i want to do this project safely https://youtu.be/Wcen-f_zzBo
the phone is mounted onto the wall n being charged wireless. the charger is behind the wall.
it would be nice if i can stop the charging at 90%. resume charge when it dips down to 20%. can Tasker or the HA app do this? if so, how???
i dont cant use a wifi relay like Shelly or Sonoff because the metal gang box in the wall is too shallow (the wall is very thin)
You can use the HA app and node red to loop and monitor the charging.
This is my “loop” that monitors the battery level while the phone is on charge.
i can view battery life. but how do i stop the phone from charging at 90%? how to resume at 20%?
i see you use nodered. but i dont see what’s the commands behind the pretty ui
My complete flow is gigantic and involves lots of variables. Posting the complete flow will probably be confusing.
But this is the part you have seen:
[{"id":"a79d657b.d79498","type":"switch","z":"9f20b43d.4c5c78","name":"Is batterylevel above 90%?","property":"batterylevel","propertyType":"msg","rules":[{"t":"gte","v":"90","vt":"num"},{"t":"lt","v":"90","vt":"num"}],"checkall":"true","repair":false,"outputs":2,"x":2900,"y":320,"wires":[["fb2484ba.c981a8"],["130d7cc9.841023"]]},{"id":"5ad20ac.96d24f4","type":"api-call-service","z":"9f20b43d.4c5c78","name":"Try to force update battery level","server":"4bbca37b.1700ec","version":1,"debugenabled":false,"service_domain":"homeassistant","service":"update_entity","entityId":"","data":"{\"entity_id\": msg.level}","dataType":"jsonata","mergecontext":"","output_location":"","output_location_type":"none","mustacheAltTags":false,"x":2890,"y":460,"wires":[["16d45f28.ba78c1"]]},{"id":"fb2484ba.c981a8","type":"time-range-switch","z":"9f20b43d.4c5c78","name":"","lat":"","lon":"","startTime":"08:00","endTime":"20:00","startOffset":0,"endOffset":0,"x":3310,"y":340,"wires":[["40d79dce.353c14"],["d44a6fb0.8475a"]]},{"id":"16d45f28.ba78c1","type":"delay","z":"9f20b43d.4c5c78","name":"","pauseType":"delay","timeout":"30","timeoutUnits":"seconds","rate":"1","nbRateUnits":"1","rateUnits":"second","randomFirst":"1","randomLast":"5","randomUnits":"seconds","drop":false,"x":2600,"y":540,"wires":[["9176519d.8853a"]]},{"id":"cbdfba21.c06818","type":"api-call-service","z":"9f20b43d.4c5c78","name":"Display the current batterylevel in Lovelace","server":"4bbca37b.1700ec","version":1,"debugenabled":false,"service_domain":"input_text","service":"set_value","entityId":"{{percent}}","data":"{\"entity_id\":\"{{percent}}\",\"value\":\"{{batterylevel}}\"}","dataType":"json","mergecontext":"","output_location":"","output_location_type":"none","mustacheAltTags":false,"x":2930,"y":240,"wires":[["a79d657b.d79498"]]},{"id":"130d7cc9.841023","type":"api-current-state","z":"9f20b43d.4c5c78","name":"Battery charging?","server":"4bbca37b.1700ec","version":1,"outputs":2,"halt_if":"charging","halt_if_type":"str","halt_if_compare":"is","override_topic":false,"entity_id":"{{state}}","state_type":"str","state_location":"payload","override_payload":"msg","entity_location":"data","override_data":"msg","blockInputOverrides":false,"x":2890,"y":380,"wires":[["5ad20ac.96d24f4"],["fb2484ba.c981a8"]]},{"id":"fe1e0ad4.6ca7b8","type":"api-current-state","z":"9f20b43d.4c5c78","name":"Get the batterylevel","server":"4bbca37b.1700ec","version":1,"outputs":1,"halt_if":"","halt_if_type":"num","halt_if_compare":"is","override_topic":false,"entity_id":"{{level}}","state_type":"str","state_location":"batterylevel","override_payload":"msg","entity_location":"data","override_data":"msg","blockInputOverrides":false,"x":2430,"y":340,"wires":[["cbdfba21.c06818","369d1c4.cb515e4"]]},{"id":"9176519d.8853a","type":"api-current-state","z":"9f20b43d.4c5c78","name":"Get the batterylevel","server":"4bbca37b.1700ec","version":1,"outputs":1,"halt_if":"","halt_if_type":"num","halt_if_compare":"is","override_topic":false,"entity_id":"{{level}}","state_type":"str","state_location":"batterylevel","override_payload":"msg","entity_location":"data","override_data":"msg","blockInputOverrides":false,"x":2830,"y":180,"wires":[["cbdfba21.c06818"]]},{"id":"4bbca37b.1700ec","type":"server","z":"","name":"Home Assistant","addon":true}]
In this part I have used variables for level which is sensor.“phone”_battery_level and state and so on.
You can trigger it with a inject node set on time interval.
That way you trigger it to turn on and if the battery level is below 20% it should enter the loop.
If not, or if the phone does not charge at this current time turn off the charger.
For reference, this is my complete flow:
