Interfacing with Digital Calipers

 Caliper-Digital-Data-Port Pinout-Of-Imported-Digital-Caliper

Interfacing with Digital Calipers via EMSL link blog.

Besides the LCD display, many calipers have a digital output port for their data. Name-brand calipers charge significantly more money for the inclusion of a data port, even though they often build it into all of their models, only to be hidden by the plastic case.

Calipers with data outputs can be used as positioning sensors in robotics by attaching one caliper jaw to a moving part, and the other jaw to a fixed part. The absolute and relative position can be determined to a hundredth of an inch. Many hobbyists attach calipers to their milling machine to create inexpensive digital readouts (DRO).

Another potential reason to interface to an electronic caliper is to quickly log dimensions for statistical analysis or quality control.
In order for a microcontroller to read a caliper, you need to know the pinout and data format. These specifications vary from manufacturer to manufacturer. This article provides the measured timing and bit formats for two brands of digital calipers that I own.


Stop breadboarding and soldering – start making immediately! Adafruit’s Circuit Playground is jam-packed with LEDs, sensors, buttons, alligator clip pads and more. Build projects with Circuit Playground in a few minutes with the drag-and-drop MakeCode programming site, learn computer science using the CS Discoveries class on code.org, jump into CircuitPython to learn Python and hardware together, TinyGO, or even use the Arduino IDE. Circuit Playground Express is the newest and best Circuit Playground board, with support for CircuitPython, MakeCode, and Arduino. It has a powerful processor, 10 NeoPixels, mini speaker, InfraRed receive and transmit, two buttons, a switch, 14 alligator clip pads, and lots of sensors: capacitive touch, IR proximity, temperature, light, motion and sound. A whole wide world of electronics and coding is waiting for you, and it fits in the palm of your hand.

Join 27,000+ makers on Adafruit’s Discord channels and be part of the community! http://adafru.it/discord

Have an amazing project to share? The Electronics Show and Tell is every Wednesday at 7pm ET! To join, head over to YouTube and check out the show’s live chat – we’ll post the link there.

Join us every Wednesday night at 8pm ET for Ask an Engineer!

Follow Adafruit on Instagram for top secret new products, behinds the scenes and more https://www.instagram.com/adafruit/

CircuitPython – The easiest way to program microcontrollers – CircuitPython.org


Maker Business — To make it through a tough business cycle, layoffs should be a last resort

Wearables — Little pixel jackets

Electronics — Aliasing is ugly!

Python for Microcontrollers — Python on Microcontrollers Newsletter: CircuitPython supported by 70 SBCs and more! #Python #Adafruit #CircuitPython @micropython @ThePSF

Adafruit IoT Monthly — OpenCV Critter Cam, LoraWAN on Raspberry Pi 2040, and more!

Microsoft MakeCode — MakeCode Arcade Turns One!

EYE on NPI — Maxim’s Himalaya uSLIC Step-Down Power Module #EyeOnNPI @maximintegrated @digikey

New Products – Adafruit Industries – Makers, hackers, artists, designers and engineers! — New Products 3/03/2021 Feat. Adafruit Feather RP2040! @adafruit #adafruit #newproducts

Get the only spam-free daily newsletter about wearables, running a "maker business", electronic tips and more! Subscribe at AdafruitDaily.com !



No Comments

No comments yet.

Sorry, the comment form is closed at this time.