diff --git a/readme.md b/readme.md
new file mode 100644
index 0000000..e8a127b
--- /dev/null
+++ b/readme.md
@@ -0,0 +1,20 @@
+Wallas DT/GB Heater Controller on an ESP32C3
+============================================
+
+## Getting Started
+
+As described in the chapter on Risc-V target installation in the [Rust on ESP Book](https://docs.esp-rs.org/book/installation/riscv.html),
+you should install the ESP32c3 target for your rust toolchain by doing:
+
+```bash
+rustup toolchain install stable --component rust-src
+rustup target add riscv32imc-unknown-none-elf
+```
+
+It is advised to run the `--release` version of the application, thus to build and run, do:
+
+```bash
+cargo build --release
+cargo run --release
+```
+
diff --git a/src/httpd.rs b/src/httpd.rs
index 3cfff90..877cb17 100644
--- a/src/httpd.rs
+++ b/src/httpd.rs
@@ -117,12 +117,12 @@ fn page(heading: &str, content: Markup) -> Markup {
                 br;
                 "RISC-V is a registered trademark of RISC-V International · Wallas is a registered trademark of Wallas-Marin Oy · Espressif is a registered trademark of Espressif Systems"
             }
-            dialog #message .dialog-center;
+            dialog #message .dialog-center {};
             dialog #"set-target" .dialog-center {
                 span ."cancel-x" { "🗙" };
                 form {
                     div #"temperature-form" {
-                        input #target type="tage" min="5" max="25" name="target"; 
+                        input #target type="range" min="5" max="25" name="target"; 
                         br;
                         label #"target-label" for="target" { "Target temperature in °C" }; 
                         br;
diff --git a/src/static/app.js b/src/static/app.js
index d1f32e7..30972f6 100644
--- a/src/static/app.js
+++ b/src/static/app.js
@@ -46,7 +46,7 @@ async function LoadLatest(platest) {
         target = json.target;
         platest.innerHTML = `Temperature was ${temperature}°C at ${time} UTC, target temperature was ${target}°C`;
       }
-    })
+    }).catch((error) => { console.log("server unable to respond") });
     await sleep(10000);
   }
 };
@@ -125,10 +125,9 @@ async function LoadGraph(pgraph) {
 
         target_polyline = appendSVGElement(svg, "polyline", {"class": "data target", "points": target_points_str});
         temperature_polyline = appendSVGElement(svg, "polyline", {"class": "data temperature", "points": temperature_points_str});
-        //temperature_polyline.onmouseover = () => { console.log("yup"); };
         pgraph.replaceChildren(graph);
       }
-    })
+    }).catch((error) => { console.log("server unable to respond"); });
     await sleep(10000);
   }
 }
@@ -136,7 +135,6 @@ async function LoadGraph(pgraph) {
 async function set_temperature_dialog() {
     var target = null;
     await fetch("/api/v1/latest").then((response) => response.json()).then((json) => {
-        console.log(json);
         if (json.target) {
             if (json.target < 5) {
                 target = 5;
@@ -146,7 +144,8 @@ async function set_temperature_dialog() {
                 target = json.target;
             }
         }
-    });
+    }).catch((error) => { console.log("server unable to respond"); });
+    if (target == null) return;
     var dialog = document.querySelector("dialog#set-target");
     dialog.showModal();
     var target_label = document.querySelector("label#target-label");
@@ -177,11 +176,12 @@ async function wallas_command(cmd, no_atok, success) {
         } else if (response.status == 204) {
             dialog.innerHTML = success;
         } else {
-            dialog.innerHTML = "Trouble communicating with Wallas Heater, try again later";
+            dialog.innerHTML = "Controller has trouble communicating with Wallas Heater, try again later";
         }
-        setTimeout(() => {
-            dialog.close();
-        }, 5000);
-    });
-}
+    }).catch((error) => { console.log("server unable to respond");
+        dialog.innerHTML = "Controller is unable to respond"; });
+    setTimeout(() => {
+        dialog.close();
+    }, 5000);
+ }
 
diff --git a/src/static/styles.css b/src/static/styles.css
index 56342d0..d4536ec 100644
--- a/src/static/styles.css
+++ b/src/static/styles.css
@@ -83,6 +83,7 @@ button {
     background-color: rgb(160, 171, 185);
     border: 2px solid rgb(160, 171, 185);
     padding: 15px;
+    margin: 0 0.5em 0 0.5em;
     border-radius: 5px;
 }
 button:hover {