User Manual

500mA current limit per output, you can double/triple/quadruple pins up to get more current, if you like. Just

make sure to tell the Crickit to turn on/off all four pins in a row.

Kick-back protection diodes for each output to 5V power.

Uses a ULN2003 Darlington driver (https://adafru.it/Bfl)

Instead of 4 solenoids/relays you can connect & control a single uni-polar stepper motor, connect the 5th (and

6th if it exists) wire to 5V. Won't work with bi-polar steppers, use the DC motor ports for that.

The drive outputs are also PWM-able, so you can control LED brightness or motor power. If using with solenoids

or relays, set the duty cycle to 0% or 100% only.

Advanced usage: If you want to drive higher-voltage

non-inductive/motor

devices, like 12V LEDs, you can power

the positive line of the LEDs from 12V, then connect the negative line of the LEDs to drive pins. Make sure your

12V power supply ground is connected to the Crickit ground. Not recommended unless you feel confident you

won't accidentally put 12VDC into the Crickit! Kick-back diode wont work in this case so not for use with

motors/coils/solenoids...

The seesaw chip on the Crickit does all the management of these pins so your Feather or CPX does not directly

control them, it must send a message to Crickit. They are on seesaw pins 13, 12, 43, 42 in that order.

8 x Signal I/O

Sure you can drive servos and motors but sometimes

you just want to blink an LED or read a button. The

Crickit has an eight-signal port. You can use these as

"general purpose" input/output pins. We solder a 3x8

female socket header in so you can plug wires in very

easily. Each signal has matching 3V and Ground power

pins.

All pins are 3.3V logic level

All pins can read analog inputs (potentiometers, bend sensors, etc) at 12-bit resolution

All pins can be set to outputs with high (3.3V) or low (0V) voltage

All pins can drive about 7mA when set to outputs

All pins can have an internal ~50Kohm pull-up resistor set when used as an input

Bonus: If you absolutely need more

capacitive touch

pins, Signal #1, #2, #3, #4 are four more capacitive touch

inputs.

Signal pin #1 is special and can be set to be a true analog 'output' with 10-bit precision.

The seesaw chip on the Crickit does all the management of these pins so your Feather or CPX does not directly

control them, it must send a message to Crickit. They are on seesaw pins 2, 3, 40, 41, 11, 10, 9, 8 in that order

The Signal pins do not have configurable pull up or pull down resistors like on many microcontrollers. Please

https://learn.adafruit.com/adafruit-crickit-creative-robotic-interactive-

construction-kit

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