Am 09.04.2013 12:14, schrieb Nikki
Gordon-Bloomfield:
Using the Bluetooth serial connection, it should be possible
for users to implement a GUI with existing smart phone
technology.
Oh I forgot: yes! That's the idea behind adding Bluetooth to the
Twizplay, they could omit the LCD and use an App as the display
device.
That's really a good option I think! Would also keep cost down.
For Twizy owners that's an added bonus. There are no
door locks, and getting in is as simple as reaching inside and
pulling the door handle.
...that's why most Twizplay owners currently use a special quick
lock mount just for the Twizplay -- so you need both a mount for the
display and one for your mobile phone... bad.
Moving forward, I think it'd be great if someone in the
self-build community (You may have to work with someone else)
could produce a raw "battery pack to OVMS" module, which enables
those with converted or custom EVs to use the OVMS system using
a standard set of protocols and Can messaging -- or perhaps
direct using an add-on IO device?
That would make the OVMS an option for Ebike and Escooter drivers as
well. I've got one of these:
http://www.emco-elektroroller.de/elektroroller/novum.html
...just a simple chinese scooter, it doesn't have any data port, and
it's only display is an analog voltage meter for the overall battery
voltage -- you have to guess the SOC based on how deep the voltage
drops under load.
The most simple solution would be to provide two analog I/O ports to
feed pack voltage and current (measured as voltage difference on a
shunt) into the OVMS. The A/D conversion should be fast enough to
provide at least 10 ms resolution, so we can implement an Ah counter
in software. Also some digital I/O ports should be available to
measure the distance driven (by a reed sensor mounted to a tyre) and
maybe record some other system status.
So, basically the same as available solutions like the "Cycle
Analyst" or the "WattsUp" do, but with the added OVMS coolness.
Regards,
Michael
--
Michael Balzer * Paradestr. 8 * D-42107 Wuppertal
Fon 0202 / 272 2201 * Handy 0176 / 206 989 26