diff --git a/docs/MarsHydro_SP3000_PCB.jpg b/docs/MarsHydro_SP3000_PCB.jpg
new file mode 100644
index 0000000000000000000000000000000000000000..8481c5d9b2e817d64fad769ed9826cbc5d71080e
Binary files /dev/null and b/docs/MarsHydro_SP3000_PCB.jpg differ
diff --git a/docs/MarsHydro_SP3000_Ports.jpg b/docs/MarsHydro_SP3000_Ports.jpg
new file mode 100644
index 0000000000000000000000000000000000000000..ef0314829c3f9e17f879092df8dc5a0016b235a5
Binary files /dev/null and b/docs/MarsHydro_SP3000_Ports.jpg differ
diff --git a/docs/PK124WHSP-ECblue_pinout.png b/docs/PK124WHSP-ECblue_pinout.png
index 92382d80491615df630ec832214c8b80b6636b46..3c13517883be5266d8000e776da8ce2f86532401 100644
Binary files a/docs/PK124WHSP-ECblue_pinout.png and b/docs/PK124WHSP-ECblue_pinout.png differ