OSH Park
Profile for GijsvanBerne
Shared projects
BQ25895 powerbank breakout V2
by
GijsvanBerne.
2
layer board of
1.64x1.27
inches
(41.76x32.39
mm).
Shared on
February 4th, 2017 13:35.
Version 2 of BQ25895 breakout board. Swapped tantalum for all ceramic capacitors; Better inductor; Added screw terminal for SYS pins; Added input pins in parallel with USBin; Added footprint for optional diode (increase current); Swapped mini USB for micro; Exposed some copper for better thermal performance.
All 0805 ceramic caps; XAL50 2.2uH inductor;
Powerbank
by
GijsvanBerne.
2
layer board of
1.65x1.69
inches
(42.01x43.03
mm).
Shared on
January 11th, 2017 15:05.
Dual USB 2.0, combined 3.1A output, 1 x 10W, 1 x 5W, BC1.2 Specification. Quickcharge 3.25A micro USB input. Atmega328P MU micro. 4 x WS2812B RGB flashlight / fuel indicator / input current indicator. MAX17043 Fuel gauge. BQ25895 charger booster. ESD / polyfuse protection. BATFET disconnect when stored. Width pcb sized to multiples of 2 x 18650 dimensions.
1-Cell Lithium 3V3 Buck Boost Regulator
by
GijsvanBerne.
2
layer board of
0.50x0.56
inches
(12.62x14.33
mm).
Shared on
July 19th, 2016 19:41.
TPS63031 buck boost fixed 3v3 regulator module. In: 1.8-5.5v, out: 500 / 800mA. 1 x 0603 0.1uF cap, 3 x 0805 10uF cap, 4 x 2.54mm Pinheaders, 1 x LPS3015 1.5uH inductor. Good for 3v3 from single lithium cell, roughly the same size as a TO-220, caps included…
Snowboard/ski mounted GPS/G-force logger
by
GijsvanBerne.
2
layer board of
1.97x1.97
inches
(50.01x50.01
mm).
Shared on
January 23rd, 2016 23:26.
Dedicated ski or snowboard mounted journey logger with g-force/orientation data + display (speed, max-speed, min-max altitude, g-force acceleration etc).
GPS MTK3339; 3-Axis Accelerometer MMA8452Q; Micro SD-card logger; OLED 0.96 display module; Efficient TPS63031 3V3 Buck Boost converter; MCP73831 1-cell lithium Charger on Micro USB; Atmega644PA uController; Tactile on/off;
USB3.0 TPS2514 Breakout
by
GijsvanBerne.
2
layer board of
1.12x0.53
inches
(28.52x13.51
mm).
Shared on
September 10th, 2015 20:12.
USB 3.0 pins broken out to pinheaders. USB power and ground pins broken out to KF301-5.0 terminal block. TPS2514 USB charging port controller added to D+ and D- lines (10W config). Working.