Find Jobs
Hire Freelancers

Android Tablet Google Nexus 7 by ASUS to reboot solely from USB power cycle - repost

$30-250 USD

Terminado
Publicado hace alrededor de 11 años

$30-250 USD

Pagado a la entrega
I am looking for solution to reboot ASUS Nexus 7 tablet solely from USB power. If USB power is turned off tablet to shutdown, and boot up again only when USB power is on. Prefer the battery to be still connected, but don't mind disconnecting it if you have a solution that works well. Looking for an experienced embedded software. Any solution that can be used to unfreeze a hard locked Android device via USB is welcome. If you can get the connectors, this is a fairly simple engineering problem that I was able to get down to two n channel mosfets and some resistors, running the USB power as an inverse power switch. A single MOSFET across the power switch works fine for activating the switch when given 5V to the Gate. The other MOSFET inverts the USB power to only go to 5V when missing. This just needs to be hooked to the battery for reliable power. When I try to use switch Positive, it doesn't have enough to turn on. With the above setup, you would hold USB power down for as long as needed to reboot (10+ sec), then bring back up. Eliminates the micro that I was going to use inside. You can also use usb power to wake if needed by short power cycle. It all comes down to finding the power connectors. Solution needs to be plug & plug, no soldering. Must have low profile, 60mmx13mmx3.5mm area where battery control electronics are located. Must provide working prototype and shipped. Must has use common easy to find component for later mass production. Upon confirmation of prototype, your solution must be prepared for mass reproduction. View attached schematic and photos form previous engineer, who is currently unable to continue this project.
ID del proyecto: 4301010

Información sobre el proyecto

2 propuestas
Proyecto remoto
Activo hace 11 años

¿Buscas ganar dinero?

Beneficios de presentar ofertas en Freelancer

Fija tu plazo y presupuesto
Cobra por tu trabajo
Describe tu propuesta
Es gratis registrarse y presentar ofertas en los trabajos
Adjudicado a:
Avatar del usuario
hi, i am an electrical engineer and an embedded system developer. i can help you with this project. i will provide one working prototype.
$347,50 USD en 30 días
4,9 (32 comentarios)
6,3
6,3
2 freelancers están ofertando un promedio de $299 USD por este trabajo
Avatar del usuario
I can do it . check pm
$250 USD en 10 días
5,0 (8 comentarios)
2,9
2,9

Sobre este cliente

Bandera de UNITED STATES
Boise, United States
4,9
4
Forma de pago verificada
Miembro desde feb 4, 2013

Verificación del cliente

¡Gracias! Te hemos enviado un enlace para reclamar tu crédito gratuito.
Algo salió mal al enviar tu correo electrónico. Por favor, intenta de nuevo.
Usuarios registrados Total de empleos publicados
Freelancer ® is a registered Trademark of Freelancer Technology Pty Limited (ACN 142 189 759)
Copyright © 2024 Freelancer Technology Pty Limited (ACN 142 189 759)
Cargando visualización previa
Permiso concedido para Geolocalización.
Tu sesión de acceso ha expirado y has sido desconectado. Por favor, inica sesión nuevamente.