Muggle

Muggle is a macOS menu bar app for Bluetooth smart mugs. Unlike OEM apps, your identity and activities are not collected.

Test Flight | Supported Mugs | Repo Overview | To-Dos

At Target Temp	Heating/Cooling

Supported Mugs

• Ember Cup 6 oz (tested: CM21S)
• Ember Mug 2 14 oz (tested: CM19P)
• Ember Tumbler 16 oz (tested: CM21XL)

Caution

Check the max target temperature of your mug in Ember's app. Muggle's max is 63℃ (145℉). If that doesn't match Ember's app, I'd appreciate an email about it. Don't set a higher temp (as I lack your device and have not tested whether Ember wrote a safeguard into its firmware).

Repo overview

Various brands of BLE mugs are abstracted behind a BluetoothMug and BluetoothPeripheral protocol to keep the view layer agnostic to specific models. Nordic's CoreBluetoothMock library enables stable unit testing on CI.

Package\Target	Purpose
MuggleMac	SwiftUI MenuBarExtra
MuggleCore\MuggleBluetooth	CBCentralManager
MuggleCore\EmberBluetooth	Ember CBPeripheral(s) + Nordic mocks
MuggleCore\VFZOBluetooth	VFZO M1 CBPeripheral + Nordic mocks
MuggleCore\Common	BluetoothMug/Peripheral protocol + Nordic CoreBluetoothMock shim
MuggleCore\CommonUI	Cross-platform SwiftUI

Tasks

V1.0.2

• Icon: brighten/de-cheese
• Verify behavior: Travel mug (HasContentsCharacteristic, Service)
• Verify behavior: Tumbler
• Verify behavior: Cup
• fix: When keyboard navigation enabled, the Settings button appears with a focus ring

V1.1

• Experiment: predict cooldown time, battery life, charge time
• VFZO M1 mug support

Features

• Experiment: eliminate Ember's low volume overheating
• Experiment: reduce Ember's' battery consumption during cooldown phase
• More non-Ember products
• visionOS: as central
• macOS/visionOS: "remote" central
• iPhone/iPad + Live Activity / Widget
• Improve onboarding

Minor/Fixes

• Scanner efficiency: Reduce eagerness to save a little laptop battery / turn on manually after initial session
• Forget a mug: cache forgotten IDs to prevent mugs in discovery mode from automatically reconnecting if scanning
• Multi-muggers: select mug for MenuBar or allow multiple in MenuBar
• Expand mock and live test suite