Rodaggio automatizzato, parte 1

Sebbene i motori brushless (senza spazzole) abbiano quasi completamente rimpiazzato i motori a combustione interna utilizzati per aeromodelli radio controllati di piccole e medie imensioni, molti appassionati preferiscono ancora i motori a combustione interna (i/c). Ma mentre un motore elettrico può essere portato alla massima potenza immediatamente dopo la sua messa in servizio, un motore a combustione interna necessita di un periodo di rodaggio prima di poter essere usato a pieno regime. L’idea alla base del progetto qui descritto, è di automatizzare questa importante fase.

Technical specifications
- 32-bit ARM7 processor running at 59 MHz, 128 kB flash memory and 64 kB RAM.
- Throttle control by standard model servo. Configurable travel and direction of movement.
- Microcontroller-driven glow plug heating.
- Engine speed measurement from 0 to over 30,000 rpm.
- Engine temperature measurement from 0–160 °C.
- Ambient temperature measurement
- Mixture adjustment managed by the on-board software.
- Mobile pocket terminal with 4-line / 20 character alphanumeric LCD display, push buttons and encoder knob.
- USB link
- Direct Servo Control (DSC) interface
- Emergency stop push button
- Power supply: 7–15 Vdc

March 17, 2009. Corrections

1. Page 31, central column, line before header “Construction”. Text should read:

And lastly, the terminal's LCD backlight is controlled by a P-channel MOS transistor.

2. At the beginning of the paragraph "Testing the pocket terminal (GMMI)", 'JP8' should read 'JP6'.

3. D10 in drawing 080253-14 (main schematic) should be 3V3 , not 5V6.

4. Do not to use a readymade 'type 1'  RJ6 cable (crossed wires!) to hook up the pocket terminal to the main board, but a straight 1-on-1 cable. This is also known as '6 pole 6 connector RJ11 plug to plug modular cable, Straight-Reverse' (pin1 to pin1, pin2 to pin2… pin6 to pin6). This cable will be included in the kit for the project.