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Raspberry Pi 4 Coolers: Which one is best? (Quickie)
t is well known that the Raspberry Pi 4 gets quite hot and reduces its processing speed if it has to work hard. In one of my Quickies, I tested…
IoT Talk
18
Wi-Fi Antennas with Gain and ESP32 Long-Range Mode (part2)
Everybody talks about LoRa to bridge long distances. Today we will have a look into how we can extend the range of a normal ESP32 using the Arduino IDE. You…
8
Mailbag with Zigbee, Old 8085 Chips incl. Programmer, NanoVNA
This Mailbag is divided into two parts. Part 1 aired last Sunday morning. My Bitcoin address: 19FSmqbBzb5zsYB1d8Bq4KbxVmezToDNTV If you want to support the channel, please use the links below to…
38
Raspberry Pi Server based on Docker, with VPN, Dropbox backup, Influx, Grafana, etc.
If you ever dreamed of a Raspberry IOT server with backup to Dropbox and secure remote access from everywhere through your own VPN, all based on Docker containers, you have…
18
Lora Propagation, Range, Antennas, and Link Budget (incl. LoRaWAN)
In this video, I will appear on stage and will talk about LoRa propagation, antennas, range, and other interesting stuff. I also will show how you can simulate the range…
27
We build a historic “PC” using technology from the 1970s (8085, 8155, old EPROM, TTL)
We all love our Arduinos and ESPs. But do you know or remember where they came from? Today we start a journey back to the late 1970 and early 1980s…
45
Four new Arduino Nano Boards: Test and Comparison (Every, 33 IoT, 33 BLE, 33 BLE Sense)
Recently, Arduino released four new products. They all look very similar but use completely different Microcontroller chips. So we have to answer two questions: Do they know what they are…
20
Tricks to get NTP time for the ESP32 and the ESP8266 incl. Summer- and Daylight Saving time
In many projects (Arduino IDE), we need accurate local time. With our ESP chips, we have some libraries to get NTP time, as I showed in video #67. Most of…
14
How to measure CO2 and VOC with Arduino. Which one is better?
Do you sometimes feel tired during meetings? Or do you sometimes have a headache after work? Do you want to change that? Then, this video can be interesting for you…
31
Announcement: Launch of public LoRa Satellite (FossaSat)
Satellites are expensive and big and only can be launched by the military, governments, or large corporations. Tomorrow morning, this will change. A 16-year old student and his team will…