The native shield is stacked on an arduino mega. Next to the mandatory functionalities related to the 0816 feeder, the board has some useful capabilities commonly used in the context of pick and place machines. So there are optionally two vacuum sensors, analog inputs breaked out and 4 power output switched by mosfets. You might want to consider using the cheap and widely available sensor shield mega. There is a comparison table at the controller-page to help you to make the right decision.

Order pcb directly from

• OSH park or
• aisler
• or load the source files (see below) to order pcb from somewhere else cheaper

To fully assemble the controller-pcb you need following parts. The BOM is grouped by functionalities independed of each other. So if only feeder functionality is desired, leave out everything from the other groups. You could even leave out the SMD parts in the feeder functionality group and solder a jumper wire to connect the feeder GND line to the PWR_FEEDER GND line which would have been done by mosfet Q5 normally. The pcb is then just a translation of the arduino mega pinout to the 4 pin feeder connectors.

placement of parts

solder bridge if Q5 is omited → no automatic switch of feeders' power supply then.

The pinout is to be found in boards.h in the firmware. Here is the table:

• source files in eagle: v2.2_0816-automatic-feeder-controller-pcb.zip.zip
• controller-pcb-schematic.pdf and board layout/placement.pdf
• order directly from OSH park (little expensive), aisler or load the source files to order pcb from somewhere else cheaper

I realized Method A for me, tested Method D and used Method B for prototyping. The other types to control the feeders are just ideas and need more effort to setup.

Setup	Description
A Arduino Shield for 24 feeder	→ native shield
B Temporary wiring on prototyping board	Just use some temporary or permanent breadboard-pcb with pinheads and connect to an arduino mega. For first test this would be the cheapest solution. Wire as shown in fritzing and upload the firmware for the 0816 controller without any modification on the mega. The suggested wiring map to feeder with the index N0.
C Dedicated Servo Driver	use PCA9685 16 Kanal 12 Bit PWM Servo Motor Treiber with feeder pcb. untested, but should work. would need you to adapt the firmware. Pins for the feedbackline (if desired to use) are still needed.
D Sensor-Shield-Arduino-Atmega	Another untested option: Sensor Shield. Pinout of Firmware has to be modified. Feedback-Line doesn't work with this board because the fourth line is missing.
X Own Build	Build your own controller. Just need 5V, GND and PWM for controlling the servo-motor. If desired there is a fourth line for rudimentary feedback about the feeders status.