created more symbols
diff --git a/bbb_cape/schematic/symbols/adc_buffer-1.sym b/bbb_cape/schematic/symbols/adc_buffer-1.sym
new file mode 100644
index 0000000..d23bea0
--- /dev/null
+++ b/bbb_cape/schematic/symbols/adc_buffer-1.sym
@@ -0,0 +1,124 @@
+v 20110115 2
+B 400 0 1700 1300 3 0 0 0 -1 -1 0 -1 -1 -1 -1 -1
+P 0 1100 400 1100 1 0 0
+{
+T 0 1100 5 10 0 0 0 0 1
+pintype=in
+T 455 1095 5 10 1 1 0 0 1
+pinlabel=IN1
+T 305 1145 5 10 0 1 0 6 1
+pinnumber=IN1
+T 0 1100 5 10 0 0 0 0 1
+pinseq=1
+}
+P 0 800 400 800 1 0 0
+{
+T 0 800 5 10 0 0 0 0 1
+pintype=in
+T 455 795 5 10 1 1 0 0 1
+pinlabel=IN2
+T 305 845 5 10 0 1 0 6 1
+pinnumber=IN2
+T 0 800 5 10 0 0 0 0 1
+pinseq=2
+}
+P 0 500 400 500 1 0 0
+{
+T 0 500 5 10 0 0 0 0 1
+pintype=in
+T 455 495 5 10 1 1 0 0 1
+pinlabel=IN3
+T 305 545 5 10 0 1 0 6 1
+pinnumber=IN3
+T 0 500 5 10 0 0 0 0 1
+pinseq=3
+}
+P 0 200 400 200 1 0 0
+{
+T 0 200 5 10 0 0 0 0 1
+pintype=in
+T 455 195 5 10 1 1 0 0 1
+pinlabel=IN4
+T 305 245 5 10 0 1 0 6 1
+pinnumber=IN4
+T 0 200 5 10 0 0 0 0 1
+pinseq=4
+}
+P 1100 1600 1100 1300 1 0 0
+{
+T 1100 1600 5 10 0 0 0 0 1
+pintype=pwr
+T 1100 1245 5 10 1 1 90 6 1
+pinlabel=GND
+T 1050 1395 5 10 0 1 90 0 1
+pinnumber=GND
+T 1100 1600 5 10 0 0 0 0 1
+pinseq=5
+}
+P 1400 1600 1400 1300 1 0 0
+{
+T 1400 1600 5 10 0 0 0 0 1
+pintype=pwr
+T 1400 1245 5 10 1 1 90 6 1
+pinlabel=VCC
+T 1350 1395 5 10 0 1 90 0 1
+pinnumber=VCC
+T 1400 1600 5 10 0 0 0 0 1
+pinseq=0
+}
+P 2400 1100 2100 1100 1 0 0
+{
+T 2400 1100 5 10 0 0 0 0 1
+pintype=out
+T 2045 1095 5 10 1 1 0 6 1
+pinlabel=OUT1
+T 2195 1145 5 10 0 1 0 0 1
+pinnumber=OUT1
+T 2400 1100 5 10 0 0 0 0 1
+pinseq=7
+}
+P 2400 800 2100 800 1 0 0
+{
+T 2400 800 5 10 0 0 0 0 1
+pintype=out
+T 2045 795 5 10 1 1 0 6 1
+pinlabel=OUT2
+T 2195 845 5 10 0 1 0 0 1
+pinnumber=OUT2
+T 2400 800 5 10 0 0 0 0 1
+pinseq=8
+}
+P 2400 500 2100 500 1 0 0
+{
+T 2400 500 5 10 0 0 0 0 1
+pintype=out
+T 2045 495 5 10 1 1 0 6 1
+pinlabel=OUT3
+T 2195 545 5 10 0 1 0 0 1
+pinnumber=OUT3
+T 2400 500 5 10 0 0 0 0 1
+pinseq=9
+}
+P 2400 200 2100 200 1 0 0
+{
+T 2400 200 5 10 0 0 0 0 1
+pintype=out
+T 2045 195 5 10 1 1 0 6 1
+pinlabel=OUT4
+T 2195 245 5 10 0 1 0 0 1
+pinnumber=OUT4
+T 2400 200 5 10 0 0 0 0 1
+pinseq=10
+}
+T 2700 1500 8 10 0 1 0 0 1
+device=ADC buffer
+T 900 1900 8 10 0 1 0 0 1
+description=buffer for voltage clamping ADC inputs
+T 1200 1900 8 10 0 1 0 0 1
+source=adc_buffer.sch
+T 1700 1400 8 10 1 1 0 0 1
+refdes=X?
+T 1400 1900 8 10 0 1 0 0 1
+numslots=1
+T 100 1400 9 10 1 0 0 0 1
+ADC buffer