Fixing ISP W-LAN security

2016-06-01 20.53.06

A few days ago my ISP Unitymedia informed me that they will activate a hotspot on the router provided by them. Receiving this letter triggered some red security alert in my brain. So i called the customer support if there … Continue reading

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Building a connected nesting box network. Part 5

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The boxes build we decided to deploy 3 of the boxes in the forest. (1 RPi Master, 2 Slave nodes). The nesting boxes were already prepared a few months in before and it was just a matter of placing them … Continue reading

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Building a connected nesting box network. Part 4

SAM_4976

After we got the breadboard prototype running it was time to choose an enclosure and design a PCB to get everything together. For the board we choose not getting bigger as 10x10cm to keep costs down. The enclosure We searched for a … Continue reading

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Building a connected nesting box network. Part 3

breadboard-prototype

After deciding with which camera we go, we began to build our first Breadboard prototype. Feature List Solar-powered µC: Arduino Pro Mini 8Mhz@3.3V with MySensors OTA Bootloader Camera: Arducam Mini, power controlled by µC RF: nrf24l01+ PA/LNA Snapshot triggered by … Continue reading

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Building a connected nesting box network. Part 2

Serial TTL Camera

Finding a camera module that would work with Arduino pro mini was at first sight the hardest part of the project, but after a little bit of search we found the TTL Serial JPEG Camera on Adafruit. TTL Serial JPEG … Continue reading

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Building a connected nesting box network. Part 1

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Info: This is Part 1 of a not yet defined number of Parts about building a connected nesting box network. Prolog In April 2015 a friend and me build a connected nesting box to observe the inner life of it. … Continue reading

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Building a LC-Filter for your nrf24l01+ pa/lna module

axial-lead-inductor

Follow up on Fixing your cheap nrf24l01+ pa/lna module. Theory The LC-Filter is a low pass filter and,  like the name suggests, consist of a inductance (L) combined with a capacitance (C). In our case the 3.3µH choke and the 220µF capacitor. … Continue reading

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Fixing your cheap nrf24l01+ pa/lna module

nrf24l01+ pa/lna

The typical cheap nrf24l01+ pa/lna is sensitive to noise, badly shielded and energy hungry. Chinese sellers advertising them with “wireless communication up to 1000 meters!”. In reality although you can call yourself lucky if you reach with a unmodified module … Continue reading

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