Re: [DIYbio] Amazon unintentionally solves "low cost lab automation device" challenges

How would you charge the device if the USB port being used for charging is also the port connected to something that needs to get its power from the tablet/phone through that same port?

I have some Windows 10 tablets that charge through the only USB port they have, and to connect an external keyboard/mouse I have to stop charging.

Or at least I thought I did, until I read your email.

I will have to try charging from a USB hub that has the keyboard/mouse attached to its other ports, and see if that works.

I may have some cheap Android tablets around with the same configuration, and I will try those as well.

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On Mon, Nov 13, 2017 at 2:28 AM, Marc Juul <juul@labitat.dk> wrote:

Beware that Amazon's cheapest tablets are not able to use USB OTG while charging. This seems to be due to lack of kernel support. Possibly putting CyanogenMod or similar on there might fix this but I haven't tried. If anyone knows anyone in the San Jose headquarters of Lab126 maybe you could let them know about the issue?

On Sat, Nov 11, 2017 at 4:24 PM, Simon Quellen Field <sfield@scitoys.com> wrote:

Android tablets can host OTG USB connections (including USB to serial converters and USB to parallel converters).

And they have a microphone and earphone jack, which you can send and receive data on, using a bit of software.

And at $37, you save two bucks.

WiFi, Bluetooth, 1024x600 touch screen, quad core 1.3 GHz processor, half a gig of RAM, 8 gigs of flash, TF card slot, and front (0.3 mp) and back (2 mp) cameras.

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On Sat, Nov 11, 2017 at 3:45 PM, Nathan McCorkle <nmz787@gmail.com> wrote:

On Thu, Dec 3, 2015 at 10:21 AM, Jonathan Cline <jcline@ieee.org> wrote:

 This past month with Amazon dropping the price of the lowest cost Fire tablet to $35 

It seems the cheapest I can find with Prime 2-day shipping is now $39.99, and this doesn't seem to be a recent generation

the only item missing from the low end Fire to truly seal the deal to make the product into "electronic paper" is a bidirectional general purpose input/output contact on the outside

I wonder if wires are needed these days with the ESP8266 or ESP32 (wifi microcontrollers). That Fire tablet has Wi-Fi... so things could be even more flexible.

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