Technical Articles

Using Circuitpython on the Challenger RP2040 LoRa to send and receive data packets.

The Challenger RP2040 LoRa boards now also have their own Circuitpython image that can be downloaded and used to send and receive data packets. The…

Getting the Challenger LoRa up on The Things Network – #1

The Challenger RP2040 LoRa board is fully compatible with the The Things Network (TTN) and in this short article we will show you the steps…

Getting the Challenger LoRa up on The Things Network – #2

Now it’s about time to get the Challenger RP2040 LoRa board configured and flashed with some firmware so that we can start seeing some data…

Using RP2040 PIO Uarts with the WiFi module

To obtain highest possible network speed with our Challenger RP2040 WiFi/BLE board we need to switch from using the standard UART to using RP2040 Programmable…

Measure network speed on ESP devices

This example code implements a simple iperf test server that can be used to measure how much data you can push through the WiFi link…

Using the RGB LED onboard the challenger boards

Here’s super simple example on how to make the RGB LED on our challenger boards blink with all its colors. And that is all that…

SPI communication with the ESP32C3

This is a simple example on how to communicate, over SPI, with the ESP32C3 on board the Challenger RP2040 WiFi/BLE board. The example implements a…