diff --git a/ds/ADP3338.pdf b/ds/ADP3338.pdf
new file mode 100644
index 0000000..e3d9a77
Binary files /dev/null and b/ds/ADP3338.pdf differ
diff --git a/ds/ESP32-WROOM-32E.pdf b/ds/ESP32-WROOM-32E.pdf
new file mode 100644
index 0000000..c97108c
Binary files /dev/null and b/ds/ESP32-WROOM-32E.pdf differ
diff --git a/ds/PCA9306.pdf b/ds/PCA9306.pdf
new file mode 100644
index 0000000..9fffe56
Binary files /dev/null and b/ds/PCA9306.pdf differ
diff --git a/ds/T491.pdf b/ds/T491.pdf
new file mode 100644
index 0000000..049d0c3
Binary files /dev/null and b/ds/T491.pdf differ