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    • William Meli

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

      [SOLVED] High battery usage (Pro-Mini / RFM69 / Si7021)
      Troubleshooting • rfm69 battery pro mini si7021 battery powered • • Oumuamua  

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      NeverDie

      The product listing for the step-up that the OP is using says: Sucks the juice out of your batteries. Sounds like it delivers on what it promises....
    • Siddharth Velappan

      MH Z19b - Running CO2 sensor on batteries
      Hardware • battery battery powered battery sensor sensors co2 z19 mhz19 mh z19 co2 sensors mhz19b z19b mh z19b • • Siddharth Velappan  

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      bitttttten

      Hi @Siddharth-Velappan The warmup time of the MH Z19b is 3 minutes. So 2 is probably fine, but you could probably do 3 just in case. Although 2 would save your more battery time. Do you mind explaining your setup a bit more? I would love to do something similar but I do not know where to get started with the PIC microcontroller!
    • CrankyCoder

      Power sensor? Battery?
      Development • battery battery powered • • CrankyCoder  

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      alexsh1

      @NeverDie Yes, you are correct - it is based on ATMega1284P. So not relevant My point is that I'd rather stick to the datasheet rather than overclock, but that's just me. And yes I realise that Moteino is overclocking, but the size, voltage and flash are really appealing to me.
    • tripy

      Removing pro mini led bricked the board
      Hardware • pro mini atmega328p battery powered power led • • tripy  

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      Thomas Nordquist

      I decided to fix the broken trace I so naively destroyed while breaking the power LED out with a screwdriver. The image from @tripy really helped to figure out which trace I actually broke. It helped a lot to desolder the voltage regulator as well, leaving me with pads I can solder to. I left the regulator out after the repair since I am running the thing from 5V USB. With the regulator out of the way the correct pad was easily identified. Maybe someone else finds this useful, definitly saved my kitchen lighting project today
    • Tango2

      Low Power Servo Actuator
      Development • arduino battery powered rf24 low power servo • • Tango2  

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      martinhjelmare

      @hek Thanks for the comments. Sounds good. I'll report back when I have some progress.
    • nutcracker

      Problem powering sensor from external battery (100000mah)
      Troubleshooting • ds18b20 battery powered nrf24l01+pa+lna 100000mah sr-501 • • nutcracker  

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      wahid

      hello, i know it is late, but others could see it too. i had the same problem running small (LOW POWER) modules on power banks, because the battery or power bank has a built in power meter, while it is charging and consuming power, there will be power on the USB port, but the arduino's consumption is very tiny regarding charging a phone. you need to disable this feature somehow.
    • cheesepower

      Battery level don't show up
      Troubleshooting • vera pro mini battery powered dht22 vera plugin 1.4 • • cheesepower  

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      cheesepower

      Yes i made several reset, exclusions, inclusions, vera reset and clear EPROM but nothing worked... I made a new sensor and it works perfectly Strange... I will try again when i will have more time. Thanks for the help
    • jonnyfishman

      Disable external module to preserve battery life
      Hardware • battery powered module • • jonnyfishman  

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      No one has replied

    • jonnyfishman

      Interrupt on recieve radio data
      Hardware • battery powered interrupt • • jonnyfishman  

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      hek

      @jonnyfishman said: would it be better to trigger the callback manually to pick up a response? No that won't help (as long as you call gw.process() ).
    • jonnyfishman

      MySensors power consumption
      Hardware • battery powered • • jonnyfishman  

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      pit007

      Of cource it's powered down - but is his done by a sw-command via SPI (and also the pwr-up) or by transistor ? I'm surprised about the quality of the rNF - the power down seems very good?