Old standard
For new developments please refer to the IoTaaP Wolffia and Q Link modules. Support for this standard will end on May 10, 2021.
IoTaaP Embedded standard
Compact standard for IoT add-on development modules
Pinout
IoTaaP has various I/O pins that can be configured for different features, such as PWM, DAC, SPI, ADC, etc. Some pins have some special behaviors, so be sure to check the table below.
| PIN | Input | Output | Notes |
|---|---|---|---|
| VSYS | N/A | N/A | External power supply (5V MAX) |
| 5VOUT | N/A | N/A | 5Vout (1A MAX) |
| GND | N/A | N/A | GND |
| 3.3V | N/A | N/A | 3.3Vout (300mA MAX) |
| RESET | N/A | N/A | LOW level will reset module |
| P2 | YES | YES | P2 or LED1 |
| P4 | YES | YES | P4 |
| P12 | YES* | YES | Boot will fail if HIGH |
| P13 | YES | YES | P13 |
| P14 | YES | YES | Outputs PWM at boot |
| P15 | YES | YES | Outputs PWM at boot. P15 or LED2 |
| P16 | YES | YES | P16 |
| P17 | YES | YES | P17 |
| SCL (I2C) | YES | YES | P22 (4k7 pull-up to 3.3V) |
| SDA (I2C) | YES | YES | P21 (4k7 pull-up to 3.3V) |
| MISO (SPI) | YES | YES | P19 with 100R resistor |
| MOSI (SPI) | YES | YES | P23 with 100R resistor |
| CLK (SPI) | YES | YES | P18 with 100R resistor |
| CS (SPI) | YES | YES | P5 with 100R resistor. Outputs PWM at boot |
| TX (Serial) | TX pin | YES* | Debug output at boot |
| RX (Serial) | YES* | RX pin | HIGH at boot |
| P26 | YES | YES | |
| P27 | YES | YES | |
| P32 | YES | YES | P32 or Buzzer |
| P33 | YES | YES | P33 |
| P34 | YES | NO | P34 |
| P35 | YES | NO | P35 |
| A3 | YES | NO | Analog input |
IoTaaP Embedded Modules
In order to match IoTaaP Embedded Standard, your modules should match the pinout and their dimensions must be 18.00mm x 46.00mm
Headers spacing
In order to match IoTaaP Embedded Standard, your modules should match the spacing between headers of 15.24mm and 5.08mm, as shown.
Documentation
More detailed documentation and examples are available at our docs pages.