Accessory Boards Accessory boards allow you to add specific functionality to your microcontroller-based application. They are available for everything from communication, to storage, to analogue functionality.

Please note that the below list does not include all of the boards available. For a complete list, please see the store.

			Connection Standard Available (What's this?)
Board		Price	General	IDC10	mikroBus
Basic Digital I/O
Input (DIP Switches)		R71.50*
PULL (Pull-Up / Pull-Down Resistors)		R59.50*
4x4 Keypad		R155*
Optocoupler		R365*
Encoder		R210*
Power Transistors		R220*
Communication
Wired Communication
Ethernet (LAN)		R330*
RS232 (Serial Communication)		R135*
USB UART (Serial/RS232 to USB interface)		R155*
USB SPI (SPI to USB interface)		R240*
USB I2C (I2C to USB interface)		R240*
CAN (Controller Area Network)		R310*
CAN-SPI (CAN with SPI interface)		R255*
RS485		R220*
LIN (Local Interconnect Network)		R310*
4-20mA Current Loop		R440*
Fiber Optic		R575*
Wireless Communication
WiFi		R455*
ZigBee / X-Bee		R490*
Bluetooth		R660*
Bluetooth Low Eneregy		R425*
2.4GHz Radio		R195*
868MHz Radio		R975*
LoRa		R895*
Infra-Red		R115*
IrDA		R440*
Energy Harvesting		R660*
GSM / GPRS Communication
Telit GL865		R830*
Quectel M95		R745*
Quectel UG95 (3G)		R1,450*
SIM800H		R945*
uBlox Leon G-100		R1,450*
Storage
MMC/SD Card		R240*
RAM		R180*
Compact Flash		R365*
SerialFlash		R175*
EEPROM		R97*
Display / Touch Panel
LED		R97*
LED Matrix Display		R180*
LED Ring		R275*
Bar Graph (Meter) Display		R210*
7-Segment Display		R175*
TFT (Colour display with touch-panel)		R375*
EVE Graphics Controller [i]		R660*
Touch-Panel Controller		R245*
LCD/GLCD Display Adapters
On-Screen-Display		R595*
Analogue
ADC (Analogue to digital converter)		R290*
LDC (Inductance to digital converter)		R595*
Potentiometer (8 Potentiometers)		R275*
Digital Potentiometer		R105*
DAC (Digital to analogue converter)		R310*
Comparator		R210*
Environment Measurement
Temperature, Humidity & Pressure Measurement
Temperature and Humidity		R275*
Thermocouple (Temperature)		R490*
Infra-Red Thermometer		R975*
Pressure Sensor		R425*
GPS
GPS		R520*
GNSS		R660*
Motion & Position Measurement
Three-Axis Accelerometer		R330*
Tilt Sensor		R225*
Gyroscope		R305*
Compass		R305*
Magnetic Field Detection (Hall Sensor)		R210*
Motion Sensor		R160*
Proximity/Distance Sensor		R205*
Altitude Sensor		R175*
Stretch Measurement		R595*
Force & Weight
Force		R425*
Light & Colour Measurement
Ambient Light Sensor		R195*
Light to Frequency Converter		R310*
UV Light Detector		R415*
Color Sensor		R260*
Line Following		R260*
Chemical Detection
Alcohol Sensor		R180*
Air Quality Sensor		R285*
Ozone Detection (O3)
CO (Carbon Monoxide) Sensor		R285*
LPG (Liquefied Petroleum Gas) Sensor		R260*
Methane Gas Sensor		R260*
Hydrogen Gas Sensor		R260*
Magnetics
Hall Effect Sensor		R210*
Lightning Proximity Detector		R595*
REED Switch		R120*
Timekeeping
Real-Time Clock (with PCF8583)		R365*
Real-Time Clock (with Dallas DS1307)		R365*
Timer		R310*
Audio
Piezo Buzzer (20Hz - 20KHz)		R110*
Audio Codec (MP3 / WMA / etc)		R380*
FM Tuner		R490*
Voice Recognition		R410*
Text To Speech		R660*
Audio Amplifier		R245*
Noise Dectection		R490*
Relay & Motor
Relay		R310*
Bipolar Stepper Motor Driver		R290*
DC Motor Driver		R245*
Buggy Car		R1,900*
Haptic Feedback (Vibration)		R400*
Power
Step-down DC-DC converter		R330*
USB Li-Po Charger		R170*
Voltage Translators		R240*
Current Measurement		R155*
Connectors / Adapters
PS/2		R86.50*
Miscellaneous
Port Expander		R210*
RF-ID Reader (125KHz)		R415*
RF-ID Reader (13.56MHz)		R490*
NFC		R210*
RF Meter		R745*
Capacitive Touch Sensing		R145*
Joystick Input (Hall-Effect Sensor)		R380*
Joystick Input (Analogue)		R345*
PWM (Pulse-Width Modulation)		R260*
Camera		R660*
Fingerprint Sensor		R910*
DALI (Digital Addressable Lighting Interface)		R425*
Unique ID		R155*
3D Gesture Detection / Recognition		R830*
Heart Rate		R330*
Cap Extend click		R310*

About Connection Standards
Most accessory boards are designed to a specific standard, allowing them to be easily connected to development hardware (Development Systems / Ready-Start Systems / PLC Systems).

Note however that this does not mean that they can only be used with hardware featuring the relevant standard - they can of course also all be used with any hardware by manually making the connections to them. The connection standard simply makes things easier when compatible hardware is available.

The three different groups which accessory boards can be classified into, based on the connection standard they employ, are:

General (No Standard) This type has no connection standard. Connections are simply made by soldering wires/pins onto the pads provided. Any of the other types of connection standards (IDC10 / mikroBus) can obviously also be used in this way. Example: A MAX3232 accessory board, connected to a breadboard.

IDC10 Standard This type makes use of the IDC10 connection standard, which exposes the 8 pins of a microcontroller's "port", as well as power and ground. IDC10 Headers are found on MikroElektronika development systems, ready-start systems and PLC systems. An adapter is available for connecting IDC10 accessory boards to mikroBus sockets. Example: A bipolar stepper motor driver accessory board, connected to an EasyPIC7.

mikroBus ("click") Standard This type makes use of the mikroBus standard, which exposes specific pins for SPI, I2C, UART, etc. mikroBus sockets are found on newer MikroElektronika development systems, as well as our Breeze boards and the Clicker boards. Downloads: mikroBus Specification Proteus mikroBus Footprint Example: A mikroBus WiFi PLUS click accessory board, connected to a Breeze board.