GPS devices

Other GPS devices
Fitbit Surge

Garmin Black Bike
Garmin large old pair GPS 12 XL

of course the SATNAV devices
TomTom (3)

STL

Adafruit ultimate GPS

ultimate GPS
CMD set
schematic - good

The Adafruit GPS generates 3V3 compatible serial signals. The photo shows how it is connected to a PL2303 USB serial converter.
Red wire to VIN
Black wire to GND
White wire to TX

The green wire can be connected to the RX but is not needed to use the GPS as a test serial data generating device...

embedded pi

rm x2s

rm x2s info
sonyrm
arduino
also Google : sony rm-x2s compatibility

Tags:

donkeycar

libusb


sudo apt-get install libudev-dev libsystemd-dev


cc -g -O0 --std=gnu99 --pedantic `pkg-config --cflags libusb-1.0` stlink.o stlinkv2.o espstlink.o main.o byte_utils.o ihex.o srec.o stm8.o `pkg-config --libs libusb-1.0` -o stm8flash

Note, in above,

pkg-config --cflags libusb-1.0

produces

-I/usr/include/libusb-1.0

The following is the command that made stm8flash to work:

sudo apt-get install libusb-1.0

des

Tags:

rust

Environment variables

Environment variables
setting a temporary environment variable

RUST_BACKTRACE=1 something=2 gtk_colours

the gtk_colours executable can be used to display environment variables.
gtk_colours is a program available on my Github site.
This also illustrates the bash shell ability to insert an environment variable on the command line.

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