JP1 and Sb1/SB2 on Microsquirt V3
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Read the manual to see if your question is answered there before posting. If you have questions about MS1/Extra or MS2/Extra or other non-B&G code configuration or tuning, please post them at http://www.msextra.com The full forum rules are here: Forum Rules, be sure to read them all regularly.
JP1 and Sb1/SB2 on Microsquirt V3
Hi, i was wordering what the JP1 connector is made for and why is there on the botton of the microsquirt two bridges (SB1 and SB2)?
Re: JP1 and Sb1/SB2 on Microsquirt V3
The JP1 connector is to allow a BDM cable to be used for live debugging and bootloader repair, generally by someone who knows a LOT more about programming these things than I do! 
The two solder jumpers, when filled, bring a shunt resistor across the VR+ and VR- input terminals, reducing the strength of the input signal and preventing false triggers at high RPM.
The two solder jumpers, when filled, bring a shunt resistor across the VR+ and VR- input terminals, reducing the strength of the input signal and preventing false triggers at high RPM.
Re: JP1 and Sb1/SB2 on Microsquirt V3
Thanks a lot for the info.
Wouldn't it be a great idea to improve the documentation of Microsquirt, because for example i have seen nowhere informations about JP1 and SB1/SB2?
Just an idea...
Wouldn't it be a great idea to improve the documentation of Microsquirt, because for example i have seen nowhere informations about JP1 and SB1/SB2?
Just an idea...
Re: JP1 and Sb1/SB2 on Microsquirt V3
The documentation was significantly re-written with the new V3.0 model; the info about the jumpers is here. Note that the two jumpers are used one per circuit, VR1 & VR2; re-reading my previous comment, it occurs to me that it could be read that you always fill in both. One or two or none, as needed ...
Indexing has always been a bane of the Megasquirt / Microsquirt docs. While the presentation of the info on the individual pages in the newest writing is better, they've lost a fair bit of that searchability.
Indexing has always been a bane of the Megasquirt / Microsquirt docs. While the presentation of the info on the individual pages in the newest writing is better, they've lost a fair bit of that searchability.