diff --git a/braille-display/client.ts b/braille-display/client.ts
new file mode 100644
index 000000000..5935285e4
--- /dev/null
+++ b/braille-display/client.ts
@@ -0,0 +1,139 @@
+namespace modules {
+    /**
+     * Converts a string from unicode Braille or Braille ASCII to unicode braille
+     */
+    export function brailify(s: string) {
+        if (!s) return ""
+        // space char -> unicode character
+        const braille_ascii =
+            "⠀⠮⠐⠼⠫⠩⠯⠄⠷⠾⠡⠬⠠⠤⠨⠌⠴⠂⠆⠒⠲⠢⠖⠶⠦⠔⠱⠰⠣⠿⠜⠹⠈⠁⠃⠉⠙⠑⠋⠛⠓⠊⠚⠅⠇⠍⠝⠕⠏⠟⠗⠎⠞⠥⠧⠺⠭⠽⠵⠪⠳⠻⠘⠸"
+        const a0 = " ".charCodeAt(0)
+        const an = braille_ascii.length
+
+        let r = ""
+        const su = s.toUpperCase()
+        for (let i = 0; i < su.length; ++i) {
+            const c = su.charCodeAt(i)
+            const ai = c - a0
+            if (c >= 0x2800 && c <= 0x28ff) r += String.fromCharCode(c)
+            else if (ai < an) r += braille_ascii.charAt(ai)
+            else r += ""
+        }
+        return r
+    }
+
+    /**
+     * A Braille pattern display module. This module display [unicode braille patterns](https://www.unicode.org/charts/PDF/U2800.pdf), country specific encoding have to be implemented by the clients.
+     **/
+    //% fixedInstances blockGap=8
+    export class BrailleDisplayClient extends jacdac.Client {
+        private readonly _enabled: jacdac.RegisterClient<[boolean]>
+        private readonly _patterns: jacdac.RegisterClient<[string]>
+        private readonly _length: jacdac.RegisterClient<[number]>
+
+        constructor(role: string) {
+            super(jacdac.SRV_BRAILLE_DISPLAY, role)
+
+            this._enabled = this.addRegister<[boolean]>(
+                jacdac.BrailleDisplayReg.Enabled,
+                jacdac.BrailleDisplayRegPack.Enabled
+            )
+            this._patterns = this.addRegister<[string]>(
+                jacdac.BrailleDisplayReg.Patterns,
+                jacdac.BrailleDisplayRegPack.Patterns
+            )
+            this._length = this.addRegister<[number]>(
+                jacdac.BrailleDisplayReg.Length,
+                jacdac.BrailleDisplayRegPack.Length,
+                jacdac.RegisterClientFlags.Const
+            )
+        }
+
+        /**
+         * Sets the patterns displayed as Braille ASCII or Unicode Braille characters.
+         * Enables the display if needed.
+         * @param text Braille ASCII or Unicode Braille characters to display
+         */
+        //% blockId=jacdac_brailledisplay_set_patterns_text block="set %brailledisplay text to %text"
+        //% group="Display"
+        //% weight=100
+        setText(text: string) {
+            const length = this.length()
+            let brailled = brailify(text)
+            if (length > 0) brailled = brailled.slice(0, length)
+            this.setPatterns(brailled)
+            if (text) this.setEnabled(true)
+        }
+
+        /**
+         * Determines if the braille display is active.
+         */
+        //% callInDebugger
+        //% group="Display"
+        //% block="%brailledisplay enabled"
+        //% blockId=jacdac_brailledisplay_enabled___get
+        //% weight=99
+        enabled(): boolean {
+            this.start()
+            const values = this._enabled.pauseUntilValues() as any[]
+            return !!values[0]
+        }
+
+        /**
+         * Determines if the braille display is active.
+         */
+        //% group="Display"
+        //% blockId=jacdac_brailledisplay_enabled___set
+        //% block="set %brailledisplay %value=toggleOnOff"
+        //% weight=98
+        setEnabled(value: boolean) {
+            this.start()
+            const values = this._enabled.values as any[]
+            values[0] = value ? 1 : 0
+            this._enabled.values = values as [boolean]
+        }
+
+        /**
+         * Braille patterns to show. Must be unicode characters between `0x2800` and `0x28ff`.
+         */
+        //% callInDebugger
+        //% group="Display"
+        //% weight=98
+        patterns(): string {
+            this.start()
+            const values = this._patterns.pauseUntilValues() as any[]
+            return values[0]
+        }
+
+        /**
+         * Braille patterns to show. Must be unicode characters between `0x2800` and `0x28ff`.
+         */
+        //% group="Display"
+        //% weight=97
+        setPatterns(value: string) {
+            this.start()
+            this.setEnabled(true)
+            const values = this._patterns.values as any[]
+            values[0] = value
+            this._patterns.values = values as [string]
+        }
+
+        /**
+         * Gets the number of patterns that can be displayed.
+         */
+        //% callInDebugger
+        //% group="Display"
+        //% weight=96
+        length(): number {
+            this.start()
+            const values = this._length.pauseUntilValues() as any[]
+            return values[0]
+        }
+    }
+
+    //% fixedInstance whenUsed weight=1 block="braille display1"
+    export const brailleDisplay1 = new BrailleDisplayClient("braille Display1")
+
+    //% fixedInstance whenUsed weight=2 block="braille display2"
+    export const brailleDisplay2 = new BrailleDisplayClient("braille Display2")
+}
diff --git a/braille-display/pxt.g.json b/braille-display/pxt.json
similarity index 96%
rename from braille-display/pxt.g.json
rename to braille-display/pxt.json
index 93e73a712..690050012 100644
--- a/braille-display/pxt.g.json
+++ b/braille-display/pxt.json
@@ -4,7 +4,7 @@
     "description": "A Braille pattern display module. This module display [unicode braille patterns](https://www.unicode.org/charts/PDF/U2800.pdf), country specific encoding have to be implemented by the clients.",
     "files": [
         "constants.ts",
-        "client.g.ts"
+        "client.ts"
     ],
     "testFiles": [
         "test.ts"
diff --git a/braille-display/test.ts b/braille-display/test.ts
new file mode 100644
index 000000000..58ec191a1
--- /dev/null
+++ b/braille-display/test.ts
@@ -0,0 +1,6 @@
+let i = 0
+forever(() => {
+    modules.brailleDisplay1.setText(i + "")
+    pause(1000)
+    i++
+})
diff --git a/sound-level/client.g.ts b/sound-level/client.g.ts
index 8da8c5f27..0c837117b 100644
--- a/sound-level/client.g.ts
+++ b/sound-level/client.g.ts
@@ -5,6 +5,8 @@ namespace modules {
     //% fixedInstances blockGap=8
     export class SoundLevelClient extends jacdac.SimpleSensorClient {
         private readonly _enabled: jacdac.RegisterClient<[boolean]>
+        private readonly _loudThreshold: jacdac.RegisterClient<[number]>
+        private readonly _quietThreshold: jacdac.RegisterClient<[number]>
 
         constructor(role: string) {
             super(
@@ -17,6 +19,14 @@ namespace modules {
                 jacdac.SoundLevelReg.Enabled,
                 jacdac.SoundLevelRegPack.Enabled
             )
+            this._loudThreshold = this.addRegister<[number]>(
+                jacdac.SoundLevelReg.LoudThreshold,
+                jacdac.SoundLevelRegPack.LoudThreshold
+            )
+            this._quietThreshold = this.addRegister<[number]>(
+                jacdac.SoundLevelReg.QuietThreshold,
+                jacdac.SoundLevelRegPack.QuietThreshold
+            )
         }
 
         /**
@@ -59,19 +69,101 @@ namespace modules {
             this._enabled.values = values as [boolean]
         }
 
+        /**
+         * Set level at which the `loud` event is generated.
+         */
+        //% callInDebugger
+        //% group="Sound"
+        //% weight=97
+        loudThreshold(): number {
+            this.start()
+            const values = this._loudThreshold.pauseUntilValues() as any[]
+            return values[0] * 100
+        }
+
+        /**
+         * Set level at which the `loud` event is generated.
+         */
+        //% group="Sound"
+        //% weight=96
+        //% value.min=0
+        //% value.max=100
+        //% value.defl=100
+        setLoudThreshold(value: number) {
+            this.start()
+            const values = this._loudThreshold.values as any[]
+            values[0] = value / 100
+            this._loudThreshold.values = values as [number]
+        }
+
+        /**
+         * Set level at which the `quiet` event is generated.
+         */
+        //% callInDebugger
+        //% group="Sound"
+        //% weight=95
+        quietThreshold(): number {
+            this.start()
+            const values = this._quietThreshold.pauseUntilValues() as any[]
+            return values[0] * 100
+        }
+
+        /**
+         * Set level at which the `quiet` event is generated.
+         */
+        //% group="Sound"
+        //% weight=94
+        //% value.min=0
+        //% value.max=100
+        //% value.defl=100
+        setQuietThreshold(value: number) {
+            this.start()
+            const values = this._quietThreshold.values as any[]
+            values[0] = value / 100
+            this._quietThreshold.values = values as [number]
+        }
+
         /**
          * Run code when the sound level changes by the given threshold value.
          */
         //% group="Sound"
         //% blockId=jacdac_soundlevel_on_sound_level_change
         //% block="on %soundlevel sound level changed by %threshold (\\%)"
-        //% weight=97
+        //% weight=93
         //% threshold.min=0
         //% threshold.max=100
         //% threshold.defl=5
         onSoundLevelChangedBy(threshold: number, handler: () => void): void {
             this.onReadingChangedBy(threshold / 100, handler)
         }
+
+        /**
+         * Register code to run when an event is raised
+         */
+        //% group="Sound"
+        //% blockId=jacdac_on_soundlevel_event
+        //% block="on %soundlevel %event"
+        //% weight=92
+        onEvent(ev: jacdac.SoundLevelEvent, handler: () => void): void {
+            this.registerEvent(ev, handler)
+        }
+
+        /**
+         * Generated when a loud sound is detected.
+         */
+        //% group="Sound"
+        //% weight=91
+        onLoud(handler: () => void): void {
+            this.registerEvent(jacdac.SoundLevelEvent.Loud, handler)
+        }
+        /**
+         * Generated low level of sound is detected.
+         */
+        //% group="Sound"
+        //% weight=90
+        onQuiet(handler: () => void): void {
+            this.registerEvent(jacdac.SoundLevelEvent.Quiet, handler)
+        }
     }
 
     //% fixedInstance whenUsed weight=1 block="sound level1"
diff --git a/sound-level/constants.ts b/sound-level/constants.ts
index bf9aa4e41..0fffbfebc 100644
--- a/sound-level/constants.ts
+++ b/sound-level/constants.ts
@@ -19,6 +19,24 @@ namespace jacdac {
          * ```
          */
         Enabled = 0x1,
+
+        /**
+         * Read-write ratio u0.16 (uint16_t). Set level at which the `loud` event is generated.
+         *
+         * ```
+         * const [loudThreshold] = jdunpack<[number]>(buf, "u0.16")
+         * ```
+         */
+        LoudThreshold = 0x6,
+
+        /**
+         * Read-write ratio u0.16 (uint16_t). Set level at which the `quiet` event is generated.
+         *
+         * ```
+         * const [quietThreshold] = jdunpack<[number]>(buf, "u0.16")
+         * ```
+         */
+        QuietThreshold = 0x5,
     }
 
     export namespace SoundLevelRegPack {
@@ -31,5 +49,29 @@ namespace jacdac {
          * Pack format for 'enabled' register data.
          */
         export const Enabled = "u8"
+
+        /**
+         * Pack format for 'loud_threshold' register data.
+         */
+        export const LoudThreshold = "u0.16"
+
+        /**
+         * Pack format for 'quiet_threshold' register data.
+         */
+        export const QuietThreshold = "u0.16"
+    }
+
+    export const enum SoundLevelEvent {
+        /**
+         * Generated when a loud sound is detected.
+         */
+        //% block="loud"
+        Loud = 0x1,
+
+        /**
+         * Generated low level of sound is detected.
+         */
+        //% block="quiet"
+        Quiet = 0x2,
     }
 }