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💬 EFEKTA WIRELESS TEMPERATURE & HUMIDITY SENSOR V1 | nRF52840

openhardware.io last edited by openhardware.io

https://www.openhardware.io/view/781/EFEKTA-WIRELESS-TEMPERATURE-and-HUMIDITY-SENSOR-V1-or-nRF52840
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18650 / newbie board / boost??
My Project • battery 18650 newbie pcb • • CrankyCoder

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@alexsh1 the reason i am using the 18650's is the fact i have a steady stream of them coming in for my large battery packs. I have a couple hundred that aren't dead but just aren't quite up to to the standard i am putting in my big packs.
NRF51822 door sensor - help needed [Solved]
Development • battery nrf5 door sensors nrf51822 • • Puneit Thukral

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@Puneit-Thukral Could you post your full working sketch please? I'm revisiting some of my 51822 nodes that have sat collecting dust for a long time and thought i might try to get them working again.
💬 Battery Powered Sensors
Announcements • battery • • hek

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@nekitoss I used 3.3V pro mini with regulator removed and powered by Vin pin. Also removed leds from the pro mini. I used minicore bootloader. I used the small pir sensors and again removed the regulator to power directly from the pro mini outputs. After that sleep the node and trigger on interrupt. Send battery level once a day. Use inbuilt battery level monitor and not external components that constantly drain power to get battery level. 1.8V is 0% on the graph (not visible yet!) but I have had nodes working below 1.7V It's a matter of luck with that it seems. Hope this helps you on the right track. I'll try and help if you want. This is the latest image and still going strong after 18 months. Voltage is at 2.903V Here is photo of the test example - I need to make a case and produce more of them over winter..... Here is the same build/code of a window sensor. Similar time frame but hardly triggered.....
💬 RFM69 Multisensor Node (CR2032)
OpenHardware.io • mysensors temperature & humidity sensor • • openhardware.io

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Hello. Any news from this project? Do you made the changes for the timer TLP?

💬 EFEKTA WIRELESS TEMPERATURE & HUMIDITY SENSOR V1 | nRF52840

Suggested Topics

💬 EFEKTA V4 Temp&Hum&Press sensor with E-Ink 1.54
OpenHardware.io • nrf52832 nrf52 si7021 nrf52840 bme280 htu21d sht21 e-ink display nrf52833 • • openhardware.io

18650 / newbie board / boost??
My Project • battery 18650 newbie pcb • • CrankyCoder

NRF51822 door sensor - help needed [Solved]
Development • battery nrf5 door sensors nrf51822 • • Puneit Thukral

💬 Battery Powered Sensors
Announcements • battery • • hek

💬 RFM69 Multisensor Node (CR2032)
OpenHardware.io • mysensors temperature & humidity sensor • • openhardware.io

34
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💬 EFEKTA WIRELESS TEMPERATURE & HUMIDITY SENSOR V1 | nRF52840

Suggested Topics

💬 EFEKTA V4 Temp&Hum&Press sensor with E-Ink 1.54 OpenHardware.io • nrf52832 nrf52 si7021 nrf52840 bme280 htu21d sht21 e-ink display nrf52833 • • openhardware.io

18650 / newbie board / boost?? My Project • battery 18650 newbie pcb • • CrankyCoder

NRF51822 door sensor - help needed [Solved] Development • battery nrf5 door sensors nrf51822 • • Puneit Thukral

💬 Battery Powered Sensors Announcements • battery • • hek

💬 RFM69 Multisensor Node (CR2032) OpenHardware.io • mysensors temperature & humidity sensor • • openhardware.io

34Online

11.6kUsers

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112.9kPosts

💬 EFEKTA V4 Temp&Hum&Press sensor with E-Ink 1.54
OpenHardware.io • nrf52832 nrf52 si7021 nrf52840 bme280 htu21d sht21 e-ink display nrf52833 • • openhardware.io

18650 / newbie board / boost??
My Project • battery 18650 newbie pcb • • CrankyCoder

NRF51822 door sensor - help needed [Solved]
Development • battery nrf5 door sensors nrf51822 • • Puneit Thukral

💬 Battery Powered Sensors
Announcements • battery • • hek

💬 RFM69 Multisensor Node (CR2032)
OpenHardware.io • mysensors temperature & humidity sensor • • openhardware.io

34
Online

11.6k
Users

11.1k
Topics

112.9k
Posts