Making Stuff Blog

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ESPHome is pretty neat
ESP8266 and ESP32 modules are pretty neat. They are a nice combination of cheap, featurefull, and usable and, ever since a Hackaday post in 2014 , somehow gained a hacker community that enables a lot of really fun things. Also, apparently if you peel apart your WiFi-enabled IoT devices, you…

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CAT4019/CAV4109 LED drivers
tl;dr: This is a constant-current driver for 3 strands of LEDS, up to 175 mA per LED, 200 mA total, with the LEDs powered by up to 25 V, with each strand having individual control lines. Available in a SOIC-16 package. I'm always looking for LED drivers and other such circuitry. This part (one is…

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Serial ports and making things
I'm plotting out some projects and the things that need to be done in order to make them work. And I realized that there's some very simple starting point steps to wiring and managing things necessary to make things building-block style. So, the fundamentals: Data can flow in a few ways. You can…