Skip to main content

Shop
Learn
Blog
Forums
IO
LIVE!
AdaBox

Search

Sign In | Create Account
Playground
New Guides
Series
Wishlists

Shop
Learn
Blog
Forums
IO
LIVE!
AdaBox

Sign In

0

Learn Categories

3D Printing

AdaBox

Adafruit Products

Arduino Compatibles

Breakout Boards

Circuit Playground

CircuitPython

CLUE

Community Support

Components

Crickit

Customer & Partner Projects

Development Boards

Educators

EL Wire/Tape/Panel

Feather

Gaming

Hacks

Internet of Things - IOT

LCDs & Displays

LEDs

Machine Learning

MakeCode

Maker Business

micro:bit

Microcontrollers

Programming

Raspberry Pi

Robotics & CNC

Sensors

STEMMA

Tools

Trellis

Wearables

Explore

Groups to get your gears turning

Explore Groups
New Guides
Playground

Adafruit MCP3421 18-Bit ADC Downloads

Adafruit MCP3421 18-Bit ADC

by Liz Clark

published January 15, 2024, last edited January 21, 2025

posted in Adafruit Products Arduino Compatibles CircuitPython Breakout Boards STEMMA

Save

New Favorite

×

Please sign in to include this guide in your list of favorites.

You will be redirected back to this guide once you sign in, and can then save this guide as one of your favorites.

Close

Download

Overview
Pinouts
CircuitPython and Python
- Python Docs
Arduino
- Arduino Docs
WipperSnapper
Downloads

Single page
Feedback? Corrections?
Text View

Primary Products

Adafruit MCP3421 18-Bit ADC - STEMMA QT / Qwiic

$5.95
Add to Cart

Featured Products view all

Thermocouple Type-K Glass Braid Insulated Stainless Steel Tip

$9.95
Add to Cart
STEMMA QT / Qwiic JST SH 4-pin Cable - 100mm Long
Out of Stock
STEMMA QT / Qwiic JST SH 4-Pin Cable - 50mm Long

$0.95
Add to Cart
STEMMA QT / Qwiic JST SH 4-pin to Premium Male Headers Cable

$0.95
Add to Cart
STEMMA QT / Qwiic JST SH 4-pin Cable with Premium Female Sockets
Out of Stock
JST SH 4-pin Cable with Alligator Clips - STEMMA QT / Qwiic

$2.95
Add to Cart

1

Beginner

Product guide

Downloads

Files

MCP3421 datasheet
EagleCAD PCB files on GitHub
Fritzing object in the Adafruit Fritzing Library

Schematic and Fab Print

dimensions are in inches

Page last edited May 23, 2024

Text editor powered by tinymce.

Related Guides

Adafruit STEMMA Soil Sensor - I2C Capacitive Moisture Sensor

Adafruit STEMMA Soil Sensor - I2C Capacitive...

By lady ada

128

Introducing ItsyBitsy M0 Express

Introducing ItsyBitsy M0 Express

By lady ada

37

Raspberry Pi Video Synth with Blinka and Processing

Raspberry Pi Video Synth with Blinka and Processing

By Liz Clark

23

Adafruit EyeLights LED Glasses and Driver

Adafruit EyeLights LED Glasses and Driver

By Kattni Rembor

58

top angle view of the display

Adafruit 1.14" 240x135 Color Newxie TFT Display

By Liz Clark

1

Daily UV Index PyPortal Display

Daily UV Index PyPortal Display

10

Make a Tiny iPod from an Old Apple Watch

Tiny Pod - BLE Rotary Encoder for iWatch

By Ruiz Brothers

6

The infinity cube

NeoPixel Infinity Cube

By Ruiz Brothers

163

MLX90640 Thermal Camera with Image Recording

MLX90640 Thermal Camera with Image Recording

By Eduardo Blume

59

How to Scan and Detect I2C Addresses

How to Scan and Detect I2C Addresses

By Carter Nelson

54

Adafruit SCD-40 and SCD-41

Adafruit SCD-40 and SCD-41

By Kattni Rembor

36

QT Py ESP32 Pico top angle view

Adafruit QT Py ESP32 Pico

By Kattni Rembor

36

Adafruit MCP9600 I2C Thermocouple Amplifier

Adafruit MCP9600 I2C Thermocouple Amplifier

By Kattni Rembor

14

Karel the Robot depecited collecting stacks of beepers to complete one of the puzzles

Karel The Robot In CircuitPython

By Tim C

1

Adafruit Feather M4 Express

Adafruit Feather M4 Express

By lady ada

136

Create Wishlist

×

Title

Description

Close

Search

Search

Categories

Contact Us
Tech Support Forums
FAQs
Shipping & Returns
Freebies
Terms of Service
Privacy & Legal
Website Accessibility
LLMs.txt

About Us
Press
Educators
Distributors
Jobs
Gift Cards

"If you can't make a mistake, you can't make anything"

A Minority and Woman-owned Business Enterprise (M/WBE)