ฝัง
- เผยแพร่เมื่อ 6 ก.พ. 2022
- An overview video of version 3 of my contact sensor.
Get 10 PCBs for $5 USD at www.pcbway.com
Buy the Contact Sensor - store.mrdiy.ca/p/wireless-con...
Source code and schematics - gitlab.com/MrDIYca/ultra-low-...
This door and window sensor is built using an ESP8266, ATtiny13a, LDO and a Lithium battery charge controller.
Shopping for the battery charger IC?
============================
■ Amazon - geni.us/p6E6
■ AliExpress - s.click.aliexpress.com/e/_AmZsJT
My Contact Sensor System Playlist - • My Ultra Low Power Sen...
The links above are usually affiliate links that support the channel (no additional cost for you). - วิทยาศาสตร์และเทคโนโลยี
![รุ่นใหญ่ EP.2 บุกบ้าน เสรีพิศุทธ์ ระหว่าง บิ๊กต่อ กับ บิ๊กโจ๊ก อา รักใครมากกว่า ?? l [Nickynachat]](http://i.ytimg.com/vi/j2inUqhN__0/mqdefault.jpg)
A tip that I use for programming is to edit the footprint of the connector to slightly offset the pads a small amount alternating left and right so that the programming pins are a friction fit and have a good contact.
I will give it a try - thanks for the tip!
Excellent video ! Great work !
Awesome! Thank you for sharing with us.
Sure thing!
i notice it have to be placed outside of the door, possible to place inside of the opening so its more secure.
Wish it had LoRa so that range was bigger/more reliable for a larger home/garden.
Hiii... Your Project is Really good and I am trying to replicate the same... I Have tried the version 3 code for attiny and while deep sleep I am getting a 350 micro amps.. I even tried version 2S of attiny code which gives me a deep sleep current of 26 micro amps... The deep sleep current i mentioned above are attiny alone... May I know what board manager you are using for attiny( I am using Micro dude)... And how much current you get attiny alone while deep sleep??...
Very exciting project! 👍 Is there a BMS to protect the battery from undervoltage?
I use protected lipo batteries with BMS built-in for my sensors. The charge controller also has a UVLO. But in theory, if you leave a low battery connected, the ATtiny might drain is ever further over a very long period of time (years).
Thanks for sharing ，can I remove the Attiny and directly switch_input to the EN pin of the ldo, so that it is more energy efficient without the Attiny
if Switch_input is a self-reset button ? My project is to use the self-reset button to remotely control the light through espnow
Cool gadget. Does it come with instructions to pair it with home automation?
I saw a large battery pack, a coin cell, and a mention of a battery charger circuit. So what is it typical power source?
Thanks. It depends on the home automation system. For Home Assistant, you can use this www.home-assistant.io/integrations/sensor.mqtt. For NodeRed, you can use the MQTT node to trigger events.
For version 3, any lipo battery will do, as long as it has a PH2.0 plug ( and the right wire polarity)
very nice. would this also work with esphome? I already have home assistant and many esphome devices. so I naturally don't need a hub.
I am working on a new video to show how to use your own code bypassing the hub. If you can code it, I don't see why it wouldn't work.
hello my friend! what software did you use to calculate your battery life over time and graph it like that? :)
I reviewed it here - th-cam.com/video/qzFg5c-B1as/w-d-xo.html
Would you have any idea at what temperatures these are rated at? I have a shop outside and wanted to put some sensors on the doors. Last month it got down to -35F (-37C) without wind. THey would be out of the wind.
The hub would be in a heated area so not worried about that.
Thanks!
-37C is a bit extreme, we only see it once or twice a year here, even my car struggles to start. But it is good question. I will have to go back and check the datasheet for all the components. For now, I will leave one in the freezer and see what happens.
@@MrDIYca it's not common but it does happen every year. Last year we hit that mark for almost a month, it was pretty crazy
@@WillYork could the contact sensor be mounted inside, say at the top of the door. maybe with a small part sticking out to trigger the switch
@@blkhackr so it's a heated office inside an unheated steel building. Ideally I want a sensor on each door. I have shop equipment in the unheated part and electronics in the heated part so I'd want to monitor both.
had an idea , how do I reach you to discuss it for a better motion sensorsystem?
here is good.
Is it not a problem to send 4.2v (fully charged battery) to GPIO (SWITCH_INPUT)?
In theory, it may, but based on my research and practical experience of using it on multiple doors/windows for years, it has proven to be a non-issue. Additionally, only a negligible amount of current leaks (high impedance) into the pin, and this occurs for a very brief duration.