Questions
Crank sensor
I'm looking at using a VR sensor to pick up on a 60-2 toothed wheel which will be attached to the crank pulley.
- From what I can gather, it's best to count the gaps, which leads to a wheel with a 3 degree tooth followed by a 3 degree gap, all the way around the wheel. Then the -2 is achieved by not machining two of these gaps. Is this correct?
- I read today that due to noise etc, it is preferable to connect the VR sensor directly to the board, rather than through the EC36. Correct?
At this stage it looks like I'll need a number of extra connections through the endplate, so far:
- MAP pneumatic tube
- VR sensor
- PS2 keyboard
- LCD
Looks like it may be necessary to mount a number of these on the rear endplate with long cables so I can remove the board from the case if necessary.
Answered Questions
MAP Sensor
- in manual the sensor is mounted on the BOTTOM side of the board
- but I have since seen another image which shows the sensor mounted on the TOP side of the board
I recommend mounting MAP on the top of the board. Better for getting the tube through the frontplate. Note that MPX4250AP pins must be bent to the other direction depending on the top/bottom (so that notched pin is close to AVR in any case)
Progress
- 29 May 2005 Connected PS2 keyboard. Can now change screens etc without use of a laptop.
- 23 May 2005 Have an LCD attached, got the LCD going, and added an inline fuse to the power supply.
- 18 May 2005 Got my "Hello>" back from the board as well as the test screen. My variable power supply only allows current limiting at 35mA or 1.2A, so will have to get a fuse before powering it up again.
- 16 May 2005 Recently received my v3.2. Currently in the process of soldering on the components required to get power onto the board.