Shared projects

Crazy Clock v0.8.1

by nsayer.

2 layer board of 0.85x0.48 inches (21.62x12.09 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

Order board. Download. Permalink. Embed order link.

Copy this HTML into your page to embed a link to order this shared project

AVR ISP Pogo Adapter v0.1

by nsayer.

2 layer board of 0.70x0.90 inches (17.78x22.89 mm).
Shared on October 7th, 2014 01:43.

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

Order board. Download. Permalink. Embed order link.

Copy this HTML into your page to embed a link to order this shared project

EVSE Tester v3.3

by nsayer.

2 layer board of 3.15x1.40 inches (80.04x35.59 mm).
Shared on July 28th, 2014 20:45.

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

Order board. Download. Permalink. Embed order link.

Copy this HTML into your page to embed a link to order this shared project

Pi Power v0.3

by nsayer.

2 layer board of 1.35x1.18 inches (34.29x29.85 mm).
Shared on July 24th, 2014 21:38.

A 6-12 VDC in, 5V @ 2A out power supply for R-Pi.

Order board. Download. Permalink. Embed order link.

Copy this HTML into your page to embed a link to order this shared project

GPS Pi Plate v0.1

by nsayer.

2 layer board of 1.05x1.35 inches (26.67x34.29 mm).
Shared on July 19th, 2014 19:40.

GPS serial and PPS for Raspberry Pi.

Takes an AdaFruit Ultimate GPS module and connects RX and TX to the GPIO serial pins (optionally - solder jumpers to disconnect them are on the board), the PPS output to GPIO 18, adds a CR1220 battery clip on the bottom for warm-start, a U.FL connector for an external GPS antenna and a FIX LED.

Order board. Download. Permalink. Embed order link.

Copy this HTML into your page to embed a link to order this shared project