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PCB schematic and layout for a raspberry pi shield, that can drive up to 8 dc motors .
Home Page: https://iuno.axoom.cloud/
License: Creative Commons Attribution Share Alike 4.0 International
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Modify the dotstar.so to use spi0.1 with chip select according to #3 .
Optionally add a level shifter according to the Adafruit Dotstar Painter to the shield.
Connect the !OE pins to !CE1 instead to GND.
add labels for GND, CLK and DATA for X6
add connector for at least three input switches:
push button to start production
switch for juice door
switch for control door
add input for a start button IUNO-TDM/MixerFrame#3
add output with open collector for driving the illumination of a button up to 24V
Add author notices and logos to silkscreen:
Establish compatibility with the s.usv Pi hat that uses some GPIOs that the MotorShield uses.
pins used by s.usv
Pin
Name
Usage
MotorShield
Pin 02
DC Power +5V
Stromversorgung
n/a
Pin 03
GPIO 02 (SDA1, I²C)
I²C Datenleitung
n/a
Pin 05
GPIO 03 (SCL1, I²C)
I²C Taktleitung
n/a
Pin 13
GPIO 27 (GPIO_GEN2)
Zustandsüberwachung S.USV
used for M5
Pin 27
ID_SD (I²C ID EEPROM)
ID Datenleitung
n/a
Pin 28
ID_SC (I²C ID EEPROM)
ID Taktleitung
n/a
move the screw holes for the spacers so that they fit the raspberry pi 3 layout
Add inputs for buttons that detect wether a door is opened or closed.
add labels that mark + and - to X5
add LEDs that indicate if an output is on
change pads of L1 so it is easily possible to solder L1 by hand
With a real shortcut at the motor connector, the mosfet trips quicker (always on) than the polyfuse.
Die Breite der Pins der AKL-Buchsen sind Reckteckig und haben die Maße 0,8x0,8 mm.
Vias sind kreisförmig und haben einen Durchmesser von 0,9mm.
--> Größe der Vias müssen auf einen Mindestdurchmesser von 1,6mm vergrößert werden.
The shield shall signal if a fuse has tripped. This could be signaled e.g. by a red LED.
Die Anschlüsse MISO und MOSI für die SPI-Verbindung zwischen dem ADC (MCP3008) und dem Raspberry Pi sind vertauscht.
Der output Pin Din des ADC ist mit MISO verbunden.
Der input Pin Dout mit MOSI.
--> Din mit MOSI verbinden.
-->Dout mit MISO verbinden.
Change the power input to a barrel connector to which a power supply unit like MW 2108GS/F2USB can easily be connected. Consider that the barrel connector is suitable for the expected maximum current.
the AKL connectors are designed out of grid and can not be connected to a net. The connectors could be changed to use PxC MSTB connectors. These footprints are already contained in the eagle libraries.
Place big and visible labels for DCIN and GND at the power input connector.
The Wago 233-202 is not available at the distributor.
All WAGO clamps shall be exchanged from 233-20x to 233-50x since these are available and fit better to the pcbs grid.