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+⧖Here we discuss microcontrollers (MCUs), single board computers (SBCs), and their accessories, such as Atmel mega and tiny AVRs (Arduinos), PICs, ARM boards such as blue/black pill STM32, ESP8266/32s, RP2040, Raspberry Pi, and others. For general electronics questions (power supplies, level shifting, motor driving, etc.) please ask /ohm/. >where can I find verified quality microcontrollers and other electronic sensors or parts digikey.com mouser.com arrow.com newark.com >but that's too expensive aliexpress.com (many parts here are fake, particularly specific parts out of stock in the above sites) lcsc.com >I need a part that does X and Y, with Z specifications. How can I find it? use DigiKey's or Octopart's parametric part search. Then purchase from one of the sellers listed above. >how do I get started with microcontrollers, where should I start? There is no defined starting point, grab a book and start reading or buy an arduino off ebay/amazon and start messing around. There are a plethora of examples online to get started. >resources: https://github.com/kitspace/awesome-electronics >RISC-V microcontroller list: https://codeberg.org/20-100/Awesome_RISC-V/raw/branch/master/RISC-V_MCU_development_boards.pdf Here we discuss microcontrollers (MCUs), single board computers (SBCs), and their accessories, such as Atmel mega and tiny AVRs (Arduinos), PICs, ARM boards such as blue/black pill STM32, ESP8266/32s, RP2040, Raspberry Pi, and others. For general electronics questions (power supplies, level shifting, motor driving, etc.) please ask /ohm/. >where can I find verified quality microcontrollers and other electronic sensors or parts digikey.com mouser.com arrow.com newark.com >but that's too expensive aliexpress.com (many parts here are fake, particularly specific parts out of stock in the above sites) lcsc.com >I need a part that does X and Y, with Z specifications. How can I find it? use DigiKey's or Octopart's parametric part search. Then purchase from one of the sellers listed above. >how do I get started with microcontrollers, where should I start? There is no defined starting point, grab a book and start reading or buy an arduino off ebay/amazon and start messing around. There are a plethora of examples online to get started. >resources: https://github.com/kitspace/awesome-electronics >RISC-V microcontroller list: https://codeberg.org/20-100/Awesome_RISC-V/raw/branch/master/RISC-V_MCU_development_boards.pdf
𓀐 @aE2zByTy: >a bit of thermal matching A tale as old as digital electronics. The limiting factor for analog electronics is how well manufacturing can match two transistors. Turns out with digital we just have to add bits. What's the underlying physical principle? Does the standard require a response to a probe with a precise and fixed delay so the round trip can be measured? Attenuation wont work as it depends on everything else besides distance.

Can’t you just buy sufficiently matched transistors in a single package? Maybe even the darlingtons in a ULN2003.

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𓀐 @*8b-n-FU

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