This is a very simple tool to limit the Twizy charge current if you don't have an OVMS.
It can limit the charge current to a fixed level (defined in the config file) or use a coded rotary switch or simple DIP switch for dynamic level adjustment. It can signal the charging state and active throttling by LEDs.
See wiring scheme for an example using a coded rotary switch.
The Arduino needs to be connected to the Twizy CAN bus during the charge process to be able to actively overwrite the charge current control frames.
Note: using an interrupt capable CAN shield is highly recommended. No attempt at reducing the Arduino current consumption is made, include a power switch or fork and extend the code for sleep mode (and send me a pull request).
Author: Michael Balzer dexter@dexters-web.de
Libraries used:
This is free software under GNU Lesser General Public License (LGPL) https://www.gnu.org/licenses/lgpl.html