Shared projects

usbmicro-dual-supply

by dword1511.
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2 layer board of 1.12x0.44 inches (28.47x11.20 mm).
Shared on March 26th, 2017 03:16.

200mA USB-Micro to +/- 2.5V converter, with LM2776, LP5907-2.5 and TPS72325.

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L272-BTL-Drv

by dword1511.
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2 layer board of 2.15x0.88 inches (54.64x22.23 mm).
Shared on March 21st, 2017 17:27.

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led-sampler-cc

by dword1511.
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2 layer board of 2.40x0.65 inches (60.99x16.54 mm).
Shared on March 21st, 2017 01:14.

LED sampler with constant-current drive. Current mirrors ensure each LED is driven by (roughly) the same current. Not for beginners (0603, SOT-363).

Uses Bel 0ZCJ0050AF2E PTC fuse, AP2112-3.3 LDO (for setting reference current precisely, but also supplies the LEDs), 330R resistor sets current to around 5mA per LED, Diodes DMN32D4SDW dual N-MOS (needs sorting) in SOT-363.

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led-sampler

by dword1511.
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2 layer board of 2.40x0.65 inches (60.99x16.54 mm).
Shared on January 22nd, 2017 05:29.

0603 LED sampler

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lpc810-capmeter

by dword1511.
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2 layer board of 1.80x0.70 inches (45.72x17.78 mm).
Shared on January 22nd, 2017 05:29.

LPC810-based capacitance meter, with MCP2221A USB-to-serial converter. See firmware on github photo

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