Looking for a poor-man’s capacitive touch sensor using only the ADC on your MCU and a couple discrete components? NXP shows how it can be done in AN11023: Capacitive Touch Sensing using the LPC11xx (here for .zip file with code). (Note: While this app note is aimed at the ARM Cortex M0 LPC11xx series of chips, the information is easily transferable to any other MCU.)
Have an amazing project to share? Join the SHOW-AND-TELL every Wednesday night at 7:30pm ET on Google+ Hangouts.
Join us every Wednesday night at 8pm ET for Ask an Engineer!
Learn resistor values with Mho’s Resistance or get the best electronics calculator for engineers “Circuit Playground” – Adafruit’s Apps!
Maker Business — HAX Hardware Trends 2017
Wearables — Looking older
Electronics — Interference is everywhere!
Biohacking — “Earable” Sensor Detects Core Body Temperature
Sorry, the comment form is closed at this time.