A well maintained soldering machine is a happy soldering machine. Here you can see a solder nozzle being tinned in preparation for a big run of new Metro M4 boards.
Tinning is done by dousing the nozzle in liquid flux before fully submerging it in molten solder, thus removing any impurities from its surface and coating it in a protective (and very pretty) layer of tin.
Make a robot friend with Adafruit’s CRICKIT – A Creative Robotics & Interactive Construction Kit. It’s an add-on to our popular Circuit Playground Express, FEATHER and other platforms to make and program robots with CircuitPython, MakeCode, and Arduino. Start controlling motors, servos, solenoids. You also get signal pins, capacitive touch sensors, a NeoPixel driver and amplified speaker output. It complements & extends your boards so you can still use all the goodies on the microcontroller, now you have a robotics playground as well.