Sensors

Various sensors can be connected and are supported. There’s a list you can consult with a description of the available parameters at pd2dsy

This page will use the MPR121 touch sensor as an example.

This Page isn’t ready yet

On the page about setting up the custom json file an example for the touchsensor mpr121 is shown.

• Some extra steps explained there are needed (altering the ‘mother’ file component_defs.json that is included in the Toolchain)

• Time based effects like delay or reverb seem to be very unstable/ non functioning with the mpr121

Template structure for parts:

1. Name
2. function - what can it do
3. what it looks like
4. Pins
5. Components json
6. PD example(s)
7. links / references / sources

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Extra list / draft page to implement or link:

In the future I’ll be testing a simple lightsensor, the motion sensor (BNO055), and distance measuring sensor (VL53L1X)

pd2dsy supported Sensors

List of supported / implemented sensors in pd2dsy:

GitHub - electro-smith/pd2dsy: Utility for converting Pure Data (Vanilla) patches to Daisy projects.

Full list in the components_defs.json file:

connecting these sensors to the daisy and adding them in the custom json should be supported.

Note that for e.g. the touchsensor mpr121 there’s a bug where the pins are not getting assigned as intended.

GitHub - electro-smith/pd2dsy: Utility for converting Pure Data (Vanilla) patches to Daisy projects.

BME280 - Humidity sensor

measuring relative humidity, barometric pressure and ambient temperature

Price range:

1 EUR (Aliexpress)- 15 EUR (Adafruit stemma breakout)

Connection / Pins:

I²C and SPI

Adafruit BME280 I2C or SPI Temperature Humidity Pressure Sensor

Humidity Sensor BME280

Humidity sensor measuring relative humidity, barometric pressure and ambient temperature

BME280	—	Returns the temperature in degrees C.
BME280	_temp	Behaves the same as the default option.
BME280	_hum	Returns the humidity in relative percentage.
BME280	_press	Returns the pressure in pascals (1 atm ~= 100 kPa)
BME280	_alt	Returns the estimated altitude in meters

BMP390 - barometric pressure - temperature

The BMP390 is a very small, low-power and low-noise 24-bit absolute barometric pressure sensor. The digital, high-performance sensor is ideally suited for a wide range of altitude tracking applications.

Pressure Sensor BMP390

Adafruit BMP390 - Precision Barometric Pressure and Altimeter

Price range

1 EUR Ali Express

12 EUR Adafruit, Stemma breakout

Pinout / Connection:

BMP390	—	Returns the temperature in degrees C.
BMP390	_temp	Behaves the same as the default option.
BMP390	_press	Returns the pressure in pascals (1 atm ~= 100 kPa)
BMP390	_alt	Returns the estimated altitude in meters

Type	_variant	Behavior
Inputs	—	—
BMP390	—	Returns the temperature in degrees C.
BMP390	_temp	Behaves the same as the default option.
BMP390	_press	Returns the pressure in pascals (1 atm ~= 100 kPa)
BMP390	_alt	Returns the estimated altitude in meters
Hall Sensor	—	Returns the current state of the sensor (0 if no field present, otherwise 1).
Hall Sensor	_count	Returns the number of times the hall sensor has been activated.
TLV93D	—	Returns the magnitude of the field’s force vector in uT (i.e. the amount of field).
TLV93D	_x, _y, _z	Returns the field’s strength in the given axis in uT.
TLV93D	_amount	Behaves the same as the default option.
TLV93D	_azimuth	Returns the field’s azimuth for spherical coordinates.
TLV93D	_polar	Returns the field’s 3D inclination for spherical coordinates.
MPR121	—	Returns whether channel 0 is touched according to the threshold.
MPR121	_ch0 … _ch11	Returns a 1 if the given channel is touched according to the threshold, otherwise 0.
MPR121	_ch0_raw … _ch11_raw	Returns the raw sensor data for the given channel as a 10-bit unsigned integer.
APDS9960	—	Returns the current read gesture (1-4) if detected, otherwise 0.
APDS9960	_gest	Behaves the same as the default option.
APDS9960	_prox	Returns the detected proximity in undefined units (meant for relative distance detection).
APDS9960	_red, _green, _blue, _clear	Returns the detected brightness of the given color as a 16-bit unsigned integer.
VL53L1X	—	Returns the distance measurement in mm.
Neo Trellis	—	Sends a bang when the first button (index 0) is pressed.
Neo Trellis	_0 … _15	Sends a bang when the given button is pressed.
Neo Trellis	_0_falling … _15_falling	Sends a bang when the given button is released.
Neo Trellis	_0_state … _15_state	Returns the current state of the given button (1 = pressed, 0 = released).
BNO055	—	Returns the X component of the accelerometer in m/s^2.
BNO055	_accel_x, _accel_y, _accel_z	Returns the given axis from the accelerometer in m/s^2.
BNO055	_magnet_x, _magnet_y, _magnet_z	Returns the given axis from the magnetometer in uT.
BNO055	_gyro_x, _gyro_y, _gyro_z	Returns the given axis from the gyroscope in dps (degrees per second).
BNO055	_euler_x, _euler_y, _euler_z	Returns the rotation along the given axis in degrees.
BNO055	_linear_accel_x, _linear_accel_y, _linear_accel_z	Returns the linear acceleration in the given axis in m/s^2.
BNO055	_grav_x, _grav_y, _grav_z	Returns the acceleration due to gravity along the given axis in m/s^2.
BNO055	_quat_w, _quat_x, _quat_y, _quat_z	Returns the orientation represented as a quaternion.
Outputs	—
Stepper Motor	—	Expects a floating point value of any arbitrary size, representing the number of steps to rotate. The sign of the number determines direction.
Stepper Motor	_release	Triggers the stepper motor to relax its fields when a positive value is received, allowing the motor to spin freely.
DC Motor	—	Expects a floating point value from -1 to 1. The magnitude controls the speed, the sign controls direction, and a value of zero stops the motor.
Neo Trellis LEDs	_0 … _15	Expects an integer from 0-255 to control the led brightness of the corresponding pad.