| MD_AButton | Library for multiple switches on one analog input. |
| MD_AD9833 | Library for using a AD9833 Programmable Waveform Generator. |
| MD_CirQueue | Library for FIFO queue implemented as a Ring Buffer. |
| MD_Cubo | Library for device independent LED Cubes. |
| MD_DS1307 | Library for using a DS1307 Real Time Clock. |
| MD_DS3231 | Library for using a DS3231 Real Time Clock. |
| MD_HX711 | Library to read load cells using HX711 weight scale ADC |
| MD_KeySwitch | Library for digital switches. |
| MD_LM335A | Library for using a LM335A temperature sensor. |
| MD_MAXPanel | Implements functions to manage a panel of MAX72xx based LED modules |
| MD_MAX72XX | Implements functions that allow the MAX72xx (eg, MAX7219) to be used for LED matrices (64 individual LEDs) |
| MD_Menu | Library for displaying and managing menus on displays with with up to 2 lines. |
| MD_MIDIFile | Arduino Standard MIDI File (SMF) Player |
| MD_MSGEQ7 | Implements functions for the MSGEQ7 7 band equalizer IC |
| MD_OnePin | One pin serial comms link |
| MD_Parola | LED matrix text display special effects |
| MD_PWM | PWM on arbitrary pins |
| MD_REncoder | Library for Rotary Encoder |
| MD_SmartCar | Core functions for movement control of a 2 wheeled SmartCar Robot using DC motors. |
| MD_SmartCar2 | Core functions for movement control of a 2 wheeled SmartCar Robot using Stepper motors. |
| MD_SN76489 | Library for SN76489 sound generator. |
| MD_Stepper | Stepper Motor control |
| MD_TCS230 | Library for TCS230 TCS3200 Colour Sensor |
| MD_TTT | Tic-Tac-Toe game logic library |
| MD_UISwitch | Library for Universal User Interface Switches. |
| MD_YM2413 | Library for Yamaha YM2413 sound synthesizer. |
| MD_YX5300 | Library for Serial MP3 Player (Catalex YX5300 module) |