Hi,

I didn't like the boards i found so far. So I made something:

I made it as versatile and small as possible. With still the ability to solder it by hand, if you have some experience (and a loop).

• I used a CR123 lithium battery. because it is alway disappointing how much current it uses and that basically dictate the size of the PCB.
• I could think of and sensor that is solderable by hand that I can add. But i added a i2c connector for that.
• i added a expansion connector for future use.For thinks like: wifi bridge touch buttons and more

So please tell me what you think. things to improve or things that that are still needed to make in work with mysensors.
When I made my first prototype I will make it available hopenhardware.io
Thanks!

@gohan more safe. So what is the more part?? What happens if there is a problem and they got shorted. then there is a lot of energy released in a real short of time.
batteries with a real low internal resistance are not suited for use where there are unguarded. Only if you really know what you are doing and knows that the batteries are of high quality. I worked at a company that made LiFePO4 batteries and battery monitor hardware. And i see the result of mishaps.

If you are aiming for a year + battery life in room+ temperatures. Any other battery, except lithium battery, The battery life is determined by there self discharge.

Don't underestimate the danger of batteries. The internal resistance in a LiFePo4 is really low. So if something bad happens you got a fire hazard. Special unknown Chinees brands. Youtube is full of li-ion fire hazards/

Hi,

I didn't like the boards i found so far. So I made something:

I made it as versatile and small as possible. With still the ability to solder it by hand, if you have some experience (and a loop).

• I used a CR123 lithium battery. because it is alway disappointing how much current it uses and that basically dictate the size of the PCB.
• I could think of and sensor that is solderable by hand that I can add. But i added a i2c connector for that.
• i added a expansion connector for future use.For thinks like: wifi bridge touch buttons and more

So please tell me what you think. things to improve or things that that are still needed to make in work with mysensors.
When I made my first prototype I will make it available hopenhardware.io
Thanks!

@tbowmo
Thanks for the update. But without the time frame. what needs to be done to finish. Is there software for the SAMD processor?

Hi Thomas,

I like this design! Can you please tell the status and your future plans for this design?

Thanks,
EVS