OSH Park
Profile for dword1511
Shared projects
usbmicro-dual-supply
by
dword1511.
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.
L272-BTL-Drv
by
dword1511.
2
layer board of
2.15x0.88
inches
(54.64x22.23
mm).
Shared on
March 21st, 2017 17:27.
led-sampler-cc
by
dword1511.
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.
led-sampler
by
dword1511.
2
layer board of
2.40x0.65
inches
(60.99x16.54
mm).
Shared on
January 22nd, 2017 05:29.
0603 LED sampler
lpc810-capmeter
by
dword1511.
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
