More Balance control electronics parts 14/6/14:

Sparkfun 6 degree of freedom (DOF) Inertial measurement unit (IMU):

US Sparkfun site:

https://www.sparkfun.com/products/10121

UK supplier:

http://proto-pic.co.uk/imu-digital-combo-board-6-degrees-of-freedom-itg3200-adxl345/

SERIAL 7 segment 4 digit displays from Sparkfun

(Instead of millions of wires from Arduino to each display, these just have 5V power, GND and a single serial transmit wire from the Arduino to the display. This means the Arduino Uno running “Software Serial” code can control 3 of these with no problems:

US website:

https://www.sparkfun.com/products/11442

UK supplier:

http://www.hobbytronics.co.uk/7segment-serial-display-green?utm_source=google&utm_medium=googleshopping&utm_campaign=googlebase&gclid=CjkKEQjw5e-cBRDysazatpTm5b8BEiQAWxTHh3CkG_1EvzuOCBxjqrGpfYGs9gtD8FARtM1O6XOFn2vw_wcB

DC/DC step down voltage regulator 9V to power the 2 Arduinos in control electronics:

Tracopower TSR-1-2490

US site:

http://www.newark.com/tracopower/tsr-1-2490/dc-dc-conv-step-down-switching/dp/86P6890

UK site:

http://www.amazon.co.uk/Converter-DC-24V-Sip-QTY/dp/9820666252

NOTE: We also need a Tracopower TSR-1-2450 which looks exactly the same but puts out 5V not 9V. This one will be used to provide power for the serial LED displays as we do not want to overload the on board 5V regulator on the Arduino Uno.

Small on/off switch to turn the two Arduino boards on and off. Example:

Ribbon cable.

Example website:

http://www.ebay.co.uk/itm/Grey-Ribbon-Cable-Wire-34-Way-Per-Metre-/301137855697?pt=UK_BOI_Electrical_Components_Supplies_ET&hash=item461d3704d1

Note: Does not have to be exactly the same as this. “20-way” would also be fine, or a pair of “10-way” cables from under seat where Arduino live, to front of the machine, where the displays / controls will live.

Potentiometers, 4 of them, 10K Ohms each:

Example:

http://www.ebay.co.uk/itm/1-5-10-20-50-100-500-K-M-ohm-Linear-Logarithmic-Mono-Stereo-Pot-Potentiometer-/170703080727?pt=UK_BOI_Electrical_Components_Supplies_ET&var=&hash=item27beb24d17

Also need 4 knobs to fit to them.

CIRCUIT BREAKER to protect your OSMC catching fire when the motor jams or shorts out. OSMC rated at around 150 Amps when it has a cooling fan on it. Therefore having “lost” an OSMC in the past, we choose a circuit breaker that trips out at about 75 Amps, this should preserve the OSMC hopefully! It also functions as the main power on/off switch. Mine is very similar to this one.

Example:

http://www.ebay.co.uk/itm/Durite-70-Amp-12-24v-DC-Panel-Mounting-Circuit-Breaker-0-388-70-/321200698065?pt=UK_CarsParts_Vehicles_CarParts_SM&hash=item4ac90db2d1

Here is a possibly cheaper one but the 80A one is out of stock, they still have the 60A one though, see below:

http://www.ebay.co.uk/itm/20-30-50-60-80-100A-Car-Stereo-Audio-Inline-Circuit-Breaker-Reset-Fuse-12V-24V-/310793751700?pt=UK_BOI_CircuitBreakers_RL&var=&hash=item485cc04c94