diff --git a/src/main.cpp b/src/main.cpp
index ffbba5e7..d301be67 100644
--- a/src/main.cpp
+++ b/src/main.cpp
@@ -5,6 +5,7 @@
 #include <libraries/gpiote/app_gpiote.h>
 #include <libraries/timer/app_timer.h>
 #include <softdevice/common/nrf_sdh.h>
+#include <nrf_delay.h>
 
 // nimble
 #define min // workaround: nimble's min/max macros conflict with libstdc++
@@ -300,6 +301,20 @@ int main(void) {
 
   nrf_drv_clock_init();
 
+  // Unblock i2c?
+  nrf_gpio_cfg(pinTwiScl,
+               NRF_GPIO_PIN_DIR_OUTPUT,
+               NRF_GPIO_PIN_INPUT_DISCONNECT,
+               NRF_GPIO_PIN_NOPULL,
+               NRF_GPIO_PIN_S0D1,
+               NRF_GPIO_PIN_NOSENSE);
+  nrf_gpio_pin_set(pinTwiScl);
+  for (uint8_t i = 0; i < 16; i++) {
+    nrf_gpio_pin_toggle(pinTwiScl);
+    nrf_delay_us(5);
+  }
+  nrf_gpio_cfg_default(pinTwiScl);
+
   debounceTimer = xTimerCreate("debounceTimer", 200, pdFALSE, (void*) 0, DebounceTimerCallback);
   debounceChargeTimer = xTimerCreate("debounceTimerCharge", 200, pdFALSE, (void*) 0, DebounceTimerChargeCallback);