Shared projects

Toast-R-Reflow, Controller & LCD backpack II

2 layer board of 3.15 x 1.40 inches (80.0 x 35.6 mm).
Shared on January 22nd, 2015 23:05

This is the Toast-R-Reflow controller “backpack.” It mounts on the back of a 80x36mm 2x16 LCD display.

This variant uses an ATMega328P controller and a MAX31855 thermocouple amplifier. It’s more expensive than the model I controller, but there’s lots of room for more features in the flash, it has connections for 3 buttons instead of just 1 and an FTDI serial port. Also, the MAX31855 has a much wider temperature range while having higher resolution.


Toast-R-Reflow, Controller & LCD backpack II

2 layer board of 3.15 x 1.40 inches (80.0 x 35.6 mm).
Shared on January 22nd, 2015 23:05

This is the Toast-R-Reflow controller “backpack.” It mounts on the back of a 80x36mm 2x16 LCD display.

This variant uses an ATMega328P controller and a MAX31855 thermocouple amplifier. It’s more expensive than the model I controller, but there’s lots of room for more features in the flash, it has connections for 3 buttons instead of just 1 and an FTDI serial port. Also, the MAX31855 has a much wider temperature range while having higher resolution.



Round holiday ornament

2 layer board of 2.02 x 2.12 inches (51.3 x 53.7 mm).
Shared on December 10th, 2014 18:26


Round holiday ornament

2 layer board of 2.02 x 2.12 inches (51.3 x 53.7 mm).
Shared on December 10th, 2014 18:26



Crazy Clock v0.8.1

2 layer board of 0.85 x 0.48 inches (21.6 x 12.1 mm).
Shared on November 23rd, 2014 02:48

Ticks randomly, but keeps “perfect” time.

A single AA battery will run it for 18 months-ish. Connect ‘clock’ terminals to a lavet stepper motor style clock movement.

NOTE: This version has incorrect crystal loading capacitance. It runs ~120 ppm fast. There is a more recent design that fixes this.

Firmware.

BOM:

  • R1 - 10k
  • R2 & R3 - 100R
  • C1 - 10 µF
  • C2 & C3 - 22 µF
  • C4 - 0.1 µF
  • D1 & D2 - BAT54A
  • L1 - 47 µH
  • IC1 - ATTiny45
  • IC2 - NCP1402 3.3V
  • Y1 - 32.768 kHz, 10 ppm


Crazy Clock v0.8.1

2 layer board of 0.85 x 0.48 inches (21.6 x 12.1 mm).
Shared on November 23rd, 2014 02:48

Ticks randomly, but keeps “perfect” time.

A single AA battery will run it for 18 months-ish. Connect ‘clock’ terminals to a lavet stepper motor style clock movement.

NOTE: This version has incorrect crystal loading capacitance. It runs ~120 ppm fast. There is a more recent design that fixes this.

Firmware.

BOM:

  • R1 - 10k
  • R2 & R3 - 100R
  • C1 - 10 µF
  • C2 & C3 - 22 µF
  • C4 - 0.1 µF
  • D1 & D2 - BAT54A
  • L1 - 47 µH
  • IC1 - ATTiny45
  • IC2 - NCP1402 3.3V
  • Y1 - 32.768 kHz, 10 ppm



AVR ISP Pogo Adapter v0.1

2 layer board of 0.70 x 0.90 inches (17.8 x 22.9 mm).
Shared on October 7th, 2014 01:43

Same as Sparkfun’s, but without the extra junk.


AVR ISP Pogo Adapter v0.1

2 layer board of 0.70 x 0.90 inches (17.8 x 22.9 mm).
Shared on October 7th, 2014 01:43

Same as Sparkfun’s, but without the extra junk.



EVSE Tester v3.3

2 layer board of 3.15 x 1.40 inches (80.0 x 35.6 mm).
Shared on July 28th, 2014 20:45

An EV Simulator, with a controller to analyze the incoming pilot


EVSE Tester v3.3

2 layer board of 3.15 x 1.40 inches (80.0 x 35.6 mm).
Shared on July 28th, 2014 20:45

An EV Simulator, with a controller to analyze the incoming pilot