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)		R120*
PULL (Pull-Up / Pull-Down Resistors)		R69.50*
4x4 Keypad		R180*
Optocoupler		R425*
Encoder		R245*
Power Transistors		R255*
Communication
Wired Communication
Ethernet (LAN)		R270*
RS232 (Serial Communication)		R160*
USB UART (Serial/RS232 to USB interface)		R180*
USB SPI (SPI to USB interface)		R280*
USB I2C (I2C to USB interface)		R280*
CAN (Controller Area Network)		R365*
CAN-SPI (CAN with SPI interface)		R295*
RS485		R255*
LIN (Local Interconnect Network)		R365*
4-20mA Current Loop		R515*
Fiber Optic		R670*
Wireless Communication
WiFi		R535*
ZigBee / X-Bee		R710*
Bluetooth		R815*
Bluetooth Low Eneregy		R495*
2.4GHz Radio		R225*
868MHz Radio		R1,150*
LoRa		R1,050*
Infra-Red		R135*
IrDA		R510*
Energy Harvesting		R770*
GSM / GPRS Communication
Telit GL865		R970*
Quectel M95		R870*
Quectel UG95 (3G)		R1,200*
SIM800H		R1,100*
uBlox Leon G-100		R1,700*
Storage
MMC/SD Card		R325*
RAM		R210*
Compact Flash		R425*
SerialFlash		R200*
EEPROM		R160*
Display / Touch Panel
LED		R115*
LED Matrix Display		R305*
LED Ring		R495*
Bar Graph (Meter) Display		R245*
7-Segment Display		R200*
TFT (Colour display with touch-panel)		R440*
EVE Graphics Controller [i]		R770*
Touch-Panel Controller		R285*
LCD/GLCD Display Adapters
On-Screen-Display		R690*
Analogue
ADC (Analogue to digital converter)		R485*
LDC (Inductance to digital converter)		R690*
Potentiometer (8 Potentiometers)		R325*
Digital Potentiometer		R120*
DAC (Digital to analogue converter)		R365*
Comparator		R245*
Environment Measurement
Temperature, Humidity & Pressure Measurement
Temperature and Humidity		R325*
Thermocouple (Temperature)		R575*
Infra-Red Thermometer		R1,150*
Pressure Sensor		R495*
GPS
GPS		R610*
GNSS		R770*
Motion & Position Measurement
Three-Axis Accelerometer		R385*
Tilt Sensor		R260*
Gyroscope		R355*
Compass		R355*
Magnetic Field Detection (Hall Sensor)		R245*
Motion Sensor		R185*
Proximity/Distance Sensor		R240*
Altitude Sensor		R205*
Stretch Measurement		R1,100*
Force & Weight
Force		R635*
Light & Colour Measurement
Ambient Light Sensor		R225*
Light to Frequency Converter		R360*
UV Light Detector		R485*
Color Sensor		R305*
Line Following		R305*
Chemical Detection
Alcohol Sensor		R305*
Air Quality Sensor		R335*
Ozone Detection (O3)
CO (Carbon Monoxide) Sensor		R335*
LPG (Liquefied Petroleum Gas) Sensor		R305*
Methane Gas Sensor		R305*
Hydrogen Gas Sensor		R305*
Magnetics
Hall Effect Sensor		R245*
Lightning Proximity Detector		R690*
REED Switch		R140*
Timekeeping
Real-Time Clock (with PCF8583)		R425*
Real-Time Clock (with Dallas DS1307)		R425*
Timer		R365*
Audio
Piezo Buzzer (20Hz - 20KHz)		R60.50*
Audio Codec (MP3 / WMA / etc)		R445*
FM Tuner		R575*
Voice Recognition		R670*
Text To Speech		R910*
Audio Amplifier		R285*
Noise Dectection		R575*
Relay & Motor
Relay		R365*
Bipolar Stepper Motor Driver		R340*
DC Motor Driver		R200*
Buggy Car		R2,200*
Haptic Feedback (Vibration)		R465*
Power
Step-down DC-DC converter		R385*
USB Li-Po Charger		R200*
Voltage Translators		R405*
Current Measurement		R180*
Connectors / Adapters
PS/2		R100*
Miscellaneous
Port Expander		R245*
RF-ID Reader (125KHz)		R485*
RF-ID Reader (13.56MHz)		R575*
NFC		R245*
RF Meter		R870*
Capacitive Touch Sensing		R170*
Joystick Input (Hall-Effect Sensor)		R445*
Joystick Input (Analogue)		R495*
PWM (Pulse-Width Modulation)		R300*
Camera		R770*
Fingerprint Sensor		R1,050*
DALI (Digital Addressable Lighting Interface)		R495*
Unique ID		R180*
3D Gesture Detection / Recognition		R970*
Heart Rate		R385*
Cap Extend click		R365*

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.