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    • openhardware.io

      💬 Hammar 32 bit 3D printer controller
      OpenHardware.io • esp32 3d print reprap 3d printer cnc marlin wroom-32 • • openhardware.io  

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    • William Meli

      Car battery health monitoring and alerts system with IoT integration
      My Project • mysensors temperature led ota iot wifi battery powered ble bluetooth low power rgb motion sensor hardware 3d print battery sensor fota battery monitor mcu enclosure measurement battery voltage pcb layout alarm system bluetooth low energy 32bit software pcb manufacturi pcba dc-to-dc antenna • • William Meli  

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      William Meli

      @NeverDie Thx for appreciating the work done. There will also be an open source part in the future. When and how extensive the open source part will be, remains to be seen. The release of certain information (block diagram, ..., in this post) is related to those open source parts. There are some OBD solutions, however most of them (in my experience) give back low frequency data put by the car manufacturer on the OBD-bus (CAN, ...). Therefore transients evolving directly from the battery could only be recorded if the manufacturer sends those data accordingly on the bus. Due to the small bandwidth(also because of other car data that have to be sent, ...), such battery data are sent more often once per second or less. Fast battery events (i.e. cranking events, ...) are therefore imperceptible. Unless the manufacturer processes the fast events and then sends them (once per second or less), which is very unlikely if the manufacturer does not market this feature itself. Third parties devices for high frequency sensing costs several hundreds dollars. In my experience, important battery states (especially the fast ones) are recorded by measuring and processing corresponding data directly on the battery. I agree with you about the limits related to the communication over Bluetooth. But i think Bluetooth 5.0 will improve a lot. However, WiFi will always remain an important option due to the high data throughput. The combination of both (BLE & WiFi), especially with regard to energy consumption, will gain in importance.
    • openhardware.io

      💬 Optimization 3D printer base Marlin solution
      OpenHardware.io • 3d print • • openhardware.io  

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    • mbj

      Pi Zero
      Enclosures / 3D Printing • 3d print pi zero • • mbj  

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      mbj

      It was not so hard finding one. I got it from the Pi Hut because now and then they get a shipment and via their newsletter the word is spread. Actually, they seem to have it in stock right now. Just pick the "Just the Pi Zero" option to avoid all their extras Here is the link https://thepihut.com/products/raspberry-pi-zero?variant=14062715972
    • openhardware.io

      vThing - CO2 Monitor - Dual Beam - Wifi
      OpenHardware.io • esp8266 openhab wifi 3d print home automation co2 domotica • • openhardware.io  

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      Vladimir Savchenko

      @epierre said: I had the contact with this seller, but an international money transfer was needed and is expensive... yeah, they also have a minimum order quantity and ship with DHL only, so you have to pay import taxes to EU so it only makes sense if you order a big quantitiy and then try to resell it somehow all in all a hobby that at least has some return on investment, compared to other ones i had :)) You're courageous th have gone on kickstarter, from memory seeedstudio nearly went down because of an error on a crowdfunding project and had to produce and ship (the more expensive par of it) a remlacement for the first batches... ahh .. i didnt know this about them... and in their scale - i can undertand it happened to me as well but in my scale it was rather a paid lesson :))))
    • Dirk_H

      [contest] 3D printed battery powered Wall Remote Control
      Enclosures / 3D Printing • pcb hardware 3d print contest • • Dirk_H  

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      gohan

      Did you guys managed to have it working with latest mysensors version?
    • therik

      Reed Switch normally open or normally closed
      Hardware • hardware 3d print • • therik  

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      ersanzop

      i had good experience with it. . .