https://github.com/rustbox/vgaterm-schematics

https://github.com/rustbox/vgaterm-schematics

OCXO Timebase for Philips PM6611, PM6612, PM6613, PM6614, PM6615 and PM6616 frequency counters, replaces PM9690

Project description: https://www.maltepoeggel.de/?site=ocxozeitbasis

Senior Design Project UT Mech. Eng

A project from DG1JAN, for a matching transformer board for antennas: https://github.com/DG1JAN/UniBalun A PCB for a lightweight qrp (maximum 10W SSB & CW or 5W on FT8) 1:49 UnUn (also 1:9,1:64,… possible) or Balun (1:1, 1:4)

PCB to mimic a Pratt-Read two buss keybed using reed relays. Needs the FATAR decoder PCB as well

A pcb for a 6hp passive eurorack attenuator in 1U (IJ format). The pcb is designed for a 9mm alpha pot (100kB) and two jacks (e.g. thonkiconn).

It is recommended to use pots with a knurled or round shaft. Note that the pot is oriented at a 90 degree angle, the marks on a D-style knob will be oriented incorrectly.

There are additional solder pads to connect to the normalization inputs of the jacks (input and output).

The pcb works with the shared project “Passive Attenuator for Eurorack (6hp, 1U, IJ format) - PANEL VERSION B”

A panel for a 6hp passive eurorack attenuator in 1U (IJ format).

The panel can be used without a component pcb (just add the pot and jacks and solder on the back using wires), but it works best with the corresponding component PCB: “passive Attenuator for Eurorack (6hp, 1U, IJ format) - PCB VERSION B”

Note that the markings are not 300 degrees. If your pot uses a 300 degree rotation, the markings are slightly off (some pots also use 270 degrees, it really depends on the pot).

A panel for a 6hp passive eurorack attenuator in 1U (IJ format).

The panel can be used without a component pcb (just add the pot and jacks and solder on the back using wires), but it works best with the corresponding component PCB: “Passive Attenuator for Eurorack (6hp, 1U, IJ format) - PCB VERSION A”

Note that the markings do not cover 300 degrees but slightly less. See an updated panel here: https://oshpark.com/shared_projects/p0Sa2p0l

A pcb for a 6hp passive eurorack attenuator in 1U (IJ format). The pcb is designed for a 9mm alpha pot (100kB) and two jacks (e.g. thonkiconn).

There are additional solder pads to connect to the normalization inputs of the jacks (input and output).

The pcb works with the shared project “Passive Attenuator for Eurorack (6hp, 1U, IJ format) - PANEL VERSION A”

A 4hp blank panel for Eurorack 1U rows (IJ format). In order to use the panel, you have to sand down the little nubs that OSHpark leaves after production.

The final revision of the WOLF 1.5.5

Change log: -Added 3 pin connector for the 5V LEDs -Changed the internal layers to be the unregulated 5V signal in order to satisfy power draw requirements for the 5V LED strings -Filleted corners of the board -Added on board comments for power supply requirements as well as rectenna voltage and temperature reading -SSPIDR logo is now exposed copper

Simple board for using Renesas RA2E1 48MHz ARM Cortex-M23 Ultra Low-Power Microcontroller on breadboard.

Features

• RA2E1 Ultra-Low Power Microcontroller in 32-pin HWQFN package
• Onboard labels optimized for R7FA2E1A72DNH part
• Pin compatible with any other 32-pin HWQFN part from RA2E1 family
• Powered using pin header by any voltage in range 1.6 - 5.5V
• 1×SPI, 1×I2C, 3×SCI (UART/SPI/I2C)
• 12-bit ADC
• Onboard SMT jumper for connecting external ADC VREF (jumper open) or connecting VCC to VREF (jumper closed)
• Onboard 32.768 kHz crystal oscilator
• Onboard standard 12-pin ARM Cortex debug connector

Schematics

BOM

Downloads

• Schematics (PDF)
• Gerbers (ZIP)
• Kicad project (ZIP)

Temperature Probe