JuicyBoard: Modular Robotic Control System

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Apr 07, 2017

R1000AX Compute Module Modification

Hi Everybody, we’ve got a few exciting updates this week:

R1000AX Compute Module Modification

After last week’s update we launched a quick survey to get your feedback on R1000AX changes, we’ve received 12 responses unanimously supporting the proposed change. We’ve updated R1000AX design and it’s checked in dev_20170329 git branch. This block diagram shows how the compute module can be connected to the main controller

This is a 3D model after the changes

  1. Compute module interposer
  2. USB host connector
  3. Button for compute modules (function differs based on module)

The compute module can communicate with the main controller through UART0 (which is shared by socket #8), it can drive RESET and ISP pins. It can also access SWD port for low level programming and debug, this gives total control of the system even if the LPC1769 bootloader is corrupt and allows remote programming without the need to be physically preset next to the system.

We’ve also added a USB differential pair that can be connected through 0Ω jumpers in case the user wants to free slot #8 and use the LPC1769 device USB port for communication, that applies for compute modules that include a host usb interface (such as C.H.I.P. Pro).

We are going to ship a free interposer of choice for every backer, at the end of the campaign we will send out a survey for you to choose your interposer.

Current interposer designs are on github, R1100, R1101, R1102

3D Enclosure Design

We’ve launched a 3D design for an enclosure on thingiverse. As usual it’s open source and it’s designed with OpenSCAD, it’s parametrizable and can be easily modified. It’s still a work in progress.

Documentation Page Launched

We’ve just launched site that will include all documentation of the platform, we’re currently working on it.

Supporting Tarocco Closed Loop Brushed DC Motor Controller

We’ve talked to the designer of Tarocco, a closed loop controller for brushed DC motors and we found out that it can be used with JuicyBoard without changes in Juicyware. You will be able to use brushed DC motors as servos in your application. We’re planning to support Tarocco in our partner module list.

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Product Choices

$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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Sherif Eid

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