It’s time for a new episode of Elektor Lab Talk! In the video below, we take a close look at recent wireless projects and community contributions. The session covers several ESP32-based designs, including an autonomous LoRaWAN sensor node with integrated GPS, SD card logging, solar charging, and a low-power architecture using a Texas Instruments TPL5110 IC. Another project is an ESP32 audio transceiver board, developed to transmit audio with sample rates of 32 kHz or 48 kHz. It employs dual-channel for redundancy and uses NRF24 modules to reduce packet loss in the crowded 2.4 GHz band. Stereo and mono streaming, and the related synchronization challenges, are discussed in detail.


The video also highlights LoRa satellite tracking, showing how low-cost boards and antennas can pick up signals from low earth orbit satellites.  Additional wireless builds coming from current or upcoming editions of Elektor Magazine include a 4G SMS remote control, an inductive AM transmitter, and a Raspberry Pi Zero web-streaming camera.

We also take a look at community projects on the Elektor Labs platform, from an HTML-embedded 3D KiCad PCB viewer to an Arduino-controlled power supply with multiple output rails, as well as a GPS-synchronized clock. Finally, the episode gives more detail about our recent introduction of Elektor Academy Pro, with advanced training kits, courses and details of upcoming conferences. Watch the episode below:

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