ZOINKS

ZOINKS OPEN INTERFACE NETWORKED KONTROL SYSTEM

Ethernet Enabled Laboratory Control System

UT-Ethernut Interface | Thermocouple Monitor | RF Amp | RF Preamp | RF Function Generator | RF Switch

ZOINKS
UT-Ethernut Interface Analog Box Digital Box DDS Box

The UT-Ethernut Interface adds Ethernet connectivity to the parallel bus system designed for the Raizen lab at the University of Texas.

The system is comprised of an embedded Ethernut computer and an interface circuit with FIFOs and a clock input. Data is loaded into memory over TCP/IP and then clocked onto the parallel bus from the Ethernut's memory, through the FIFO buffers. We have some pictures of an assembled system.

Manual (in progress)

Design Works File of Rev. 4 interface circuit, from which the schematic was made (dsw)

Schematic of Rev. 4 interface circuit (pdf)

Osmond Quartz File of Rev. 4 interface circuit board layout (osm)

Gerber Files of Rev. 4 interface circuit board layout (zip)

PostScript Files of Rev. 4 interface circuit board layout, roughly equivalent to the above Gerber files (zip)

PDF Files generated from the above Gerber files (zip)

Source Code for Ethernuts running an interface circuit (zip). Needs Nut/OS to be compiled. This can be unzipped directly into the application tree once Nut/OS is installed. Includes working code for Digital Output boxes (with two Digital Output circuits) and Analog Output boxes (with two Analog Output circuits).

Library files for communicating with Ethernuts running interface circuits (zip). Includes a sample program and some utilities. The library and sample programs are all written in Perl.

These are interface circuits from the Raizen Lab:

Analog Output Circuit manual, including schematics (pdf). This file was originally here.

Digital Output Circuit manual, including schematics (pdf). This file was originally here.

DDS Circuit manual, including schematics (pdf). This file was originally here.

Web Thermocouple Monitor (WebTC) WEBTC Box

The WebTC is a 8 channel Ethernet-enabled thermocouple monitor.

Manual (pdf)

Schematic of Rev. D (pdf)

Osmond Quartz File of Rev. D circuit board layout (osm)

Gerber Files for Rev. D ciruit board layout (zip)

PDF Files generated from the above Gerber files (zip)

Machine Drawing for front and back panels of box (pdf)

Source Code for Ethernut running a WebTC (zip). Needs Nut/OS to be compiled. This can be unzipped directly into the application tree once Nut/OS is installed.

RF Amplifier RF Amplifier Box

The RF amplifier is a relatively cheap amplifier with >30dB of gain capable of up to 1.5W or 32dBm. They use Freescale's MHW1345 linear amp modules, a replacement Motorola's popular and discontinued CA2830. We put 6 in a box with some fans because they do get quite hot.

Manual, with some pictures (pdf)

Osmond Quartz File of circuit board layout (osm)

Gerber Files for circuit board layout (zip)

PDF Files generated from the above Gerber files (zip)

Machine Drawing for the front panel

Machine Drawing for the individual amplifier box

RF Preamplifier RF Preamplifier Box

The RF preamplifier was designed at UBC to give a little extra power after the DDS boxes and before the RF amplifier. It can be used with a number of Mini-Circuits monolithic amplifier ICs for gain from 8 to 16dB.

Schematic from UBC (pdf)

Bill of Materials from UBC (pdf)

Osmond Quartz File for circuit board layout (osm)

Gerber Files for circuit board layout (zip)

PostScript Files for circuit board layout, roughly equivalent to the above Gerber files (zip)

PDF Files generated from the above Gerber files (zip)

Machine Drawing for front panel of box (pdf)

RF Function Generator RF Function Generator Box

The RF Function generator is a relatively inexpensive RF source built before we built the DDS boxes. Based on Mini-Circuits Voltage Controlled Oscillators and Voltage Controlled Attenuators, these generators include external modulation inputs for frequency and amplitude and a dedicated RF switch (below) per channel. We have versions centered at 80MHz and 130MHz with output power of up to +5dBm.

Manual in progress

Schematic for the function generator circuit (pdf)

Osmond Quartz File for the function generator circuit board layout (osm)

Gerber Files for the function generator board (zip)

PostScript Files for the function generator board, roughly equivalent to the above Gerber files (zip)

PDF Files generated from the above Gerber files (zip)

Front Panel Drawing for a box with three function generators and three RF switches (pdf)

Osmond Quartz File for a power distribution circuit board layout (osm). This is useful for connecting the RF function generators and the RF switches to the same power supply in a box.

Gerber Files for the power distribution circuit board layout (zip)

PostScript Files for the power distribution circuit board layout, roughly equivalent to the above Gerber files (zip)

PDF Files generated from the above Gerber files for the power distribution board (zip)

RF Switch RFSwitch Box

The RF Switch has 10 channels with ~5ns switching driven by TTL. Isolation is better than 40dB and insertion loss is less than 1dB. Uses minicircuits MSWA-2-20 which works well from DC to 2GHz.

Manual In Progress

Schematic (pdf)

Gerber Files (zip)

Front Panel Drawing (pdf)

The ZOINKS project consists primarily of contributions from the Steck Lab at the University of Oregon and the Madison Lab at the University of British Columbia. Some of the electronics are based off of designs by Todd Meyrath and Florian Schreck. Information on these designs and the UTBus can be found here. Another document, written by Raymond Gao (formerly of the Madison lab), which describes some more information and goals of the ZOINKS project is available here.