{"product_id":"adc-pi","title":"ADC Pi","description":"\u003cdiv class=\"col span5\"\u003e\n\u003cp\u003eThe ADC Pi Zero is an 8 channel 17 bit analogue to digital converter designed to work with the Raspberry Pi Zero. The ADC Pi Zero is based on two Microchip MCP3424 A\/D converters each containing 4 analogue inputs. The MCP3424 is a delta-sigma A\/D converter with low noise differential inputs.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eSoldering required! This product comes unassembled and unsoldered.\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003eWe designed the ADC Pi Zero to work as a single ended A\/D converter using the internal 2.048V reference voltage with the -V pins tied to ground. A voltage divider on the ADC Pi Zero board brings the input voltage range to a much more useful 0 – 5.06V. In this configuration the sample size is 17 bits for each channel.\u003c\/p\u003e\n\u003cdiv\u003e\n\u003ch2\u003eIntroduction:\u003c\/h2\u003e\n\u003cp\u003eThe ADC Pi Zero is powered through the host Raspberry Pi Zero using the GPIO port and extended pins on the GPIO connector allow you to stack the ADC Pi Zero along with other expansion boards.\u003c\/p\u003e\n\u003cp\u003eThe two MCP3424 A\/D converters communicate via i2c to the host Raspberry Pi giving you eight analogue inputs to use. A logic level converter is included on the ADC Pi Zero board giving you a buffered 5V i2c port making it easy to add other I2C devices which operate at 5 volts without damaging the raspberry pi 3.3 volt i2c port. The i2c buffer uses N-channel mosfets with a maximum drain current of 100mA.\u003c\/p\u003e\n\u003cp\u003eThe I2C address bits are selectable using the on-board jumpers. The MCP3424 supports up to 8 different I2C addresses so with two A\/D converters on each ADC Pi Zero you can stack up to 4 ADC Pi Zero boards on a single Raspberry Pi Zero giving you 32 ADC inputs.\u003c\/p\u003e\n\u003cp\u003eThe MCP3424 contains an on-board 2.048V reference voltage with an input range of ±2.048V differentially (full scale range of 4.096V\/PGA). A programmable Gain Amplifier gives the user a selectable gain of x1, x2, x4 or x8 before the analogue to digital conversion takes place.\u003c\/p\u003e\n\u003cp\u003eThe data rate for analogue to digital conversions is 3.75 (17 bit), 15 (15 bit), 60 (13 bit) or 240 (11 bit) samples per second. Data rate and resolution can be configured within software using the I2C interface.\u003c\/p\u003e\n\u003cp\u003eWe have a knowledge base article, ADC Sample Rate Comparisonwhich has more detailed sample information and test scripts to compare the different MCP2424 ADC chip bit and sample rates.\u003c\/p\u003e\n\u003cp\u003eUnused inputs should be tied to ground.\u003c\/p\u003e\n\u003cp\u003eIf you want to sample a higher input voltage you can use our ADC Pi Input Voltage Calculator to find the additional resistors and calculation values needed.\u003c\/p\u003e\n\u003ch2\u003eI2C Address Selection\u003c\/h2\u003e\n\u003cp\u003eThe MCP3424 analogue to digital converter contains two address select pins which can be tied to Vss, Vdd or left floating. This gives 8 possible I2C addresses for each chip. The ADC Pi Zero contains two MCP3424 chips so you can stack up to 4 ADC Pi Zero boards on a single Raspberry Pi. To simplify address selection on the ADC Pi Zero we have included a set of address selection pins which can be configured using the included jumpers. The illustrations below show the four recommended configurations for your ADC Pi Zero and the associated I2C addresses.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eNote:\u003c\/strong\u003e\u003cbr\u003eDisconnect the ADC Pi Zero from the Raspberry Pi before changing the address pins. You may need to short the 5V and ground with a resistor to discharge the capacitors in order for the new addresses to be recognised.\u003c\/p\u003e\n\u003cp\u003e\u003cimg src=\"https:\/\/www.abelectronics.co.uk\/docs\/stock\/raspberrypi\/adcpiplus\/address-1.png?width=700\" alt=\"Address selection pins\"\u003e\u003c\/p\u003e\n\u003ch3\u003eI\u003csup\u003e2\u003c\/sup\u003eC Address Table\u003c\/h3\u003e\n\u003ctable\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eAdr 0\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e\u003cstrong\u003eAdr 1\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e\u003cstrong\u003eI2C Address\u003c\/strong\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eLow or Float\u003c\/td\u003e\n\u003ctd\u003eLow or Float\u003c\/td\u003e\n\u003ctd\u003e0x68\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eLow\u003c\/td\u003e\n\u003ctd\u003eFloat\u003c\/td\u003e\n\u003ctd\u003e0x69\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eLow\u003c\/td\u003e\n\u003ctd\u003eHigh\u003c\/td\u003e\n\u003ctd\u003e0x6A\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eFloat\u003c\/td\u003e\n\u003ctd\u003eLow\u003c\/td\u003e\n\u003ctd\u003e0x6B\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eHigh\u003c\/td\u003e\n\u003ctd\u003eLow\u003c\/td\u003e\n\u003ctd\u003e0x6C\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eHigh\u003c\/td\u003e\n\u003ctd\u003eFloat\u003c\/td\u003e\n\u003ctd\u003e0x6D\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eHigh\u003c\/td\u003e\n\u003ctd\u003eHigh\u003c\/td\u003e\n\u003ctd\u003e0x6E\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eFloat\u003c\/td\u003e\n\u003ctd\u003eHigh\u003c\/td\u003e\n\u003ctd\u003e0x6F\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\u003cdiv\u003e\n\u003ch3\u003e\u003cbr\u003e\u003c\/h3\u003e\n\u003ch3\u003eWarning\u003c\/h3\u003e\n\u003cp\u003eDo not under any circumstanced connect the two centre pins together. This will create a direct short between the 5V and ground pins and will damage or destroy your Raspberry Pi and ADC Pi Zero board.\u003c\/p\u003e\n\u003cp\u003e\u003cimg src=\"https:\/\/www.abelectronics.co.uk\/docs\/stock\/raspberrypi\/adcpiplus\/addresswarning.png?width=700\" alt=\"\"\u003e\u003c\/p\u003e\n\u003c\/div\u003e\n\u003ch3\u003eRecommended Address Configurations\u003c\/h3\u003e\n\u003cp\u003e\u003cstrong\u003eConfiguration 1:\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003eAnalogue Channels 1-4 = I2C Address: 0x68\u003cbr\u003eAnalogue Channels 5-8 = I2C Address: 0x69\u003c\/p\u003e\n\u003cp\u003e\u003cimg src=\"https:\/\/www.abelectronics.co.uk\/docs\/stock\/raspberrypi\/adcpiplus\/addressconfig1.png?width=700\" alt=\"Address Configuration 1\"\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eConfiguration 2:\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003eAnalogue Channels 1-4 = I2C Address: 0x6A\u003cbr\u003eAnalogue Channels 5-8 = I2C Address: 0x6B\u003c\/p\u003e\n\u003cp\u003e\u003cimg src=\"https:\/\/www.abelectronics.co.uk\/docs\/stock\/raspberrypi\/adcpiplus\/addressconfig2.png?width=700\" alt=\"Address Configuration 2\"\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eConfiguration 3:\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003eAnalogue Channels 1-4 = I2C Address: 0x6C\u003cbr\u003eAnalogue Channels 5-8 = I2C Address: 0x6D\u003c\/p\u003e\n\u003cp\u003e\u003cimg src=\"https:\/\/www.abelectronics.co.uk\/docs\/stock\/raspberrypi\/adcpiplus\/addressconfig3.png?width=700\" alt=\"Address Configuration 3\"\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eConfiguration 4:\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003eAnalogue Channels 1-4 = I2C Address: 0x6E\u003cbr\u003eAnalogue Channels 5-8 = I2C Address: 0x6F\u003c\/p\u003e\n\u003cp\u003e\u003cimg src=\"https:\/\/www.abelectronics.co.uk\/docs\/stock\/raspberrypi\/adcpiplus\/addressconfig4.png?width=700\" alt=\"Address Configuration 4\"\u003e\u003c\/p\u003e\n\u003ch2\u003eDatasheets\u003c\/h2\u003e\n\u003cp\u003eMCP3424\u003c\/p\u003e\n\u003ch2\u003eCompatibility Chart\u003c\/h2\u003e\n\u003ctable class=\"compatibility\"\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003ctd\u003eRaspberry Pi Model A\u003c\/td\u003e\n\u003ctd\u003e\u003cspan class=\"compatibilityno\"\u003eNo\u003c\/span\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eRaspberry Pi Model B\u003c\/td\u003e\n\u003ctd\u003e\u003cspan class=\"compatibilityno\"\u003eNo\u003c\/span\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eRaspberry Pi 1 Model A+\u003c\/td\u003e\n\u003ctd\u003e\u003cspan class=\"compatibilityyes\"\u003eYes\u003c\/span\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eRaspberry Pi 1 Model B+\u003c\/td\u003e\n\u003ctd\u003e\u003cspan class=\"compatibilityyes\"\u003eYes\u003c\/span\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eRaspberry Pi 2 Model B\u003c\/td\u003e\n\u003ctd\u003e\u003cspan class=\"compatibilityyes\"\u003eYes\u003c\/span\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eRaspberry Pi 3 Model B\u003c\/td\u003e\n\u003ctd\u003e\u003cspan class=\"compatibilityyes\"\u003eYes\u003c\/span\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eRaspberry Pi Zero\u003c\/td\u003e\n\u003ctd\u003e\u003cspan class=\"compatibilityyes\"\u003eYes\u003c\/span\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eODroid C1\u003c\/td\u003e\n\u003ctd\u003e\u003cspan class=\"compatibilityyes\"\u003eYes\u003c\/span\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eODroid C2\u003c\/td\u003e\n\u003ctd\u003e\u003cspan class=\"compatibilityyes\"\u003eYes\u003c\/span\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"col span5\"\u003e\n\u003ch2\u003eFeatures\u003c\/h2\u003e\n\u003cul\u003e\n\u003cli\u003e8 x 17-bit 0 to 5V Single Ended Inputs\u003c\/li\u003e\n\u003cli\u003eControl via the Raspberry Pi I2C port\u003c\/li\u003e\n\u003cli\u003eStack up to 4 ADC Pi Zero boards on a single Raspberry Pi\u003c\/li\u003e\n\u003cli\u003eJumper selectable I2C addresses\u003c\/li\u003e\n\u003cli\u003eBuffered 5V I2C port\u003c\/li\u003e\n\u003cli\u003eBased on the MCP3424 from Microchip Technologies Inc\u003c\/li\u003e\n\u003cli\u003eSingle Ended full-scale range of 5.0V\u003c\/li\u003e\n\u003cli\u003eOn-board 2.048V reference voltage (Accuracy ± 0.05%, Drift: 15 ppm\/°C)\u003c\/li\u003e\n\u003cli\u003eOn-Board Programmable Gain Amplifier (PGA): Gains of 1, 2, 4 or 8\u003c\/li\u003e\n\u003cli\u003eProgrammable Data Rate Options:\u003cbr\u003e- 3.75 SPS (17 bits)\u003cbr\u003e- 15 SPS (15 bits)\u003cbr\u003e- 60 SPS (13 bits)\u003cbr\u003e- 240 SPS (11 bits)\u003c\/li\u003e\n\u003cli\u003eOne-Shot or Continuous Conversion Options\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003eNot sure which ADC you need ? Check our Analogue to Digital Buyers guide to compare our ADC expansion boards.\u003c\/p\u003e\n\u003ch2\u003eInput Ratings \u0026amp; Specifications\u003c\/h2\u003e\n\u003ctable cellspacing=\"0\" cellpadding=\"0\" border=\"0\"\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003ctd\u003eVdd (5V pin on I2C bus)\u003c\/td\u003e\n\u003ctd\u003e5.0V\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eAll AD inputs and outputs\u003c\/td\u003e\n\u003ctd\u003eVSS–0.4V to VDD+0.4 V\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eCurrent at Input Pins\u003c\/td\u003e\n\u003ctd\u003e±2 mA\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eI2C SDA\/SCL voltage\u003c\/td\u003e\n\u003ctd\u003e5.0 V\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eI2C port current\u003c\/td\u003e\n\u003ctd\u003e100 mA\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\u003ch2\u003e\n\u003cbr\u003eBoard Layout\u003c\/h2\u003e\n\u003cp\u003e\u003cimg src=\"https:\/\/www.abelectronics.co.uk\/docs\/stock\/raspberrypi\/adcpizero\/adcpizero_boardlayout_small.svg?width=700\" alt=\"Board Layout\"\u003e\u003c\/p\u003e\n\u003ch2\u003eSchematic\u003c\/h2\u003e\n\u003cp\u003e\u003cimg src=\"https:\/\/www.abelectronics.co.uk\/docs\/stock\/raspberrypi\/adcpizero\/adcpizero_schematic.png?width=700\" alt=\"Click to download\"\u003e\u003cbr\u003eClick to download schematic PDF.\u003c\/p\u003e\n\u003ch2\u003eMechanical Drawings\u003c\/h2\u003e\n\u003cp\u003e\u003cimg src=\"https:\/\/www.abelectronics.co.uk\/docs\/stock\/raspberrypi\/adcpizero\/adcpizero_mechanical_small.svg?width=700\" alt=\"Mechanical Drawing\"\u003e\u003c\/p\u003e\n\u003cp\u003eClick image to enlarge\u003c\/p\u003e\n\u003ch2\u003eSample Code\u003c\/h2\u003e\n\u003cp\u003eWe have Arduino, C, Windows 10 IOT, Python 2 and Python 3 libraries available for this expansion board. You can download all of the libraries from github at:\u003c\/p\u003e\n\u003cp\u003ehttps:\/\/github.com\/abelectronicsuk\/\u003c\/p\u003e\n\u003cp\u003eDownload the \u003cstrong\u003eArduino libraries\u003c\/strong\u003efrom: https:\/\/github.com\/abelectronicsuk\/ABElectronics_Arduino_Libraries\u003c\/p\u003e\n\u003cp\u003eTo download the \u003cstrong\u003eC libraries\u003c\/strong\u003e to your Raspberry Pi type in terminal:\u003c\/p\u003e\n\u003cp\u003e\u003ccode\u003egit clone https:\/\/github.com\/abelectronicsuk\/ABElectronics_C_Libraries.git\u003c\/code\u003e\u003c\/p\u003e\n\u003cp\u003eTo download the \u003cstrong\u003ePython 2\u003c\/strong\u003e libraries to your Raspberry Pi type in terminal:\u003c\/p\u003e\n\u003cp\u003e\u003ccode\u003egit clone https:\/\/github.com\/abelectronicsuk\/ABElectronics_Python_Libraries.git\u003c\/code\u003e\u003c\/p\u003e\n\u003cp\u003eTo download the \u003cstrong\u003ePython 3\u003c\/strong\u003e libraries to your Raspberry Pi type in terminal:\u003c\/p\u003e\n\u003cp\u003e\u003ccode\u003egit clone https:\/\/github.com\/abelectronicsuk\/ABElectronics_Python3_Libraries.git\u003c\/code\u003e\u003c\/p\u003e\n\u003cp\u003eDownload the \u003cstrong\u003eWindows 10 IOT libraries\u003c\/strong\u003e from:https:\/\/github.com\/abelectronicsuk\/ABElectronics_Win10IOT_Libraries\/\u003c\/p\u003e\n\u003cp\u003e\u003cimg title=\"Download Python Code Samples\" src=\"https:\/\/www.abelectronics.co.uk\/docs\/pythondownload.svg?width=700\" alt=\"Download Python 2 and 3 code samples\"\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cimg title=\"Download Arduino Code Samples\" src=\"https:\/\/www.abelectronics.co.uk\/docs\/arduino.svg?width=700\" alt=\"Download Arduino code samples\"\u003e\u003c\/p\u003e\n\u003ch2\u003eTutorials\u003c\/h2\u003e\n\u003cp\u003eWe have a range of tutorials for the ADC Pi, ADC Pi Zero and ADC Pi Plus in our Knowledge Base\u003c\/p\u003e\n\u003ch3\u003eADC Pi Zero Tutorials\u003c\/h3\u003e\n\u003carticle id=\"content\"\u003e\n\u003cdiv id=\"pagecontent\"\u003e\n\u003ch2\u003eAssembly Instructions\u003c\/h2\u003e\n\u003cp\u003eThe ADC Pi Zero is supplied with the 40 pin GPIO connector and the 12 pin address connector unsoldered. We supply the ADC Pi Zero this way because the Raspberry Pi Zero is also supplied without a GPIO header and the ADC Pi Zero could therefore be fitted both above or below the Raspberry Pi Zero.\u003c\/p\u003e\n\u003cp\u003eBefore using the ADC Pi Zero you will need to solder both connectors onto the PCB. We suggest soldering the 40 pin GPIO connector first and then the address select connector. Soldering the address select connector first will make it difficult to access the three corner pins on the GPIO connector.\u003c\/p\u003e\n\u003ch2\u003ePCB Header Assembly Jig\u003c\/h2\u003e\n\u003cp\u003eDownload and print our PCB Header Assembly Jig to hold your circuit board when soldering the header pins.\u003c\/p\u003e\n\u003cp\u003e\u003cimg src=\"https:\/\/www.abelectronics.co.uk\/docs\/kb\/pcbassemblyjig\/icon-use.png?width=700\" alt=\"Use\"\u003e\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/article\u003e\n\u003c\/div\u003e","brand":"ABelectronics","offers":[{"title":"Default Title","offer_id":44930651684953,"sku":"nyg1789671443105","price":22.41,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0736\/5289\/5833\/files\/adc-pi_1.jpg?v=1789671448","url":"https:\/\/gymflexfit.shop\/products\/adc-pi","provider":"My Store","version":"1.0","type":"link"}