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How to fix esp-tls-mbedtls: mbedtls_x509_crt_parse returned -0x2180

Categories: C/C++, Embedded, ESP8266/ESP32, Networking
Uli Köhler

Uli Köhler

1 min read
How to initialize LittleFS in Arduino on the ESP32 (PlatformIO)

Categories: Arduino, Embedded, ESP8266/ESP32, PlatformIO
Uli Köhler

Uli Köhler

1 min read
Does ESP32 (ESP-IDF/Arduino/mbed-tls) support secp384r1 certificates?

Categories: ESP8266/ESP32, Mbed
Uli Köhler

Uli Köhler

0 min read
How to print string as sequence of Hex bytes in Arduino

Categories: Arduino, C/C++
Uli Köhler

Uli Köhler

0 min read
How to install ZeroTier on Teltonika RUTX.../TRB... routers

Categories: Networking
Uli Köhler

Uli Köhler

0 min read
How to layer/composite multiple images using imagemagick (convert)

Categories: ImageMagick
Uli Köhler

Uli Köhler

0 min read
How to convert color to transparency using ImageMagick

Categories: ImageMagick
Uli Köhler

Uli Köhler

0 min read
How to compute distance and bearing of two points represented by Coordinate strings in Python

Categories: Geography, Python
Uli Köhler

Uli Köhler

1 min read
How to compute distance and bearing between two lat/lon points in Python

Categories: Geography, Python
Uli Köhler

Uli Köhler

1 min read
How to parse any lat/lon string in Python using GeoPy

Categories: Geography, Python
Uli Köhler

Uli Köhler

1 min read