got the output check stuff actually compiling and closer to working
diff --git a/frc971/input/sensor_receiver.cc b/frc971/input/sensor_receiver.cc
index 3def0d7..199df99 100644
--- a/frc971/input/sensor_receiver.cc
+++ b/frc971/input/sensor_receiver.cc
@@ -71,7 +71,8 @@
 }
 
 double sonar_translate(uint32_t in) {
-  return static_cast<double>(in) / 1000.0 * 2.0;
+  return static_cast<double>(in) * 10.0 /*us/tick*/ / 147.0 /*in/us*/ *
+         0.0254 /*m/in*/;
 }
 
 double hall_translate(const constants::ShifterHallEffect &k, uint16_t in_low,
diff --git a/frc971/output/motor_writer.cc b/frc971/output/motor_writer.cc
index d42cc05..eefd7d6 100644
--- a/frc971/output/motor_writer.cc
+++ b/frc971/output/motor_writer.cc
@@ -12,11 +12,10 @@
 #include "frc971/control_loops/drivetrain/drivetrain.q.h"
 #include "frc971/control_loops/claw/claw.q.h"
 #include "frc971/control_loops/shooter/shooter.q.h"
+#include "frc971/queues/output_check.q.h"
 
 using ::aos::util::SimpleLogInterval;
 
-using ::frc971::control_loops::drivetrain;
-
 namespace frc971 {
 namespace output {
 
@@ -39,13 +38,14 @@
     values_.solenoid_module = 0;
 
     if (true) {
-      drivetrain.output.FetchLatest();
-      if (drivetrain.output.IsNewerThanMS(kOutputMaxAgeMS)) {
-        LOG_STRUCT(DEBUG, "will output", *drivetrain.output.get());
-        SetPWMOutput(3, drivetrain.output->right_voltage / 12.0, kTalonBounds);
-        SetPWMOutput(6, -drivetrain.output->left_voltage / 12.0, kTalonBounds);
-        SetSolenoid(7, drivetrain.output->left_high);
-        SetSolenoid(8, drivetrain.output->right_high);
+      static auto &drivetrain = ::frc971::control_loops::drivetrain.output;
+      drivetrain.FetchLatest();
+      if (drivetrain.IsNewerThanMS(kOutputMaxAgeMS)) {
+        LOG_STRUCT(DEBUG, "will output", *drivetrain);
+        SetPWMOutput(3, drivetrain->right_voltage / 12.0, kTalonBounds);
+        SetPWMOutput(6, -drivetrain->left_voltage / 12.0, kTalonBounds);
+        SetSolenoid(7, drivetrain->left_high);
+        SetSolenoid(8, drivetrain->right_high);
       } else {
         DisablePWMOutput(3);
         DisablePWMOutput(8);
@@ -59,7 +59,7 @@
           ::frc971::control_loops::shooter_queue_group.output;
       shooter.FetchLatest();
       if (shooter.IsNewerThanMS(kOutputMaxAgeMS)) {
-        LOG_STRUCT(DEBUG, "will output", *shooter.get());
+        LOG_STRUCT(DEBUG, "will output", *shooter);
         SetPWMOutput(7, shooter->voltage / 12.0, kTalonBounds);
         SetSolenoid(6, !shooter->latch_piston);
         SetSolenoid(5, !shooter->brake_piston);
@@ -75,7 +75,7 @@
       static auto &claw = ::frc971::control_loops::claw_queue_group.output;
       claw.FetchLatest();
       if (claw.IsNewerThanMS(kOutputMaxAgeMS)) {
-        LOG_STRUCT(DEBUG, "will output", *claw.get());
+        LOG_STRUCT(DEBUG, "will output", *claw);
         SetPWMOutput(9, claw->intake_voltage / 12.0, kTalonBounds);
         SetPWMOutput(8, claw->intake_voltage / 12.0, kTalonBounds);
         SetPWMOutput(1, -claw->bottom_claw_voltage / 12.0, kTalonBounds);
@@ -94,11 +94,15 @@
       claw_old_.Print();
     }
 
-    ++output_check_;
-    if (output_check_ == 0) output_check_ = 1;
-    ::frc971::output_check_queue.MakeWithBuilder()
-        .pwm_value(output_check_).Send();
-    SetPWMOutput(10, output_check_);
+    {
+      auto message = ::frc971::output_check_queue.MakeMessage();
+      ++output_check_;
+      if (output_check_ == 0) output_check_ = 1;
+      SetRawPWMOutput(10, output_check_);
+      message->sent_value = output_check_;
+      LOG_STRUCT(DEBUG, "sending", *message);
+      message.Send();
+    }
   }
 
   SimpleLogInterval drivetrain_old_ =
diff --git a/frc971/output/output.gyp b/frc971/output/output.gyp
index bc2d604..de41943 100644
--- a/frc971/output/output.gyp
+++ b/frc971/output/output.gyp
@@ -53,6 +53,7 @@
         '<(AOS)/common/logging/logging.gyp:queue_logging',
         '<(DEPTH)/frc971/control_loops/claw/claw.gyp:claw_loop',
         '<(DEPTH)/frc971/control_loops/shooter/shooter.gyp:shooter_loop',
+        '<(DEPTH)/frc971/queues/queues.gyp:output_check',
       ],
     },
   ],
diff --git a/frc971/queues/output_check.q b/frc971/queues/output_check.q
new file mode 100644
index 0000000..0573426
--- /dev/null
+++ b/frc971/queues/output_check.q
@@ -0,0 +1,8 @@
+package frc971;
+
+message OutputCheck {
+	uint8_t sent_value;
+};
+// Each message here represents a value that was sent to the cRIO.
+// The sent timestamp of the message is when the value was sent.
+queue OutputCheck output_check_queue;
diff --git a/frc971/queues/queues.gyp b/frc971/queues/queues.gyp
index 8434437..d71be25 100644
--- a/frc971/queues/queues.gyp
+++ b/frc971/queues/queues.gyp
@@ -22,19 +22,14 @@
       'includes': ['../../aos/build/queues.gypi'],
     },
     {
-      'target_name': 'frc971_queues_so',
-      'type': 'loadable_module',
-      'sources': ['<@(queue_files)'],
+      'target_name': 'output_check',
+      'type': 'static_library',
+      'sources': [
+        'output_check.q',
+      ],
       'variables': {
         'header_path': 'frc971/queues',
       },
-      'dependencies': [
-      ],
-      'direct_dependent_settings': {
-        'variables': {
-          'jni_libs': ['frc971_queues_so'],
-        },
-      },
       'includes': ['../../aos/build/queues.gypi'],
     },
   ],