Hard rev limiter 1.2.0 - Revision history

Brentp: removed extraneous V3 Controller heading

2011-03-08T18:28:15Z

removed extraneous V3 Controller heading

← Older revision		Revision as of 18:28, 8 March 2011
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	</center>		</center>

	~~=====V3 Controller=====~~
	Slide the board into one of the slots above the main board.		Slide the board into one of the slots above the main board.

Brentp: moved diagram to V3 controller section

2009-12-10T21:13:22Z

moved diagram to V3 controller section

← Older revision		Revision as of 21:13, 10 December 2009
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	==Installing the Hard Rev Limiter==		==Installing the Hard Rev Limiter==

	~~===Wiring diagram===~~
	~~[[Image:hard_rev_limit_wiring_diagram.png]]~~

	===Physical Installation===		===Physical Installation===
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	=====V3 Controller=====		=====V3 Controller=====
	Slide the board into one of the slots above the main board.		Slide the board into one of the slots above the main board.

			======External Wiring Diagram======
			[[Image:hard_rev_limit_wiring_diagram.png]]

	With this approach, several wiring possibilities exist:		With this approach, several wiring possibilities exist:

Brentp: /* Installing the Hard Rev Limiter */ added photos for hard rev limiter V4

2008-06-18T07:27:08Z

Installing the Hard Rev Limiter: added photos for hard rev limiter V4

@@ Line 174: / Line 174: @@
 ====Integrating into the MJLJ enclosure====
-The board has been sized to fit the MJLJ enclosure, and it it possible to slide in the board into one of the extra slots of the case.
+The Rev Limiter board is sized to fit both the V3 and V4 controller. Rotate the controller to fit the enclosure rails.
 With this approach, several wiring possibilities exist:

Brentp: added illuminated magnifying glass

2008-06-08T15:44:32Z

added illuminated magnifying glass

← Older revision		Revision as of 15:44, 8 June 2008
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	<center>		<center>
	[[Image:essential_smt_solder_tools.jpg]]		[[Image:essential_smt_solder_tools.jpg]]
	[[Image::illuminated_magnifying_glass.jpg]]		<br>
			[[Image:illuminated_magnifying_glass.jpg]]
	<br>''The essential tools for SMT work''		<br>''The essential tools for SMT work''
	</center>		</center>

Brentp: /* Assembling the kit */

2008-06-08T15:42:20Z

Assembling the kit

← Older revision		Revision as of 15:42, 8 June 2008
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	<center>		<center>
	[[Image:essential_smt_solder_tools.jpg]]		[[Image:essential_smt_solder_tools.jpg]]
			[[Image::illuminated_magnifying_glass.jpg]]
	<br>''The essential tools for SMT work''		<br>''The essential tools for SMT work''
	</center>		</center>
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	*Probably the best tool - a cross-action set of tweezers. This tool is normally closed, allowing you to hold parts with a relaxed grip and reduced tremors.		*Probably the best tool - a cross-action set of tweezers. This tool is normally closed, allowing you to hold parts with a relaxed grip and reduced tremors.
	*Solder wick. Too much solder and you'll create ugly blobs and solder spikes. use this to clean up your joints by drawing away excess solder.		*Solder wick. Too much solder and you'll create ugly blobs and solder spikes. use this to clean up your joints by drawing away excess solder.
			*A magnifying glass, preferably illuminated, is useful for identifying package markings and inspecting solder joints.

	<center>		<center>

Brentp: /* Physical Installation */ adjusted installation instructions

2008-04-17T08:08:33Z

Physical Installation: adjusted installation instructions

← Older revision		Revision as of 08:08, 17 April 2008
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	===Physical Installation===		===Physical Installation===

	It's up to the user to determine how to install the rev limiter module~~, and~~ a ~~variety~~ of ~~possibilities exist~~.		It's up to the user to determine how to install the rev limiter module. Following are a couple of possible installation options.

	~~One consideration is heat-~~ Since the resistor array generates heat when rev-limiting is active, ambient temperature and air flow across the module will affect the duty-cycle of the unit- meaning how often and long you'll be able to be 'on' the rev-limiter.
			Since the resistor array generates heat when rev-limiting is active, ambient temperature and air flow across the module will affect the duty-cycle of the unit- meaning how often and long you'll be able to be 'on' the rev-limiter.

	TODO: add duty-cycle testing results		TODO: add duty-cycle testing results
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	With this approach, several wiring possibilities exist:		With this approach, several wiring possibilities exist:

	* Cut a hole in the end plate, ~~externally expose~~ the ~~connectors and wire~~ the ~~module externally.~~		* Cut a hole in the end plate, and route all wires outside the case, looping back to the MJLJ wiring harness plug;
	* Cut a hole in the end plate, externally expose the +12v and coil pack connectors, but connect the ground and trigger with jumpers to the inside of the case.		* Cut a hole in the end plate, externally expose the +12v and coil pack connectors, but connect the ground and trigger with jumpers to the inside of the case.
	* Most ambitious: wire everything internally:		* Most ambitious: wire everything internally:
	** Jumper GND connection to MJLJ GND		** Jumper GND connection to MJLJ GND;
	** Jumper +12V connection to MJLJ +12V		** Jumper +12V connection to MJLJ +12V (14 gauge wire);
	** Jumper trigger input to REV_LIMIT output on MJLJ board		** Use a thicker gauge wire (14 gauge) for MJLJ +12V power, if necessary, as the +12v supply will supply current to the coil in addition to powering the MJLJ electronics;
	** Cut the REV_LIMIT trace on the MJLJ board running from the ULN2003 to the REV_LIMIT connector pin. The REV_LIMIT pin will now be the new COIL power supply.		** Jumper trigger input to REV_LIMIT output on MJLJ board;
	** Use a thicker gauge wire (14 - 12ga) for MJLJ +12V power, if necessary: This will now feed current to the coil in addition to powering the MJLJ electronics.		** Cut the REV_LIMIT trace on the MJLJ board running from the ULN2003 to the REV_LIMIT connector pin. The REV_LIMIT pin will now be the new COIL power supply..
	** Connect the Rev limit COIL output to REV_LIMIT pin on MJLJ connector.		** Connect the Rev limit COIL output to REV_LIMIT pin on MJLJ connector.

Brentp: /* Install terminal block */ removed terminal block section

2008-04-17T08:00:44Z

Install terminal block: removed terminal block section

← Older revision		Revision as of 08:00, 17 April 2008
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	<br>''Tacking down Q1 before soldering the remaining pins''		<br>''Tacking down Q1 before soldering the remaining pins''
	</center>		</center>
	~~===Install terminal block===~~

	~~Install the terminal blocks with the wire entry point pointing away from the board.~~

	===Final Inspection===		===Final Inspection===

Brentp: /* Surface mount soldering */ grammar

2008-04-17T07:59:21Z

Surface mount soldering: grammar

← Older revision		Revision as of 07:59, 17 April 2008
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	===Surface mount soldering===		===Surface mount soldering===
	Soldering lead-less surface mount components ~~typically~~ involves tacking one lead down to the board to fix it in place and then working on the remaining leads. With the smaller components, be careful to not apply excessive heat- just enough is needed to flow the solder into the joint. Excessive heat, at minimum, will cause small parts to slide off the pads, and at worst, can destroy them.		Soldering lead-less surface mount components usually involves tacking one lead down to the board to fix it in place and then working on the remaining leads. With the smaller components, be careful to not apply excessive heat- just enough is needed to flow the solder into the joint. Excessive heat, at minimum, will cause small parts to slide off the pads, and at worst, can destroy them.

	==Installing the parts==		==Installing the parts==

Brentp: /* Installing supporting components */ adjusted Q1 installation instructions

2008-04-17T07:57:42Z

Installing supporting components: adjusted Q1 installation instructions

← Older revision		Revision as of 07:57, 17 April 2008
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	===Installing supporting components===		===Installing supporting components===

	Install Q1. ~~Pick up the~~ transistor ~~across it's width and bring it into position over the pad where you previously applied the solder blob~~. ~~Heat up~~ the ~~pad so~~ the ~~solder flows over~~ the ~~transistor's lead. '''Be careful~~ to ~~minimize heat exposure on this small part'''~~.		Install Q1. For kit builders, a 2N3906 PNP transistor has been supplied for ease of assembly. Insert Q1 with the orientation shown, leaving enough lead length to fold the transistor flat against the board- this will be needed to ensure low profile installations.

	<center>		<center>
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	<br>''Soldering Q1''		<br>''Soldering Q1''
	</center>		</center>

	~~Once the transistor is tacked into position, apply a small amount of solder to to the other two pads of Q1.~~

	Using the same technique as the power resistors, install the 10K resistor for R11 and the 100K resistor for R12. Solder the other side of the resistors.		Using the same technique as the power resistors, install the 10K resistor for R11 and the 100K resistor for R12. Solder the other side of the resistors.

Brentp at 07:53, 17 April 2008

2008-04-17T07:53:10Z

← Older revision		Revision as of 07:53, 17 April 2008
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	===Board===		===Board===
	The module is housed on a small, low profile board with the exclusive use of rugged surface mount components. The board is sized to slide into one of the available slots of the MJLJ enclosure; or you can mount it to suit your application.		The module is housed on a small, low profile board with the exclusive use of rugged surface mount components. The board is sized to slide into one of the available slots of the MJLJ enclosure; or you can mount it to suit your application.
			[[Image:hard_rev_lim_assembled_1.2.0.jpg\|center]]

	==Assembling the kit==		==Assembling the kit==