OBJEX Link v1.5

Overview

OBJEX Link v1.5 is the default version of the series. This version of OBJEX Link is designed to provide high computing power. With the compromise of slightly increasing power consumption. The board is very compact and can be used for various IoT applications and more. It is possible to install two M0 modules or one M1 module.
IoT Applications: Smart Home & Cities, IIOT, Predictive Maintenance, Agriculture Automation.
It's also ideal for rapid prototyping, advanced research projects, and robotics projects.

Key features

  • Compact size 24x24mm, high component density
  • Modular design for a wide range of applications
  • Designed to ensure easy reuse
  • Based on ESP32-PICO-D4
  • WiFi & BLE 4.2 connectivity
  • Over 17 GPIOs
  • USB-C Type 2.0
  • Tiny battery connector
  • Compatible with Arduino IDE
  • Battery manager(fast-charge)
  • Support for external PSRAM
OBJEX Link v1.5 is not compatible with MicroPython.

Block diagram

Block diagram - OBJEX Link v1.5

Pinout

The picture below shows the OBJEX Link v1.6 pinout of its two M0 slots. As you can see some pins like SDA and SCL are present on both M0 slots in order to use at best all pins in the two slots.

Schematic

IO_SlimStack_rev1.5.pdf
63KB
PDF
OBJEX_LINK-Rev1.5.pdf
315KB
PDF

Technical specifications

Microcontroller
ESP32-PICO-D4 / 240MHz dual core
I/O
ADC, SPI, PWM, UART, I2C, I2S
Modules type
x2 M0 or x1 M1
USB
USB-C Type 2.0
WiFi
802.11 b/g/n (802.11n up to 150 Mbps)
Bluetooth
Bluetooth® 4.2 BR/EDR and Bluetooth LE
LDO
Vin = 5V / Vout = 3.3V
Battery manager
1A Maximum
Battery type
LiPo / Li-Ion
Operating temperature range
−40°C to 85°C
Dimensions
24mm x 24mm
PCB Thickness
1.6mm
Thickness(PCB with USB-C)
5mm
Weight
2.91g

Warranty & Certifications

OBJEX Link v1.5 is currently an experimental prototype, but all components used are RoHS compliant.
OBJEX Link v1.5 does not yet have all the certifications needed for mass sale. Currently, only a few prototypes are distributed for testing and research purposes, and not for real use on IoT devices.