muratangi 0 Posted May 11, 2018 Share Posted May 11, 2018 Greetings, I have a project idea to control SCRs connected to three phase electric heater. I need to know which phase is behind and which phase is ahead with respect to selected/chosen phase. IMO, three pins with interrupts attached to them may satisfy the need. Each interrupt will be driven/triggered by seperate zero crossing circuits. After deciding which phase leading which one lagging, I may be capable to fire the SCRs at desired angles. Could someone tell me which msp430gXYZ chip is suitable for the job and has available (more than one) interrupt pins? I am a mechanical engineer by education. So, feel free to criticise my approach with terms of electrics discipline. Murat Quote Link to post Share on other sites
Clavier 34 Posted May 11, 2018 Share Posted May 11, 2018 In general, the G2xx chips have 16 interrupt-capable pins (if they have that many pins at all). For development, I'd suggest the G2553 on the LaunchPad. energia 1 Quote Link to post Share on other sites
muratangi 0 Posted May 11, 2018 Author Share Posted May 11, 2018 Thank you for your post Clavier. I will order one. Quote Link to post Share on other sites
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