How much battery life you expect with this modified boot-loader and code?

I also have project for mini.
The project have pads for battery, battery protection IC, LIPO charger USB for charging... battery voltage measurements....
But the project is not released yet, because high temperature during charging.

@kimot
At all of the time 328p will be in sleep forever, when button is pressed interrupt is triggered and wake the 328p power ON the radio send info power OFF radio and go sleep forever.
Only when battery level go below critical level. the radio stay OFF and only interrupt and sleep forever.

I am almost ready with the drawings of the hardware, and next week start work on software... you can see the project in the openhardware.io i gonna upload it later tomorrow.

Door/Window/Button

Thanks for the ideas, i will modify the code to use LowPower lib and will cut the power to the radio module to increase battery live, when last massage is send the node will never power the radio module, will be only short interrupt and go again to sleep forever. This will give me power usage 20times more than self battery discharge. Which have to give me node uptime around 260days with coin cell battery.

Yes but in this case the last massage will be the same like the previous, only the battery level will be below some predefined value. i don't like this. I will think how to solve this.

Is exist something "last wish" in MySensors, when battery go below predefined level the device to send last massage to the GW and go sleep forever.
The idea is the controller/application to have information about the device and to be known this device is dead and need battery change.

Thanks for fast reply, actually 900nA is to big number and i prefer to use xxx_POWER_PIN to cut the power of the NRF module.
I am building switch powered with CR2032 battery and i want to extend battery live as much as possible, for a switch is not needed to keep radio alive, i need it ON only when transmit signal

Do you know how much will be power usage in transportDisable mode?

What will happen if i cut the power OFF of the radio after each transmission? is it needed to be initialize again before next transmission?

Hello,

Some ware in MySensors website have info how to combine 2 sketches, i think one Arduino can handle all your need.

Hello,

Even without capacitors work well, for all of my sensors. With the capacitor only the range is little bit increased.
The SMD version of the NRF module works only for some vendors, there exist different pinout of those NRF modules.
Also there have one issue with the design, the one of the mounting holes are not align to Arduino hole at the moment i work to fix this, after fixing the gerbers will be updated.

I don't like one think here in openhardware.io there haven't project versions and when some change is made cannot be visible as changed, if somebody had already download the gerber files, will have old version of them and is not be alerted for new design change.

Hello,

I wan to make fork based on your work, i have some question:

1. How many devices can be attached to one bus?
2. Is this 328p loaded with Arduino boot loader?
3. How to make OTA update if its possible please share some doc. ?

Advantage of this sensor is fast and easy installing by the non qualified personal. The sensor is designed for large agriculture facility with many greenhouses where is needed to be controlled temperature and humidity, the atmospheric pressure is for control the motor of air inlet and outlet. With help of the sensor installed outside the greenhouse provide information about positive/negative pressure inside the greenhouse.

Finlay the software read accurate temp/humid value of the Si7021, and only atmospheric pressure of BMP180, the temperature sensor inside the BMP180 is used only by the sensor itself to provide accurate atmospheric pressure measurements.

The sensor can be used also for home automation, and drone applications where is needed correction of the UAV barometric sensor compared to the ground barometric sensor, also humidity measurement can help the pilot to calculate more accurate flying time.

See this project, there have solution for hardware based watch dog, can be easily transform to be usable for Arduino.

https://www.openhardware.io/view/636/Raspberry-PI-Hat

I am not familiar with this board. look good. But mine design have few leverages:

1. You can stack another shield on top.
2. Have hardware Watch Dog Timer in case of your R-PI freeze.

Is it possible to use the second ISP on my raspberypi 3 to connect NRF24L01+ and what will be the wiring diagram, also what have to change in mygsw library

I send command from remote control arduino read this command (i can see this in serial monitor) but this commands are not sending to gateway, my radio is working the sensor connect to gateway and controller. I use example Sketch given up in this page without changing anything.
Any idea whats wrong in my setup?

I need arduino code to send RAW sensor value, when sensor change his value to send this value to controller. The type of signals have to be V_LEVEL. Normally i will use this with analog sensors.

If somebody have this kind of code please share with us.

I read datasheet for DHT11 and 2 degree deviation is ok for them. Now i playing with DHT22 I try this #define SENSOR_TEMP_OFFSET -1.3, but nothing is changed the sensor still give me same value.