diff --git a/DSTAT-temp/src/config/conf_clock.h b/DSTAT-temp/src/config/conf_clock.h
index 7a734eb7dc86b8b3c996c2f527cac91607b8aae4..824a374ff2a314d0d49140a6c1d86b3f49a3e2f4 100644
--- a/DSTAT-temp/src/config/conf_clock.h
+++ b/DSTAT-temp/src/config/conf_clock.h
@@ -93,6 +93,6 @@
 #define CONFIG_OSC_AUTOCAL_RC32MHZ_REF_OSC  OSC_ID_USBSOF
 
 /* Use to enable and select RTC clock source */
-#define CONFIG_RTC_SOURCE           SYSCLK_RTCSRC_ULP
+#define CONFIG_RTC_SOURCE           SYSCLK_RTCSRC_TOSC
 
 #endif /* CONF_CLOCK_H_INCLUDED */
diff --git a/DSTAT-temp/src/experiment.c b/DSTAT-temp/src/experiment.c
index dfc8d313b83dee151e976d17e96067ea9cc55e31..53b1927db7908b7f855878bf07a3b8fdf74ce977 100644
--- a/DSTAT-temp/src/experiment.c
+++ b/DSTAT-temp/src/experiment.c
@@ -34,6 +34,7 @@ volatile uint16_t tcf0period = 0;
 uint32_t skip_samples = 0;
 
 //Private function declarations
+static void precond_rtc_callback(uint32_t time);
 static void porte_int0_lsv(void);
 static void tcf0_ovf_callback(void);
 static void tce1_ovf_callback_lsv(void);
@@ -226,6 +227,69 @@ void pot_exp_stop(void){
 	arch_ioport_set_port_level(IOPORT_PORTB, PIN3_bm|PIN4_bm|PIN5_bm, 0);
 }
 
+void precond(int16_t v1, uint16_t t1, int16_t v2, uint16_t t2){ //assumes potentiostat switches are already set
+	/**
+	 * Performs experiment preconditioning.
+	 *
+	 * @param v1 First potential (DAC index).
+	 * @param t1 First duration (s).
+	 * @param v2 Second potential (DAC index).
+	 * @param t2 Second duration (s).
+	 */
+	
+	while (RTC.STATUS & RTC_SYNCBUSY_bm);
+	RTC.PER = 65535;
+	while (RTC.STATUS & RTC_SYNCBUSY_bm);
+	RTC.CTRL = RTC_PRESCALER_DIV1024_gc; //1s tick
+	rtc_set_callback((rtc_callback_t)precond_rtc_callback);
+	
+	up = 1;
+	
+	//first potential
+	if (v1 > 0){
+		max5443_set_voltage1(v1);
+		rtc_set_alarm(t1);
+		RTC.CNT = 0;
+		pot_exp_start();
+		while (up){
+			if (udi_cdc_is_rx_ready()){
+				if (getchar() == 'a'){
+					precond_rtc_callback(t1);
+					printf("##ABORT\n\r");
+					goto aborting;
+				}
+			}
+		}
+	}
+	
+	up = 1;
+	
+	if (v2 > 0){
+		max5443_set_voltage1(v2);
+		rtc_set_alarm(t2);
+		RTC.CNT = 0;
+		pot_exp_start();
+		while (up){
+			if (udi_cdc_is_rx_ready()){
+				if (getchar() == 'a'){
+					precond_rtc_callback(t2);
+					printf("##ABORT\n\r");
+					goto aborting;
+				}
+			}
+		}
+	}
+	
+	aborting:
+		pot_exp_stop();
+		return;
+}
+
+static void precond_rtc_callback(uint32_t time){
+	up = 0;
+	RTC.INTCTRL |= RTC_COMPINTLVL_OFF_gc;
+}
+
 void cv_experiment(int16_t v1, int16_t v2, int16_t start, uint8_t scans, uint16_t slope){
 	/**
 	 * Perform a CV experiment.
@@ -380,12 +444,12 @@ uint8_t lsv_experiment(int16_t start, int16_t stop, uint16_t slope, int8_t first
         dma_channel_set_trigger_source(&dmach_conf, DMA_CH_TRIGSRC_OFF_gc);
         dma_channel_set_single_shot(&dmach_conf);
 		
-		dma_set_callback(0, lsv_dma_callback);
+		dma_set_callback(0, (dma_callback_t)lsv_dma_callback);
 		dma_channel_set_interrupt_level(&dmach_conf, DMA_INT_LVL_HI);
 
 		dma_channel_write_config(0, &dmach_conf);
 		
-		dma_set_callback(1, lsv_dma_callback1);
+		dma_set_callback(1, (dma_callback_t)lsv_dma_callback1);
 		dma_channel_set_source_address(&dmach_conf, (uint16_t)(uintptr_t)&TCC1.CNTL);
 		dma_channel_write_config(1, &dmach_conf);
 	}
@@ -525,6 +589,7 @@ void ca_experiment(uint16_t steps, uint16_t step_dac[], uint16_t step_seconds[])
 	tc_set_cca_interrupt_level(&TCC0, TC_INT_LVL_MED);
 	TCC0.CNT = 0;
 	
+	max5443_set_voltage1(step_dac[0]);
 	pot_exp_start();
 	
 	for (uint8_t i = 0; i < steps; ++i)
@@ -750,4 +815,4 @@ ISR(PORTD_INT0_vect){
 	if (portd_int0_callback) {
 		portd_int0_callback();
 	}
-}	
\ No newline at end of file
+}
\ No newline at end of file
diff --git a/DSTAT-temp/src/experiment.h b/DSTAT-temp/src/experiment.h
index 93a116e1133de0d884f46fa33cbdd395a99638a4..549a46684cb286b2c5060e6fe58e80429b9cb09b 100644
--- a/DSTAT-temp/src/experiment.h
+++ b/DSTAT-temp/src/experiment.h
@@ -54,6 +54,8 @@
 
 #define SIN_IMP_CYCLEPTS 50
 
+#define RTC_COMPARE_INT_LEVEL RTC_COMPINTLVL_HI_gc
+
 extern uint16_t g_gain;
 extern uint8_t autogain_enable;
 
@@ -64,6 +66,7 @@ int8_t autogainswitch(void);
 void pot_set_gain(void);
 void pot_exp_start(void);
 void pot_exp_stop(void);
+void precond(int16_t v1, uint16_t t1, int16_t v2, uint16_t t2);
 void cv_experiment(int16_t v1, int16_t v2, int16_t start, uint8_t scans, uint16_t slope);
 uint8_t lsv_experiment(int16_t start, int16_t stop, uint16_t slope, int8_t first_run);
 void ca_experiment(uint16_t steps, uint16_t step_dac[], uint16_t step_seconds[]);