diff --git a/Source/system/adc.c b/Source/system/adc.c
new file mode 100644
--- /dev/null
+++ b/Source/system/adc.c
@@ -0,0 +1,97 @@
+/*
+ * FeatherHAB
+ *
+ * This file is part of FeatherHAB.
+ *
+ * FeatherHab is free software: you can redistribute it and/or modify
+ * it under the terms of the GNU Affero General Public License as published by
+ * the Free Software Foundation, either version 3 of the License, or
+ * (at your option) any later version.
+ *
+ * FeatherHab is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU Affero General Public License for more details.
+ *
+ * You should have received a copy of the GNU Affero General Public License
+ * along with FeatherHAB. If not, see <http://www.gnu.org/licenses/>.
+ *
+ * Ethan Zonca
+ *
+ */
+
+#include "stm32f0xx_hal.h"
+#include "system/adc.h"
+
+ADC_HandleTypeDef hadc;
+DMA_HandleTypeDef hdma_adc;
+
+#define ADC_BUF_LEN 1
+uint16_t adc_buffer[ADC_BUF_LEN];
+
+
+void adc_init(void)
+{
+
+    __ADC1_CLK_ENABLE();
+
+	GPIO_InitTypeDef GPIO_InitStruct;
+    GPIO_InitStruct.Pin = GPIO_PIN_6;
+    GPIO_InitStruct.Mode = GPIO_MODE_ANALOG;
+    GPIO_InitStruct.Pull = GPIO_NOPULL;
+    HAL_GPIO_Init(GPIOA, &GPIO_InitStruct);
+
+
+	ADC_ChannelConfTypeDef sConfig;
+	hadc.Instance = ADC1;
+	hadc.Init.ClockPrescaler = ADC_CLOCK_ASYNC;
+	hadc.Init.Resolution = ADC_RESOLUTION12b;
+	hadc.Init.DataAlign = ADC_DATAALIGN_RIGHT;
+	hadc.Init.ScanConvMode = ADC_SCAN_DIRECTION_FORWARD;
+	hadc.Init.EOCSelection = EOC_SEQ_CONV;
+	hadc.Init.LowPowerAutoWait = DISABLE;
+	hadc.Init.LowPowerAutoPowerOff = DISABLE;
+	hadc.Init.ContinuousConvMode = ENABLE;
+	hadc.Init.DiscontinuousConvMode = DISABLE;
+	hadc.Init.ExternalTrigConvEdge = ADC_EXTERNALTRIGCONVEDGE_NONE;
+	hadc.Init.DMAContinuousRequests = ENABLE;
+	hadc.Init.Overrun = OVR_DATA_OVERWRITTEN;
+	HAL_ADC_Init(&hadc);
+
+	sConfig.Channel = ADC_CHANNEL_6;
+	sConfig.Rank = ADC_RANK_CHANNEL_NUMBER;
+	sConfig.SamplingTime = ADC_SAMPLETIME_239CYCLES_5;
+	HAL_ADC_ConfigChannel(&hadc, &sConfig);
+
+
+	__DMA1_CLK_ENABLE();
+		HAL_NVIC_SetPriority(DMA1_Channel1_IRQn, 0, 0);
+	HAL_NVIC_EnableIRQ(DMA1_Channel1_IRQn);
+
+    hdma_adc.Instance = DMA1_Channel1;
+    hdma_adc.Init.Direction = DMA_PERIPH_TO_MEMORY;
+    hdma_adc.Init.PeriphInc = DMA_PINC_DISABLE;
+    hdma_adc.Init.MemInc = DMA_MINC_ENABLE;
+    hdma_adc.Init.PeriphDataAlignment = DMA_PDATAALIGN_HALFWORD;
+    hdma_adc.Init.MemDataAlignment = DMA_MDATAALIGN_HALFWORD;
+    hdma_adc.Init.Mode = DMA_CIRCULAR;
+    hdma_adc.Init.Priority = DMA_PRIORITY_LOW;
+    HAL_DMA_Init(&hdma_adc);
+
+    __HAL_LINKDMA(&hadc,DMA_Handle,hdma_adc);
+
+
+    HAL_ADC_Start_DMA(&hadc, adc_buffer, ADC_BUF_LEN);
+
+
+}
+
+uint8_t adc_get_vbatt(void)
+{
+	return adc_buffer[0] / 62.5; // tenths of volts ish
+}
+
+DMA_HandleTypeDef* adc__hdma_gethandle(void)
+{
+	return &hdma_adc;
+}