What are the correct GPIO pin assignments for the 19JWT-B door sensor?
Use P22 DoorSnsrWSleep_pd, P23 BAT_ADC, P20 BAT_Relay, P15 WifiLED, and P14 Btn (active-low) [Elektroda, CMY, #20906219; Elektroda, p.kaczmarek2, #20990122].
Configuring Door Sensor 19JWT-B (BK7231N) (DeepSleep)
TL;DR
- Configure the 19JWT-B door sensor with BK7231N DeepSleep using the correct pin mapping for this model.
- Use LED on P15, MagnetField Sensor on P22, Battery Relay on P20, ADC on P23, and Button on P14; firmware update works through P2 with a 2 mm step.
- Helps DIY users working with this door sensor because it uses different pins than a similar device and needs the right setup.
- Lets you update the firmware through P2 without soldering, using 2.54 mm wires even though normal 2.54 mm pins do not fit.
- The button is not added to the config yet, and the cheap version does not include capacitor C2.
Very similar to this one: https://www.elektroda.com/rtvforum/topic3964392.html
But uses another pins.
Original app: Smart Life App
Pins
- LED on P15
- MagnetField Sensor on P22
- Battery Relay on P20, ADC on P23
- Button on P14. Has 10k pull up resistor (R8). Plus place for capacitor C2 (but no capacitor in this cheap version)
(I didn't add Button to config yet)
Config and Battery settings
Code: JSON
Firmware update
Firmware update can be done via P2, no soldering needed. Step is 2mm, so normal 2.54mm pins cannot be soldered. But 2.54mm wires are good for firmware update.
Pins from left to right:
- TX (orange) - P2-5
- RX (yellow) - P2-4
- CEN (grey) - P2-3
- GND (green) - P2-2
- VCC (not used) - P2-1
Links
Very similar to this one: https://www.elektroda.com/rtvforum/topic3964392.html
Link to aliexpress: https://www.aliexpress.us/item/3256805743653289.htm
Comments
The configuration seems to be missing a button. Do you know which pin is used for button? This can be handy for emergency wakeup feature that we plan to add soon. [Read more]
I was sure that button is Reset Button and wired to some CEN or reset. But you are right: Button on P14. Has 10k pull up resistor (R8) I can't check config because my unit was burned by accident. [Read more]
Hi! Will it be added to config templates of OpenBeken Webapp? I do not see it in hw tempalte. Thankx! [Read more]
Thank you for pointing that out, we must have missed that. Ok, I have added it now: https://github.com/OpenBekenIOT/webapp/commit/d3e7ab9b3c603002ea13d5e629e51888e21eabf2 [Read more]
Thanks! But you should add P14 Btn too. The config misses that! [Read more]
Thank you for pointing that out! This button can be useful as an emergency wake up method. Here is updated template: https://github.com/OpenBekenIOT/webapp/commit/26b08ba3afabbdac2debeb62e563ee4dc4aa... [Read more]
Hi, how is the battery life so far? And how quick does it update the open/close status I have a similar one like this but i haven’t flash it yet [Read more]
I have this device configured. Everything works well with HomeAssistant. Except one problem: it doesn't turn off WiFi, so it drains a battery just within couple of days. I guess I missed something. Sorry,... [Read more]
Do you when DoorSensorWithDeep sleep driver shown as running on your main device page? [Read more]
Nope: "0 drivers active". My understanding it should have started automatically? Oh, also "incomplete boots: 1" - could that be the hint of the problem? https://obrazki.elektroda.pl/8427425900_... [Read more]
Maybe you have disabled "Autostart drivers" flag. You can also start driver manually in short startup command or via autoexec.bat [Read more]
Looks like it, "Autostart drivers" flag was somehow set. I don't remember setting it explicitly. It was probably set because I was trying various configs. So I've reset the sensor to initial settings... [Read more]