I recently bought two MakerHawk RF Wireless 868 MHz LoRa modules, which are actually EByte E32 868T20D types. The E32 series is based on the SemTech SX1276/SX1278 RF IC from SEMTECH with transparent transmission and LoRa spread spectrum technology. EByte provides datasheets and product specs, but there is no library for Arduino or whatever. After ..
[nextpage title=“Introduction“] There are a few articles covering GPS Tracker which send GPS Data over the SIGFOX network. In my opinion they fall short of presenting a full stack solution which make use of the GPS Data by a remote client device like Android smartphones. So I decided to write an article about GPS Data ..
The idea behind this article was that, although Basic Auth is considered to be extremely unsafe, adding SSL to it fully compensates for most safety concerns. Why is that? If your backend is SSL secured, data transfer happens through a tunnel which encrypts the whole HHTP request, effectively encrypting also the Basic-Auth Authorization header which ..
Introduction The idea behind a battery powered night light came from my realization that my bedside cabinet was already cluttered by a few electrical appliances, like a lamp, a radio, and a smartphone power adapter, and fumbling around while searching the light switch usually caused something to drop onto the floor. A night light usually ..
Introduction Outdoor IoT solutions depend on a long lasting and stable power supply, but where to find in the wilderness? What immediately comes into mind is battery power, but due to the incompatability between battery voltages and supply voltage of IoT modules like Arduino or ESP8266, a voltage converter is usually part of the circuit, ..
[nextpage title=“Introduction“] Introduction A couple of months ago I wrote an article about the WaveShare 1.54 inch e-paper display connected to an Arduino MKR1000. At some point of time, and for unknown reasons, the MKR1000 stopped working, and I didn’t want to shell out another freakin‘ 35 bucks for a new one. In the meantime, ..
[nextpage title=“Introduction“] Introduction The Espressif ESP8266-01 module is known for the excessive load it can incur on a circuit. This is particularly true when the module boots up and connects to a WiFi network. This load easily exceeds what the Arduino Pro Mini can provide through its builtin voltage regulator. I destroyed my Arduino module ..
[nextpage title=“Introduction“] Introduction The Espressif ESP8266-01 module is dirt cheap but only has two (four if you don’t need Tx/Rx) digital pins and no analog pins. Nevertheless, it still has its usage if you only need digital I/O. You can control up to four actuators via the digital pins (GPIO set to output) or control ..
Introduction The Arduino MKR1000 module contains a wealthy lot more SRAM than the Arduino UNO or even MEGA. This, and its 3.3 V base voltage makes it the ideal platform for using it with the Waveshare 1.54 Inch E-Paper Display Panel Module. This article describes how to connect the display module to the MKR1000 and run ..
[nextpage title=“Introduction“] Introduction Pathfinding algorithms find a path from point S (start) to point G (goal). The performance of such algorithms depend on the number of iterations in their core loop until a path is found. There are two popular pathfinding algorithms out there, the „Wavefront“ and the „A*“ (A Star) algorithm. It is my ..