Megasquirt vr board
The FAQ sticky has the schematic(post #6, Third last pic) to use with the RX-7 CAS. You could compare it to the jb board schematic to see what's different. If you are using a V3.0 megasquirt board you only need to build the right side LM1815 circuit in both schematics (U2).
http://www.jbperf.com/dual_VR/dual_VR_v1_0_sch.JPG
Just a quick look, looks like you would need to change R10 to 82K ohm and C8 to .01 uf and jumper pin 2-3 on JP3 on the JP perf. board. Also there is no R7 in the FAQ schematic on the VR2 input circuit. I'm guessing you could just leave that out.
http://www.jbperf.com/dual_VR/dual_VR_v1_0_sch.JPG
Just a quick look, looks like you would need to change R10 to 82K ohm and C8 to .01 uf and jumper pin 2-3 on JP3 on the JP perf. board. Also there is no R7 in the FAQ schematic on the VR2 input circuit. I'm guessing you could just leave that out.
Last edited by The Griffin; Sep 25, 2008 at 12:10 AM.
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