OSH Park
Shared projects
Mini Volt Trigger
by
GoforthTech.
2
layer board of
2.56x0.81
inches
(64.97x20.68
mm).
Shared on
December 15th, 2015 22:53.
Use to monitor voltage range and enable external controller (Arduino; Rpi; Stamp; etc). Triggers 5v / 1amp at Upper Limit; turns off at Lower Limit. Trigger will only fire upon reaching upper limit; and only release upon reaching lower limit.
Limits are set using resistors / Voltage Dividers.
Vin (Battery) can be 10 - 30 volt.
*Sample points / Voltage Dividers need to be 2v - 7v. Do not exceed 7v.
Examples which set sample points to 2.5volts: Upper Limit of 14.1 Volts: R4 = 4.4k , R5 = 1k Lower Limit of 12.7 Volts: R2 = 3.2k, R3 = 1k
Parts List: Shopping List
2 Screw terminal - 2 pins pins 2; package THT; hole size 1.0mm,0.508mm; pin spacing 0.1in (2.54mm)
3 Rectifier Diode type Rectifier; package 300 mil [THT]; part # COM-08589
1 Voltage Regulator chip 78005; package to220-igo; variant sink; voltage 5V; part # COM-00107
1 4.4kΩ Resistor bands 4; package THT; resistance 3.3kΩ; pin spacing 400 mil; tolerance ±5%
1 3.2kΩ Resistor bands 4; package THT; resistance 3.2kΩ; pin spacing 400 mil; tolerance ±5%
2 1kΩ Resistor bands 4; package THT; resistance 1kΩ; pin spacing 400 mil; tolerance ±5%
1 4.4kΩ Resistor bands 4; package THT; resistance 4.4kΩ; pin spacing 400 mil; tolerance ±5%
1 SN74LS21N type SN74LS21N; package DIP14 [THT]
Breadboard & Simulation Tested. Awaiting PCB
BlueSaab RN52 v3.1
by
Edison517.
2
layer board of
2.36x2.44
inches
(59.97x61.95
mm).
Shared on
December 15th, 2015 22:16.
raspibo gadget 3
by
dancast78.
2
layer board of
1.00x1.00
inches
(25.50x25.50
mm).
Shared on
December 15th, 2015 22:00.
keyring POV with Raspibo logo
ESP8266 2 Port Relay Control
by
sdempsay.
2
layer board of
1.19x1.50
inches
(30.15x38.10
mm).
Shared on
December 15th, 2015 15:27.
Control a 2 port relay with an ESP-01
DGCRHM02
by
TEMdude.
2
layer board of
0.56x0.96
inches
(14.33x24.43
mm).
Shared on
December 15th, 2015 11:42.
Respiratory Health Monitor prototype