Circuit Playground Proto Gizmo - Bolt-on Perma-Proto Shipping:4-6 Days You may check the latest

You may check the latest version - Gravity: Analog pH Sensor/Meter Kit V2 to meet your requirements and Liquid Sensor Selection Guide to get better familiar with our liquid sensor series

Seeeduino Lotus Cortex-M0+ is an upgraded version of Seeeduino Lotus V1

to control the flow of data as you please

This is the one color version - Red - but we also have a Red Yellow Green Alert Light in the store if you want more versatility

And its contrast can be adjusted manually

Circuit Playground Proto Gizmo - Bolt-on Perma-Proto Shipping:4-6 Days You may check the latestExtend and expand your Circuit Playground projects with a bolt on Perma Proto that lets you connect solderable circuits in a sturdy and reliable fashion. This PCB looks just like a solderless breadboard but has permanently affixed M3 standoffs that act as mechanical and electrical connections. Solder to the gold plated traces to create your custom invention! Each pad of the Circuit Playground has a large oval pad you can connect to, and in the center