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ST7920 driver for PIC32MZ projects
The revised firmware to use ST7920-based graphical LCDs with the Low-Distortion Stereo DDS and DIY Reflow Oven projects, as described in Circuit Notebook, October 2022.
The package includes both new HEX files plus the revised source code for both projects.
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Firmware and source code for the Low-distortion DDS Signal Generator
The PIC32MZ2048EFH064-250I/PT microcontroller firmware (HEX file) plus C source code for the Low-distortion DDS Signal Generator.
Note: the source code was initially incomplete. That has been fixed now, and we've checked that it builds OK (see readme.txt file in ZIP).
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Pulse-type rotary encoder with pushbutton and 18t spline shaft
A five-pin rotary encoder with two mounting tabs that has been confirmed as the pulse type. Suitable for use in several projects published in the magazine (see below).
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128x64 Blue LCD screen with KS0108-compatible controller
A blue backlit LCD screen suitable for use with several of Phil Prosser's projects like the DSP Active Crossover, DDS, DIY Solder Reflow Oven and Intelligent Dual Hybrid Power Supply.
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Low-distortion DDS complete PCB set (5 boards) [01106192-6]
A complete set of PCBs for the Low-distortion DDS.
Includes one each of the DAC (01106192), PSU (01106193), CPU (01106194), Control (01106195) & LCD Adaptor (01106196) PCBs.
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DSP Crossover DAC PCB [01106192]
The digital-to-analog converter PCB for the DSP Active Crossover. Also used for the Low-distortion DDS Signal Generator.
Double-sided PCB with plated through holes, solder mask and silkscreen overlay.
55 x 101mm
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DSP Crossover CPU PCB [01106193]
The central processor PCB for the DSP Active Crossover. Also used for the Low-distortion DDS Signal Generator.
Double-sided PCB with plated through holes, solder mask and silkscreen overlay.
60 x 62mm
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DSP Crossover power supply PCB [01106194]
The power supply/signal routing PCB for the DSP Active Crossover. Also used for the Low-distortion DDS Signal Generator.
Double-sided PCB with plated through holes, solder mask and silkscreen overlay.
104 x 84mm
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DSP Crossover front panel control PCB [01106195]
The front panel control PCB for the DSP Active Crossover. Also used for the Low-distortion DDS Signal Generator.
Double-sided PCB with plated through holes, solder mask and silkscreen overlay.
107 x 32mm
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DSP Crossover LCD Adaptor PCB [01106196]
The LCD Adaptor PCB for the DSP Active Crossover. Also used for the Low-distortion DDS Signal Generator.
Double-sided PCB with plated through holes, solder mask and silkscreen overlay.
51 x 13mm.
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PIC32MZ2048EFH064-250I/PT programmed for the Low-distortion DDS Signal Generator
A PIC32MZ2048EFH064-250I/PT 32-bit, 250MHz processor in a 64-pin TQFP package, programmed with the software for the Low-distortion DDS Signal Generator.
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DSP Active Crossover/DDS/Reflow Oven PCB patterns (PDF download) [01106191-6]
PDF with the PCB designs for the six boards used in the DSP Active Crossover project (all double-sided).
These same boards (except for the one coded 01106191) were also used in the February 2020 Low-distortion DDS Signal Generator project.
Similarly, the subset of boards coded 01106193, 01106195 and 01106196 were used in the DIY Reflow Oven Controller project from the April 2020 issue.
The boards coded 01106193 & 01106196 were used again in the Intelligent Hybrid Power Supply (February & March 2022).
Both layers of all boards are in a single PDF, one PCB per page.
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