M5StickC ADC HAT ADS1100

Description

ADC_HAT is another type of C-HAT specifically design for M5StickC controller. Same as ADC unit, this is an ADC converter component for stickc. Packed with an ADC converter chip ADS1100, which is a fully differential, 16-bit, self-calibrating, delta-sigma A/D converter. Extremely easy to design with and configure, the ADS1100 allows you to obtain precise measurements with a minimum of effort. 
The ADS1100 consists of a delta-sigma A/D converter core with adjustable gain, a clock generator, and an I2C interface. 
ADS1100 itself is able to accept a differential input from -5 ~ +5 V, but we have limited the input to 0~12V by adding on the peripheral circuit design of this IC.

Product Features

• M5StickC Compatible
• Input: 0-12V
• Software Development Platform: Arduino, UIFlow(Blockly, Python)
• ADS1100
  • 16-bits Resolution
  • CONTINUOUS SELF-CALIBRATION
  • SINGLE-CYCLE CONVERSION
  • PROGRAMMABLE GAIN AMPLIFIER GAIN = 1, 2, 4, OR 8
  • LOW NOISE: 4μVp-p
  • PROGRAMMABLE DATA RATE: 8SPS to 128SPS
  • INTERNAL SYSTEM CLOCK
  • I2C INTERFACE: address 0x48

Include

• 1x ADC HAT
• 1x 2 Pin 3.96 Pitch Terminal

Application

• Analog Signal Capture

Learn

Links

• Datasheet - ADS1100

Code

1. Arduino IDE

To get complete code, please click here.

#include <M5StickC.h> #include <Wire.h> #include "ADS1100.h"  ADS1100 ads; #define REF_VOL    3.3 #define ADC_BASE   REF_VOL/32768 void setup(void) {     M5.begin(true,true,false);     // The address can be changed making the option of connecting multiple devices     ads.getAddr_ADS1100(ADS1100_DEFAULT_ADDRESS);   // 0x48, 1001 000 (ADDR = GND)     // The ADC gain (PGA), Device operating mode, Data rate     // can be changed via the following functions     ads.setGain(GAIN_ONE);          // 1x gain(default)     ads.setMode(MODE_CONTIN);       // Continuous conversion mode (default)     ads.setRate(RATE_8);            // 8SPS (default)     ads.setOSMode(OSMODE_SINGLE);   // Set to start a single-conversion     ads.begin(); } void loop() { byte error;     int8_t address;     address = ads.ads_i2cAddress;     // The i2c_scanner uses the return value of     // the Write.endTransmisstion to see if     // a device did acknowledge to the address.     Wire.beginTransmission(address);     error = Wire.endTransmission();     result = ads.Measure_Differential(); } 

Pin Map

Video

Demo