JuicyBoard: Modular Robotic Control System

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Mar 31, 2017

Short Survey

Hello Everyone!

After completing the last R1000AX JuicyBoard PCB design last weekend we got some interesting feedback. At the moment the R1000AX board includes a micro-SD and a full SD card receptacle, both are using the same SPI port (so they can’t be used simultaneously). The full size SD is there as a convenience for some who prefer to use it. The current proposal is to eliminate the full SD receptacle and add a footprint for mounting an internet connected compute module instead, such as a C.H.I.P. Pro, Particle (photon/electron) or Rapsberry Pi Zero (+ possible other modules by creating a suitable 2 layer interposer board in the future), it will be powered directly from the JuicyBoard 5V supply, here’s how it looks

  1. Full sized SD card for convenience
  1. Internet compute module goes here, options:
  2. C.H.I.P. Pro
  3. Particle.io photon/electron
  4. Raspberry Pi Zero

  5. Host USB connector for compute module, can be used for external accessories or controlling LPC1769 through USB

This will have a couple of important advantages:

  • The whole system including the internet compute module will be compact and enclosed in the same case (currently being designed) without making it bigger.

  • The compute module will have direct access to the microcontroller RESET and ISP buttons, that means it can perform a Hard RESET or get the microcontroller into ISP mode without the need to physically push buttons, this is not possible through USB data port. You can also remotely debug your firmware through UART0 (using MRI mode). The compute module will also have direct access to the I2C bus and can act as a second master and read diagnostic data directly.

The new schematics and layout are available github. We’ve setup a survey form, please tell us what you think. If there’s positive feedback we will gerber out the new design next week.

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$5

Support Us!

Thanks for helping make JuicyBoard a reality! You will be rewarded with good karma, regular backer updates.


$339

Builder Kit

A complete kit that can build almost any complex 3D printer, CNC or router. Includes: R1000AX board (1); R1001 Stepper Motor Drivers (8); R1002 Quad 1A DC Low Side NFETs module (1); R1003 Analog/Digital I/O modules (2); R1007 Quad 20A DC Low Side NFETs modules (2); R1008 Dual Channel Platinum RTD PT100 Temperature Sensor modules (2).


$94

JuicyBoard R1000AX

This is the JuicyBoard with all bells and whistles! 15 feature slots + SD card slots + all the reliability and safety features.


$19

R1001 Smart Stepper Motor Driver

Smart stepper motor driver module with independent current control, stepping resolution, and telemetry functions.


$9

R1002 Quad 1A DC Low Side NFETs

Quad switches for controlling low-power peripherals, such as large LED status displays and fans. Maximum current limit of 1 A per channel.


$5

R1003 Analog/Digital I/Os

This module provides a quad channel analog or digital interface to the main CPU. It includes a 1% 4.7 kΩ resistor as required in most thermistor setups. Can be used for analog inputs, digital inputs, or outputs.


$29

R1007 Quad 20A DC Low Side NFETs

Four super-low resistance NFETs that can be used to drive very large peripherals (like a large heater or DC spindle). The transistors are rated 100 A (with less than 2 mΩ series resistance). Includes the necessary R1005 extender module.


$39

R1008 Dual-Channel Platinum RTD PT100 Temperature Sensors

This module uses two Maxim MAX31865 RTD-to-digital converters for precision temperature measurement. Hook up two PT100 resistors appropriate for your application (not included) for temperature readings accurate below +/- 0.3 C. Can be configured to sense 2-wire, 3-wire, and 4-wire PT100 configurations.

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plugg.ee Labs


Sherif Eid

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