diff --git a/fw/Core/Src/main.c b/fw/Core/Src/main.c
index aab91ee..9f093f4 100644
--- a/fw/Core/Src/main.c
+++ b/fw/Core/Src/main.c
@@ -151,8 +151,8 @@ int main(void)
     float voltage_ch0 = (val_ch0 * 3.3f) / 4095.0f * adc_voltage_divider;
     //float voltage_ch1 = (val_ch1 * 3.3f) / 4095.0f * adc_voltage_divider;
 
-    // simple regulation
-    const float target_voltage = 3.0f;
+    // simple bang-bang regulation
+    const float target_voltage = 3.5f;
     if (voltage_ch0 < target_voltage)
     {
       state = GPIO_PIN_SET;