODE = "mode" # Working mode / Mode
MOTION_RECORD = "motion_record"
MOTION_SENSITIVITY = "motion_sensitivity"
+ PIR_SWITCH = "pir_switch" # pir sensitivity
MOTION_SWITCH = "motion_switch" # Motion switch
MOTION_TRACKING = "motion_tracking"
MUFFLING = "muffling" # Muffling
strings.select.json
@@ -33,6 +33,12 @@
"1": "Medium sensitivity",
"2": "High sensitivity"
},
+ "tuya__pir_switch": {
+ "0": "Off",
+ "1": "Low sensitivity",
+ "2": "Medium sensitivity"
+ "3": "High sensitivity"
+ },
"tuya__record_mode": {
"1": "Record events only",
"2": "Continuous recording"
In order to make decisions on the PIR being triggered on or off, we can pull in the wireless_awake status entity which will allow us to make decisions in HA :
const.py
@@ -310,6 +313,7 @@
WATER_SET = "water_set" # Water level
WATERSENSOR_STATE = "watersensor_state"
WET = "wet" # Humidification
+ WIRELESS_AWAKE = "wireless_awake" # wake wifi switch
WIRELESS_BATTERYLOCK = "wireless_batterylock"
WIRELESS_ELECTRICITY = "wireless_electricity"
WORK_MODE = "work_mode" # Working mode
switch.py
@ -368,6 +368,12 @@
name="Motion Alarm",
entity_category=ENTITY_CATEGORY_CONFIG,
),
+ SwitchEntityDescription(
+ key=DPCode.WIRELESS_AWAKE,
+ icon="mdi:eye-off",
+ name="Wireless Awake",
+ entity_category=ENTITY_CATEGORY_CONFIG,
+ ),
),
# IoT Switch?
# Note: Undocumented
Transfotmed a cheap, wireless unusable camera, to something a bit more useful.
EDIT
One small issue I ran into…You can’t modify the PIR setting when the device is not awake, so a bit of a catch 22 in that if you disable PIR, you can only enable it via the Tuya Smartlife app - I can’t see any way to wake these cameras up remotely without that app. I’m monitoring the device battery performance in a high traffic area on low PIR sensitivity.
If battery life is decent, I might get a couple more for backup to my Blink integration.