Connecting to a MLX90620

In case it helps anyone else, I had created a working/interactive circuit diagram of the above level shifter (I couldn't do the regulator in this software) using some online java software:

http://www.falstad.com/circuit/#%24+1+5.0E-6+10.20027730826997+50+5.0+43 R+592+96+640+96+0+0+40.0+5.0+0.0+0.0+0.5 R+96+96+48+96+0+0+40.0+2.6+0.0+0.0+0.5 w+96+96+96+128+0 w+368+192+368+128+0 w+304+208+304+240+0 w+304+240+464+240+0 w+464+240+464+208+0 r+464+208+464+96+0+4700.0 r+224+176+224+128+0+2200.0 w+224+128+368+128+0 w+224+176+128+176+0 w+224+176+304+176+0 w+464+96+592+96+0 M+544+208+624+208+0+2.5 L+64+176+16+176+0+0+false+2.6+0.0 L+544+304+624+304+0+0+false+5.0+0.0 M+64+288+16+288+0+1.5 w+304+320+304+352+0 w+544+352+544+304+0 w+368+304+368+192+0 r+160+288+160+240+0+2200.0 w+64+288+160+288+0 w+160+288+304+288+0 w+160+240+160+128+0 w+96+128+160+128+0 w+160+128+224+128+0 r+432+352+432+304+0+4700.0 w+304+352+432+352+0 w+432+352+544+352+0 w+432+304+432+96+0 w+464+96+432+96+0 w+128+176+64+176+0 w+544+208+464+208+0 f+368+192+304+192+0+1.5 f+368+304+304+304+0+1.5 x+8+165+84+171+0+24+Input+> x+545+291+621+297+0+24+<+Input o+13+64+0+35+0.3125+9.765625E-5+0+-1 o+16+64+0+34+0.3125+9.765625E-5+1+-1