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10 Watt only – RockPro64

2021-08-07 by iotline_wp_adm_100

iotline_wp_adm_100

10 Watt only: #RockPro64 from #Pine64 on car battery w/ 10" screen & #Linux / #Armbian OS. Faster than Raspberry Pi => Real desktop speed. 40% of a 60A car battery gives ~30h use on 1 charge. #solarpower #solarenergy #rural #poweroutage #power #sailing #4wd #africa #india #preppers #prepping [video width="960"…

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Measuring ø8cm solar cells

2021-07-252021-07-25 by iotline_wp_adm_100

iotline_wp_adm_100

Measuring the solar cells did not go as expected. I thought I could use a cheap variable power supply from China. No, the DPS5005 eats up most of the few milli Amps the cells produce. Nothing left on the other side. Here a video of the setup that did not…

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50 A meter mounted and encased

2021-07-242021-07-24 by iotline_wp_adm_100

iotline_wp_adm_100

50 Amp meter/sensor finally mounted and encased in the 'lunch box'. Now called version 1. The future version 2 should send to a MQTT broker. Either local or online. - Or maybe both at the same time? Note the plug system, with which a setup can be reconfigure as needed.…

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HW ready for the digital +/-50A amp-meter

2021-06-262021-06-26 by iotline_wp_adm_100

iotline_wp_adm_100

Electronic HW ready for SW. Digital +/-50A amp-meter. Here intended for a 12/24V implementation, multi-use car/solar power. #ESP32 / extension- + adapter-board; http://iotline.eu / amp-board; CZH-Labs, D-1085, V1. Box comes the next days.

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50A current sensor test

2021-06-13 by iotline_wp_adm_100

iotline_wp_adm_100

Technical characteristic: 40mV/A change at 5V power supply. Tested the sensor at 3.3V as power supply. This changes the scale accordingly to around 26mV/A. Technical description: Sensor outputs the middle (2.53V) of the supply voltage (5.06V) when no current runs. For every Ampere in "positive" direction 0.04V is added to…

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Assembling a few solar cells to test with INA219

2021-05-192021-05-19 by iotline_wp_adm_100

iotline_wp_adm_100

Preparing a few solar cells for powering anything offline. 6 times 6V, 0.35A, Ø 8cm, according to seller. Let us see the next weeks what they finally can deliver here in southern, sunny Spain, in optimal (California) conditions. Upper three are in parallel, as well as the lower three. The…

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#Classic #car #IoT upgrade!

2021-05-112021-05-11 by iotline_wp_adm_100

iotline_wp_adm_100

#Classic #car #IoT upgrade! - A sensor box for the engine compartment. Deviating values will change the color. Extreme values will provoke an alarm sound. Connects to the smartphone. Not all sensors attached in this shot. #classiccar #oldtimer #monitoring #engine

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SPI with multiple devices attached – Arduino, Heltec WiFi Lora 32 and RFID-RC522

2019-05-29 by iotline_wp_adm_100

iotline_wp_adm_100

It is possible to attach several sensors (slaves) etc. to one SPI connection that exists on an Arduino or other microcontrollers like the Heltec Wifi Lora 32 (master). As an example have I tested the RFID-RC522 as an common RFID reader/writer on the Heltec development board. (more…)

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LoRaWan from 0 to 100 – Heltec WiFi LoRa 32 (v2) as a gateway to TheThingsNetwork

2018-10-19 by iotline_wp_adm_100

iotline_wp_adm_100

LoRaWan from 0 to 100. - A 5-part tutorial with off-the-shelf hardware and software to make a LoRa node send data via a LoRa router/gateway to www.thethingsnetwork.org. (more…)

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