Shared projects

FTDI-be-gone v0.4

2 layer board of 1.28 x 0.60 inches (32.4 x 15.3 mm).
Shared on February 27th, 2016 08:16

This board will take a Cypress Semi CY7C65213 USB UART and a MAX3243ECRHBR RS-232 level converter. The Cypress Semi part uses USB class drivers built-in to the OS, so there’s no opportunity for vendor driver shenanigans like “FTDI-gate.”


FTDI-be-gone v0.4

2 layer board of 1.28 x 0.60 inches (32.4 x 15.3 mm).
Shared on February 27th, 2016 08:16

This board will take a Cypress Semi CY7C65213 USB UART and a MAX3243ECRHBR RS-232 level converter. The Cypress Semi part uses USB class drivers built-in to the OS, so there’s no opportunity for vendor driver shenanigans like “FTDI-gate.”



POV Twirlie v0.2

2 layer board of 6.00 x 0.50 inches (152.4 x 12.7 mm).
Shared on December 30th, 2015 18:01

Uses the same firmware as the Tiny Blinky. Mount it on a dowel and twirl it between your hands and watch the lights trace out POV patterns.

This version moves the battery inwards slightly to try and improve the balance, and moves the LEDs closer together to make better patterns.


POV Twirlie v0.2

2 layer board of 6.00 x 0.50 inches (152.4 x 12.7 mm).
Shared on December 30th, 2015 18:01

Uses the same firmware as the Tiny Blinky. Mount it on a dowel and twirl it between your hands and watch the lights trace out POV patterns.

This version moves the battery inwards slightly to try and improve the balance, and moves the LEDs closer together to make better patterns.



FE-5680A power / interface board v1.1

2 layer board of 1.35 x 1.58 inches (34.3 x 40.0 mm).
Shared on October 25th, 2015 04:21

Rubidium standard breakout/adapter. Connect a surplus laptop 18V-24V DC power supply and it outputs +15V and +5V for the FE-5680 (the +5 can be disabled by breaking a jumper if your unit doesn’t require +5). The PPS and serial I/O are presented on a SIP-4 and the RF output is on a separate 2 pin header.

This is a modification of the Pi Power circuit.


FE-5680A power / interface board v1.1

2 layer board of 1.35 x 1.58 inches (34.3 x 40.0 mm).
Shared on October 25th, 2015 04:21

Rubidium standard breakout/adapter. Connect a surplus laptop 18V-24V DC power supply and it outputs +15V and +5V for the FE-5680 (the +5 can be disabled by breaking a jumper if your unit doesn’t require +5). The PPS and serial I/O are presented on a SIP-4 and the RF output is on a separate 2 pin header.

This is a modification of the Pi Power circuit.



AVR ISP Pogo Adapter v0.5

2 layer board of 0.70 x 0.90 inches (17.8 x 22.9 mm).
Shared on June 28th, 2015 02:05


AVR ISP Pogo Adapter v0.5

2 layer board of 0.70 x 0.90 inches (17.8 x 22.9 mm).
Shared on June 28th, 2015 02:05



Raspberry Pi AVR ISP Cap v0.2.1

2 layer board of 1.35 x 0.83 inches (34.3 x 21.0 mm).
Shared on June 11th, 2015 03:00

AVR programming adapter for Raspberry Pi. Use “linuxgpio” driver in avrdude v6.1 or newer. Pin assignments:

  • RESET - GPIO 25
  • MISO - GPIO 9
  • MOSI - GPIO 10
  • SCK - GPIO 11

This includes switchable target power (3.3v/5v/off) protected by an AP2331 current limiter as well as a bus buffer / level shifter IC. There’s also an LED to indicate when programming is in progress.


Raspberry Pi AVR ISP Cap v0.2.1

2 layer board of 1.35 x 0.83 inches (34.3 x 21.0 mm).
Shared on June 11th, 2015 03:00

AVR programming adapter for Raspberry Pi. Use “linuxgpio” driver in avrdude v6.1 or newer. Pin assignments:

  • RESET - GPIO 25
  • MISO - GPIO 9
  • MOSI - GPIO 10
  • SCK - GPIO 11

This includes switchable target power (3.3v/5v/off) protected by an AP2331 current limiter as well as a bus buffer / level shifter IC. There’s also an LED to indicate when programming is in progress.