Navigation

    • Register
    • Login
    • OpenHardware.io
    • Categories
    • Recent
    • Tags
    • Popular
    1. Home
    2. evs
    3. Posts
    • Profile
    • Following
    • Followers
    • Topics
    • Posts
    • Best
    • Groups

    Posts made by evs

    • RE: nrf52832 sensor board

      @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.

      posted in Hardware
      evs
      evs
    • RE: nrf52832 sensor board

      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/

      posted in Hardware
      evs
      evs
    • nrf52832 sensor board

      Hi,

      I didn't like the boards i found so far. So I made something:
      0_1516434750555_schematic.png
      1_1516434750555_gerber.png

      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!

      posted in Hardware
      evs
      evs
    • RE: 💬 Sensebender Micro mk2

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

      posted in OpenHardware.io
      evs
      evs
    • RE: 💬 Sensebender Micro mk2

      Hi Thomas,

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

      Thanks,
      EVS

      posted in OpenHardware.io
      evs
      evs