EZ-B IoTiny

Link: https://youtu.be/oPMsaccwQWI

This Roll-out Video includes:

  1. Feature set
  2. Hook-up guide for Power, Servo, ADC, I2C, Camera, and Speaker
  3. Using related Synthiam ARC software skills
  4. Schematic overview
  5. Bill of Materials (BOM) overview
  6. Custom firmware location
  7. Assembly instructions
The EZ-B IoTiny reference design has the wireless video and audio streaming capabilities of an IoT device paired together with the sensor and servo features of a robot controller. It's 1/4 the size of the EZ-B v4 but it has 1/4 the amount of I/O pins as a result. It's barrel jack for power and upward facing GVS servo/sensor pins make the IoTiny instantly application ready. We want to share these reference design files with you so you can create your own!


  • 3.33MBaud UART data communication to EZ-B Camera
  • 1 x I2C port
  • 8 x Digital I/O ports with PWM
  • 2 x 12-bit Analog ports (Not 5V Tolerant)
  • 1 x 12-bit DAC for audio output
  • Audio Amplifier & Speaker breakouts
  • PIC programming header
  • Energy efficient 3.3V 3A Switching power supply
  • Reset button for WiFi module
  • Integrated Webserver (
  • AP mode (direct) and Client mode (router) available
  • Can connect to phones and tablets with EZ-Builder App
  • Over the air updating
  • 5V tolerant I/O pins
  • Reverse polarity protection
  • 10mA protection limit for I/O ports
  • RGB Status LED
  • Voltage requirement: 4.5-16VDC (7.4V Typical)
  • Current draw: 75mA (no audio, 7.4V)
  • Dimensions: 41(W) x 56.5(L) x 13(H) (mm)
  • Weight: 14g

  • Major Components

  • EMW3165-P MXChip WiFi Module (custom firmware provided)
  • PIC16F1704-I/ST PIC Microcontroller (custom firmware provided)
  • LM4902MM Audio amplifier
  • RT8299GSP Switching power supply

  • Manufacturing Notes

  • Supplier: programs custom firmware into the EMW3165-P at their facility before sending to manufacturer
  • Supplier: programs custom firmware into the PIC16F1704-I/ST at their facility before sending to manufacturer
  • Manufacturer: Single side placement and soldering of SMT components
  • Manufacturer: Single Side soldering of THT components

  • Certification: Recommended to compliance test in order to check for FCC Part 15 Class B interference with the FCC/CE Certified EMW3165 WiFi module.

    EZ-B IoTiny Information page: https://synthiam.com/GettingStarted/Build-Robots/EZ-Robot-EZ-B-IoTiny-7


    Documentation: Schematic PDF, Datasheet PDF, BOM, Vector model, Assembly Notes, Test Procedures

    Hardware: Altium PCB design File, Altium SCH Design File, Gerbers

    Firmware: Compiled Hex for WiFi Module, Compiled Hex for Secondary PIC

    Altium Libraries are also available here


    Where to buy

    EZ-Robot has their products on their website store for purchase, as well as many other online and offline retail stores. Here's a link to the EZ-Robot's store: EZ-B IoTiny