Notepad of a tinker, maker, hacker or whatever you call it :)

7 posts under

How to make a LoraWAN GPS tracker

What can you do in a rainy evening when you go to your hackerspace ? Take a NoteRF V2 PCB, a GPS, a battery and you can make a lora GPS tracker ! Solder the PCB Hand solder it or for lazy guys like me, order a $5 stencil from OSH Stencil. Prepare the rig, apply...

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NoteRF - Sensors schematic and layout

Finally I published it, sources of my wireless sensors are available here. For the record it has: ATMega328 RFM69 wireless chip All analog and digital ports 3.3V regulator Battery tension can be sensed through A7 Footprint for DS7505 temperature sensor FTDI and ISP connectors...

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(Not so) industrial reflow process

I wanted to try if a 100% DIY process to reflow a small batch of boards. For about 10 boards it is cheaper to hand solder them than ordering a stencil, but I was wondering if it can be faster to manually cut a stencil and reflow the boards on a frying pan. Stencil...

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NoteRF - Add a new sensor - Moisture sensor

As I like plants but always forgot to water them, I bought a cheap resistive moisture sensor. In facts it is just two strips of copper wired in voltage divider with a 10k resistor, the IC is used as a comparator to have a "digital" output, with threshold set by the trimpot....

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NoteRF - Why create a new set of things ?

I had a discussion with a friend of mine on "Why the hell are you designing a new PCB instead of buying one" ? And he is right, there is a lot of great cheap boars like Moteino, Anarduino, Jeenode... But on the hardware side: I like to learn Some of them are...

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NoteRF - Some code

As a part of my future home automation called NoteRF, I need some devices other than a Raspberry Pi grabbing weather and pollution data from the internet. I designed a PCB and throw some lines of code on it. Currently, the devices are only sensors, but I plan to implement some actuators latter. Everything...

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Node-Red - Grab pollution data from local services

I am currently evaluating some solutions to build my home automation system. As a part of this system I want to monitor air quality, but, I do not have any sensor yet, so I use a public service and parse its data with Node-Red. I built the following flow which get the data from...

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