Hi, Im looking for a devlce to measure an engines RPM. I have a 3.3v logic line that is pulled high for a pulse once per revolution of the RPM but need an i2c device to count these pulses and send my device an RPM value. Maximum RPM (and pulses per minute) would be 11,000RPM.
Is this something the M5Stack Ext Encoder Unit (STM32F030) can do?
or can I use M5Stack Extend I/O 2 Unit (STM32F0) ?
Thanks.
Mike.
Hi All,
I am working on a project and have a wish to have custom firmware for the k-meter ISO unit to use the broken out pins on the board to measure the RPM of a motor.
I am currently measuring engine speed using a Hall effect sensor and interrupts on ESP32 but would love to move this hardware onto the kmeter ISO board and have the RPM value available over I2C.
Ive had a look at the code here https://github.com/m5stack/M5Unit-KMeter-Internal-FW and dont quite know where to start or even if this future will work.
I'll happily pay a small amount to anyone that can help with this.
Regards,
Mike.