v2.1 boards are built

A project log for HC-SR04 I2C Octopus "octosonar"

Connect up to 16 ultrasonic range sensors to an Arduino with I2C bus and one pin

alastair-youngAlastair Young 06/26/2017 at 01:110 Comments

The new boards are built and a very pretty blue they are.

I mounted one up on the greenbot and it works as designed.

I made up a test jig and an arduino sketch to wiggle all the pins and watch them from another PCF8574.

I did run into some timing issues reading from the jig, but those went away when I turned off the Serial.println commentary. I'm thinking there is some weird interaction between the Wire and Serial libraries.

Pictures in the gallery