Surge Suppressor board using thru hole components for RGBW LED strips. For details, see http://www.rv-project.com/projects/spark1b.php

7 Channel relay board for ESP8266 (Wemos D1 mini)

The Open Panzer Sound Card is a work in progress with the goal of bringing inexpensive, high quality, and open source sound functionality to RC models but especially to tanks using the Tank Control Board (TCB). The board is actually made up of two components. First, an off-the-shelf PJRC Teensy 3.2 is used as the onboard processor. The Teensy is then plugged into a socket on our custom carrier board that adds a Micro SD card slot (max 32 GB), a Maxim 9768 10 watt mono amplifier, and headers for external connections.

Changes in Version 2 include a 10 watt amp (up from 2.6 watt in V1) and a reverse polarity diode on the voltage input.

Resources

• GitHub Page
• A discussion thread on the development of this card can be found on the Open Panzer Forum.
• Eagle Board and Schematic (zip)
• Printable Schematic (pdf)
• Bill of Materials - PDF - Excel

Version 2, updated 2/3/2018

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EMF Detector http://www.instructables.com/id/Electromagnetic-Field-EMF-Detector-With-LM358/

BOM: https://www.mouser.com/ProjectManager/ProjectDetail.aspx?AccessID=5a3e4ae018

An Adafruit Featherwing expansion protoboard with Sparkfun Qwiic connectors

https://github.com/hongselectronics/Qwiic_Featherwing

Dual surge suppressor board using TVS diodes. For more information, see http://www.rv-project.com/projects/surge1b.php

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Commodore 64 Final Cartridge III + from https://s-o.webnode.cz/vykopavky/c64/

p9813 LED power distribution board

10 mm to 1-3/8" Mallory Cap Adapter

This is used to allow Nichicon LGX and LGY series capacitors to be mounted on a board which was originally for Mallory 1" diameter electrolytic caps. In my case this was to repair a Tektronix 7613 oscilloscope mainframe which had bad capacitors on the rectifier board. Note that this particular scope has two physical sizes of capacitors. This is the larger one. The 5 pins which replace the pins from the original capacitor are Harwin, Inc. H2101-01 pins which are digikey 952-1433-ND. Note that this pin is pretty skinny compared to the original Mallory capacitor pin so it will take a little soldering effort on the Tektronix board side.

10 mm to 1" Mallory Cap Adapter.

This is used to allow Nichicon LGX and LGY series capacitors to be mounted on a board which was originally for Mallory 1" diameter electrolytic caps. In my case this was to repair a Tektronix 7613 oscilloscope mainframe which had bad capacitors on the rectifier board. Note that this particular scope has two physical sizes of capacitors. This is the smaller one.

The 5 pins which replace the pins from the original capacitor are Harwin, Inc. H2101-01 pins which are digikey 952-1433-ND. Note that this pin is pretty skinny compared to the original Mallory capacitor pin so it will take a little soldering effort on the Tektronix board side.

PDM Generator

40pin socket used with a SOJ-36 pin SRAM IC to 32 wirewrap pins.

Multi-year LED glow marker

Multi-year LED glow marker