The new mother board, in the heart of the arpschuino system.

A new version fully compatible with version 1

The arpschuino is still based on the same micro-controller that the Arduino boards, the ATmega 328. It provide DMX connexion, transmission or reception. To be used on show or other difficult conditions, regulation was particularly neat.

They have multiples applications : dimming led, low voltage lamps, motors. Driving led pixel, electromagnets or relay. Receive data from various sensors. Sending DMX standalone... See differents examples.

You can give an address to arpschuino with the arpdress board and program it with an USB>TTL adaptator. We use the USB BUB from JeeLabs or Modern Device.

arpschuino²    news :

Arpschuino² can work in 5V or 3.3v, making it compatible with most current devices.

The HE10 ports can now provide power supply to devices.

The DMX out is working without jumper, so he was deleted.

DMX and power connectors are now flats and the LEDs have been displaced to facilitate an enclosure development.

A slot for 2 resistors allows to change the analog reference, using a voltage divider bridge.

The devices and source codes used with the arpschuino V1 remains compatible, without any modification.

The default code does not change.

  R2 news:

The arpschuino² R2 can be equipped with either XLR 3 or 5, or classic green connectors.

Protection against reverse polarity has been improved: the first capacitor is now downstream of the protection diode.

The fixing holes have been enlarged for the use of M3 screws.

A multi-turn potentiometer can be added to precisely set the analog reference.

  R3 news:

New 1W resistor for regulation.

Marking gnd in white.

  R4 news:

Reset on the I²C port, allows a remote reset with the arpdress board.

Specifications :

  • 16 IO
  • 6 PWM outputs
  • 6 analog inputs
  • DMX in/out
  • 1 serial port
  • 1 I2C port
  • 1 power led and 1 signal led
  • Power supply: 6 to 15V
  • Operating voltage selectable via a jumper: 3.3 or 5V
  • Dimensions : 87 mm / 67 mm

Price :

  • classic version : 36 €
  • XLR 3 version : 36 €
  • XLR 5 version : 39 €

Options :

  • multi-turn potentiometer : 2 €
  • assembly service : 10 €

The arpschuino² is supplied in kit to assemble yourself. We can do the job for you on request.

 resources :

Assembling an arpschuino² R4(fr+en) : PDF

arpschuino² user guide : PDF (translation in progress)

gabarit arpschuino²r2 : PDF     DWG

The "online store" is not yet developed. If you are interested in our boards, please contact us at