> ## Documentation Index
> Fetch the complete documentation index at: https://docs.customtypeone.com/llms.txt
> Use this file to discover all available pages before exploring further.
# Wifi And Bluetooth
If you have multiple SugarPixels, you can rename each one to make it easier to identify.
* Default names look like SugarPixel-04C7
* Example custom names: Kitchen, Bedroom, Joseph
**Name rules:**
* 4–12 characters
* Letters and numbers only
* No spaces or special characters
Because phones cache Bluetooth device names, the updated name may not appear immediately. If needed, restart your phone and/or SugarPixel.
Expand the instruction section below that matches your network.
SugarPixel connects to **2.4 GHz home WiFi** networks.
**To connect:**
1. Select your WiFi network from the list
2. Enter your WiFi password
When you exit the password field, SugarPixel will immediately attempt to connect.
* If successful, SugarPixel will prompt you to Add CGM (first-time setup) or begin downloading readings.
* If unsuccessful, SugarPixel will display **“Check WiFi.” Please expand the Home WiFi Advanced/Troubleshooting section below.**
**Notes:**
* If your network is not listed, tap **Rescan**. If it is still not listed, it may be set as 5Ghz only.
* If your network has no password, enable **No WiFi Password**.
If SugarPixel doesn't connect to your home WiFi, start with the basics. Most connection issues are caused by simple setup problems.
### **First: Check the Basics**
Before trying advanced steps:
* Reboot your **WiFi router**
* Wait **5 minutes**
* Restart **SugarPixel**
Then double-check your WiFi details in the app:
* Passwords are **case-sensitive**
* Make sure there are **no extra spaces** at the beginning or end
* Check for auto-capitalization of the first character
* Watch for common look-alikes:
O (oh) vs 0 (zero), l (el) vs 1 (one)
If SugarPixel still shows **“Check WiFi”**, continue below.
***
### **Guest Network Setup (Recommended Solution)**
If the basics are correct, the issue is usually a router compatibility conflict. This is common with:
* Dual-band (2.4 / 5 GHz combined) networks
* Mesh routers
* WiFi extenders
* Router firmware updates (even if SugarPixel worked previously)
The **simplest and most reliable solution** is to use your router’s **Guest Network**.
### **How to Set Up a Guest Network**
1. Log in to your WiFi router’s settings
(usually via a mobile app or a web address printed on the router)
2. Find **Guest Network** under WiFi settings and enable it
3. If available, set the Guest Network to **2.4 GHz only**
4. Give it a unique name and password
* Avoid spaces and special characters
5. In the SugarPixel app, select this new WiFi network and connect
For most users with mesh or extender setups, this resolves the issue immediately.
University networks often use special authentication methods. Most students connect using **device registration**, not a standard WiFi password.
If you’re still unable to connect after following the steps below, contact us with the name of your school.
***
### **Option 1: Device Registration (Most Common)**
Most universities allow devices like smart TVs or gaming systems to connect by **registering the device**.
To find your school’s instructions, search google for:\
\*\*“\ register device WiFi”\*\*
Once you find the registration page, follow these steps:
1. In the SugarPixel app, open **WiFi & Bluetooth** and write down the **MAC address** shown at the bottom of the screen.
2. Register SugarPixel on the university website using that MAC address.
*(Some schools now provide a personal WiFi password instead of using MAC addresses.)*
3. In the SugarPixel app, enter the **WiFi network name** provided by the university.
* If it’s not listed, toggle **Type Name** and enter it manually.
4. If a password is provided, enter it.
* If no password is required, enable **No WiFi Password**.
5. Continue with the rest of the SugarPixel setup.
***
### **Option 2: Standard WiFi Password (Less Common)**
Some universities offer a traditional WiFi network that uses only a password.
If available, SugarPixel can connect as long as:
* The network supports **2.4 GHz WiFi**
* No web login page is required
***
### **Option 3: Contact University IT**
If you’re unsure which option applies, contact your university’s IT department.
They may:
* Assist with device registration
* Allow a small personal router in your room
* Provide an alternate network for medical or accessibility devices
If needed, ask them to contact us at [**support@customtypeone.com**](mailto:support@customtypeone.com).
***
### **Option 4: Mobile Hotspot (Fallback)**
If none of the above options work, a mobile hotspot can be used.
See the **Mobile Hotspot** section below for setup details and considerations.
If SugarPixel will be used at a **school or workplace**, setup usually requires assistance from the IT department. Before attempting setup yourself, provide IT with the information below.
If they have questions or need assistance, ask them to contact us at:
[**support@customtypeone.com**](mailto:support@customtypeone.com)
***
### **Network Requirements**
* **2.4 GHz WiFi only**
* **WPA2 (password-based) WiFi supported**
* **Enterprise WiFi (username/password) is not supported**
* **Captive portals are not supported**
* SugarPixel does **not** need to be on the same WiFi as the phone running the CGM app
***
### **Firewall / Network Access Requirements**
* All connections use **HTTPS**, except time synchronization
* **NTP** uses port **123**\
### **CGM Data Endpoints**
*(Only the CGM in use needs to be allowed)*
* **Dexcom:** \*.[dexcom.com](http://dexcom.com)
* **Libre:** \*.[libreview.io](http://libreview.io)
* **Gluroo:** \*.[gluroo.com](http://gluroo.com)
* **Nightscout:** patient-specific
* The Nightscout URL may need to be provided to IT
### **Time Synchronization**
* \*.[ntp.org](http://ntp.org)
* Used to determine the closest time servers
* Additional returned NTP servers must also be reachable
* A custom time server can be used if required. See expandable instructions below.
### **SugarPixel Software Updates**
* [cdn.shopify.com](http://cdn.shopify.com)
***
### **Important Notes for IT**
* This list may change as features are added or modified.
* Whitelisting by **SugarPixel MAC address** is the most reliable long-term solution.
* The MAC address is shown in the **WiFi settings** screen of the SugarPixel app.
Public WiFi networks often require a popup screen to accept terms, enter an email, or log in. SugarPixel cannot connect directly to these networks because it does not have a screen to complete that step.
To use SugarPixel on public WiFi (hotels, cafes, travel, etc.), you must connect it through a **mobile hotspot**.
💡 **Tip:** If you set your hotspot **name and password the same as your home WiFi**, SugarPixel will connect automatically when the hotspot is enabled—no reconfiguration needed. Be sure to enable **Compatibility Mode** (2.4 GHz).
***
### **Hotspot Requirements**
* Hotspot **name** must contain only letters and numbers (no spaces or special characters)
* iPhone: *Settings → General → About → Name*
* Android: usually found in hotspot settings
* Hotspot **password** must also avoid spaces and special characters
* Enable **Compatibility Mode** (or similar) so the hotspot uses **2.4 GHz WiFi**
*(This is unrelated to 5G cellular service.)*
***
### **Connect SugarPixel to Your Hotspot**
### **If you have a second phone or tablet (Recommended)**
Most phones disable hotspots while actively using Bluetooth.
1. Enable the hotspot on your phone
2. Restart SugarPixel by unplugging power
3. Open the SugarPixel app on a second device and connect
4. Select the hotspot WiFi name and enter the password
5. SugarPixel should connect immediately
***
### **If you only have one phone**
1. Open the SugarPixel app and connect to SugarPixel
2. Toggle WiFi to **Type Name**
3. Manually enter the hotspot name and password (case-sensitive)
4. Tap **Disconnect** in the app and unplug SugarPixel
5. Enable the hotspot on your phone
6. Plug in SugarPixel
SugarPixel must synchronize its internal clock to ensure CGM readings are downloaded with the correct timestamps.
By default, SugarPixel uses public NTP servers. See **School / Work** IT Firewall Requirements above for details on the default configuration. If your network requires an internal or alternate time server, you can configure one using the steps below.
***
### **What You’ll Need**
* A **micro SD card (16 GB or smaller)**
***
### **Setup**
1. Create a text file on the SD card named config.txt
2. Add **one line** to the file: ntpserver=YourServer
1. Replace YourServer with an **IP address**, **fully qualified domain name**, or **hostname.local**
3. With SugarPixel **unplugged**, insert the SD card fully into the slot on the back of the device
4. Plug in power to start SugarPixel
***
### **Notes**
* If the custom time server is unavailable, SugarPixel will automatically fall back to the default public time servers.
* To revert to the default configuration, reboot SugarPixel **without the SD card inserted**.