Shared projects

Raspberry Pi AVR ISP Cap v0.2.1

by nsayer.

2 layer board of 1.35x0.83 inches (34.29x20.96 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.

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OpenEVSE II logic/display v1.3

by nsayer.

2 layer board of 3.85x1.45 inches (97.82x36.83 mm).
Shared on May 18th, 2015 23:46.

A new design for OpenEVSE. This is the logic/display board.

This version swaps out the previous power supply caps with new parts, since the old ones were marked as obsolete on DigiKey.

Also, MOSFET gate biasing has been added to the pilot generator secondary side. This allows us to use the same BOM part for both primary and secondary in the pilot generator, at the cost of adding two resistors back to the design. Alternatively, you can use pre-biased BJT arrays for the secondary pair and leave the extra resistors out. Both options are known to work properly, with slew rates of 1 ┬Ás or less.

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OpenEVSE II HV + External Relay v1.0.1

by nsayer.

2 layer board of 3.00x2.00 inches (76.20x50.80 mm).
Shared on April 10th, 2015 05:02.

A new design for OpenEVSE. This is the external relay board.

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OpenEVSE II HV + Contactor v1.0

by nsayer.

2 layer board of 2.75x2.50 inches (69.85x63.50 mm).
Shared on April 10th, 2015 05:02.

A new design for OpenEVSE. This is the contactor board.

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OpenEVSE II HV + Relay v1.0

by nsayer.

2 layer board of 3.50x3.00 inches (88.90x76.20 mm).
Shared on April 10th, 2015 05:01.

A new design for OpenEVSE. This is the 30A relay board.

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