diff --git a/firmware/atmega/include/pump.h b/firmware/atmega/include/pump.h
new file mode 100644
index 0000000..74e2dee
--- /dev/null
+++ b/firmware/atmega/include/pump.h
@@ -0,0 +1,8 @@
+#include <stdint.h>
+#include <stdbool.h>
+#include <avr/io.h>
+#include <avr/interrupt.h>
+#include "config.h"
+
+void pumpsInit(void);
+void pumpsTrigger(uint8_t digital_pins, int16_t milliseconds);
diff --git a/firmware/atmega/source/pump.c b/firmware/atmega/source/pump.c
new file mode 100644
index 0000000..36829d3
--- /dev/null
+++ b/firmware/atmega/source/pump.c
@@ -0,0 +1,26 @@
+#include <stdint.h>
+#include <avr/io.h>
+#include <avr/interrupt.h>
+
+void pumpsInit(void) {
+    // Set as input
+    DDRD &= ~((1 << PUMP_D7) |
+              (1 << PUMP_D6) |
+              (1 << PUMP_D5) |
+              (1 << PUMP_D4) |
+              (1 << PUMP_D3) |
+              0 | 0 | 0 ));
+    // Disable pullup
+    PORTD &= ~((1 << PUMP_D7) |
+               (1 << PUMP_D6) |
+               (1 << PUMP_D5) |
+               (1 << PUMP_D4) |
+               (1 << PUMP_D3) |
+               0 | 0 | 0 ));
+}
+
+void triggerPump(int8_t pump_pin, int16_t milliseconds) {
+    // turn on pump
+    // watchdog for n milliseconds
+    // turn of pump
+}