- Out-of-Stock
New products
New products New products
zł119.00
Delivery date unknown
zł119.00
Delivery date unknown
16-Button AD Keypad 4x4 Module with Analog Output - Waveshare 4431
ID: 560202
16 buttons controlled by only 1 AD port
Overview
The AD Keypad provides 16 push buttons, and takes up only 1 AD port for controlling. It's suitable for applications where the AD ports are sufficient yet I/O ports are lacking of.
Features
16 push buttons, detection interface
Parameters and Sampling
- AD ideal value: when button pressed, Viv = (button index / 16) x Vref
AD real value: when button pressed, Vrv = (1 ± 6%) x Viv
For instance, suppose Vref = 5, 8th button was pressed, then Viv = (8 / 16) x 5 = 2.5, Vrv = (1 ± 6%) x 2.5, equals to 2.35-2.65 - Abbreviation
- Vref: AD reference voltage
- iv: ideal value
- rv: real value
| ADC Value Detection Range | Measurement Data (Vref=3.3V) | Measurement Data (Vref = 5V) | ||||||
|---|---|---|---|---|---|---|---|---|
| Buttons | 10-bit ADC | 8-bit ADC | Real Value Sampling (V) | Error (V) | Ideal Value (V) | Real Value Sampling (V) | Error (V) | Ideal Value(V) |
| 0 | 0-4 | 0-1 | 0 | 0 | 0 | 0 | 0 | 0 |
| 1 | (1±6%)x64 | (1±6%)x16 | 0.2054 | -0.00085 | 0.20625 | 0.3112 | -0.0013 | 0.3125 |
| 2 | (1±6%)x128 | (1±6%)x32 | 0.4117 | -0.0008 | 0.4125 | 0.6238 | -0.0012 | 0.625 |
| 3 | (1±6%)x192 | (1±6%)x48 | 0.6233 | 0.00455 | 0.61875 | 0.9444 | 0.0069 | 0.9375 |
| 4 | (1±6%)x256 | (1±6%)x64 | 0.8242 | -0.0008 | 0.825 | 1.2487 | -0.0013 | 1.25 |
| 5 | (1±6%)x320 | (1±6%)x80 | 1.0304 | -0.00085 | 1.03125 | 1.5612 | -0.0013 | 1.5625 |
| 6 | (1±6%)x384 | (1±6%)x96 | 1.2355 | -0.002 | 1.2375 | 1.8719 | -0.0031 | 1.875 |
| 7 | (1±6%)x448 | (1±6%)x112 | 1.4448 | 0.00105 | 1.44375 | 2.189 | 0.0015 | 2.1875 |
| 8 | (1±6%)x512 | (1±6%)x128 | 1.6541 | 0.0041 | 1.65 | 2.5061 | 0.0061 | 2.5 |
| 9 | (1±6%)x576 | (1±6%)x144 | 1.8637 | 0.00745 | 1.85625 | 2.8237 | 0.0112 | 2.8125 |
| 10 | (1±6%)x640 | (1±6%)x160 | 2.0732 | 0.0107 | 2.0625 | 3.1411 | 0.0161 | 3.125 |
| 11 | (1±6%)x704 | (1±6%)x176 | 2.2672 | -0.00155 | 2.26875 | 3.435 | -0.0025 | 3.4375 |
| 12 | (1±6%)x768 | (1±6%)x192 | 2.4712 | -0.0038 | 2.475 | 3.7441 | -0.0059 | 3.75 |
| 13 | (1±6%)x832 | (1±6%)x208 | 2.6789 | -0.00235 | 2.68125 | 4.0588 | -0.0037 | 4.0625 |
| 14 | (1±6%)x896 | (1±6%)x224 | 2.8902 | 0.0027 | 2.8875 | 4.3789 | 0.0039 | 4.375 |
| 15 | (1±6%)x960 | (1±6%)x240 | 3.1092 | 0.01545 | 3.09375 | 4.7107 | 0.0232 | 4.6875 |
How to detect and handle in your code
For 10-bit ADC, the 8th button generates ADC value between (1±6%)x512, the equivalence of "481-543". If the ADC value had been detected to be "510-518" in the code, the 8th button's supposed to have been pressed.
For 8-bit ADC, the 8th button generates ADC value between (1±6%)x128, the equivalence of "120-136". If the ADC value had been detected to be "124-128" in the code, the 8th button's supposed to have been pressed.
Informations
-
Weight: 0.016 kg
- AD Keypad × 1
560202
Manufacturer BTC Korporacja sp. z o. o. Lwowska 5 05-120 Legionowo Poland sprzedaz@kamami.pl 22 767 36 20
Responsible person BTC Korporacja sp. z o. o. Lwowska 5 05-120 Legionowo Poland sprzedaz@kamami.pl 22 767 36 20
Other products in the same category (16)
No product available!
No product available!
Inspired by the art of Celtic and Scandinavian medieval craftsmen, as translated through intelligent 21st century engineering, Ugears is proud to introduce the Hurdy-Gurdy—the world’s first (as far as we know!) mechanical model for self-assembly that is also a musical instrument. This extraordinary mechanical model kit is truly one of the gems of our catalogue. This isn\'t just a toy, it\'s a full-fledged musical instrument that you build yourself. The Hurdy-Gurdy has a sound that\'s perfect for folk melodies or dancing, bringing medieval times into the present day. When you purchase the Hurdy-Gurdy you will experience a unique combination: the fun and challenge of building, the appreciation of outstanding engineering and design, and the joy of music. UGears 70030
Retired
No product available!
No product available!
The M5Stack U115 evaluation board is an advanced LoRa communication module, operating at 915 MHz, ideal for IoT and remote monitoring applications. Thanks to the support of the LoRaWAN protocol, it provides reliable data transmission over a long distance, even several kilometers, with low power consumption, making it perfect for applications in agriculture, smart cities and industrial monitoring
Retired
No product available!
Wixel Pair (Fully Assembled) + USB Cable
Retired
No product available!
An expansion board (HAT) with a Sipeed module designed to run artificial intelligence (AIoT) in cooperation with a Raspberry Pi. Seeed Studio 102991187
Retired
No product available!
Jacek Nowak, Wiesław Winiecki, Sławomir Stanik
Delivery date unknown
No product available!
No product available!
XBee Pro Module - ZB Series 2 - 63mW without Wire Antenna, Digi International, RoHS
Retired
No product available!
Module with a 3-axis MMA8452Q accelerometer. The system has a configurable measurement scale of ±2g/±4g/±8g. It is supplied with the voltage from 1.95 to 3.3 V and communicates via the I2C interface. SparkFun SEN-12756
Retired
No product available!
No product available!
Neodymium rectangular magnet with dimensions of 10x5mm a and a height of 3 mm.
Retired
No product available!
Switch (relay) controlled via GSM / GPRS network. The switch (relay) allows remote control of the device powered from 230 V mains with a maximum power consumption of 16 A. The device works with the eWeLnik smartphone application
Delivery date unknown
No product available!
Permanent cylindrical neodymium magnet with a diameter of 10 mm and a height of 2 mm.
Retired
No product available!
No product available!
16 buttons controlled by only 1 AD port