diff --git a/README.md b/README.md index 8d593d8..fb7bcd7 100644 --- a/README.md +++ b/README.md @@ -16,6 +16,20 @@ MAX98357A I2S 3W DAC Class D Amplifier Module ![](images/amp.png) + +SD / MODE + +This pin is used for shutdown mode but is also used for setting which channel is output. It's a little confusing but essentially: + + If SD is connected to ground directly (voltage is under 0.16V) then the amp is shut down + If the voltage on SD is between 0.16V and 0.77V then the output is (Left + Right)/2, that is the stereo average. + If the voltage on SD is between 0.77V and 1.4V then the output is just the Right channel + If the voltage on SD is higher than 1.4V then the output is the Left channel. + +This is compounded by an internal 100K pulldown resistor on SD so you need to use a pullup resistor on SD to balance out the 100K internal pulldown. + +For the breakout board, there's a 1Mohm resistor from SD to Vin which, when powering from 5V will give you the 'stereo average' output. If you want left or right channel only, or if you are powering from non-5V power, you may need to experiment with different resistors to get the desired voltage on SD + ``` 26 -> DIN 27 -> BCLK diff --git a/schema/hannabox/Amplifier_Audio_modified.kicad_sym b/schema/hannabox/Amplifier_Audio_modified.kicad_sym new file mode 100644 index 0000000..18c9354 --- /dev/null +++ b/schema/hannabox/Amplifier_Audio_modified.kicad_sym @@ -0,0 +1,8637 @@ +(kicad_symbol_lib (version 20201005) (generator kicad_symbol_editor) + (symbol "Amplifier_Audio:IR4301" (in_bom yes) (on_board yes) + (property "Reference" "U" (id 0) (at -7.62 20.955 0) + (effects (font (size 1.27 1.27)) (justify left)) + ) + (property "Value" "IR4301" (id 1) (at -7.62 19.05 0) + (effects (font (size 1.27 1.27)) (justify left)) + ) + (property "Footprint" "Package_DFN_QFN:Infineon_PQFN-22-15-4EP_6x5mm_P0.65mm" (id 2) (at 0 0 0) + (effects (font (size 1.27 1.27) italic) hide) + ) + (property "Datasheet" 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(number "10" (effects (font (size 1.016 1.016)))) + ) + (pin power_in line (at 0 -15.24 90) (length 5.08) + (name "GND" (effects (font (size 1.016 1.016)))) + (number "11" (effects (font (size 1.016 1.016)))) + ) + (pin input clock (at -15.24 -2.54 0) (length 5.08) + (name "LRCLK" (effects (font (size 1.016 1.016)))) + (number "14" (effects (font (size 1.016 1.016)))) + ) + (pin power_in line (at 0 -15.24 90) (length 5.08) + (name "GND" (effects (font (size 1.016 1.016)))) + (number "15" (effects (font (size 1.016 1.016)))) + ) + (pin input clock (at -15.24 5.08 0) (length 5.08) + (name "BCLK" (effects (font (size 1.016 1.016)))) + (number "16" (effects (font (size 1.016 1.016)))) + ) + (pin power_in line (at 15.24 -5.08 180) (length 5.08) + (name "EP" (effects (font (size 1.016 1.016)))) + (number "17" (effects (font (size 1.016 1.016)))) + ) + (pin input line (at -15.24 0 0) (length 5.08) + (name "GAIN" (effects (font (size 1.016 1.016)))) + (number "2" (effects (font (size 1.016 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b/schema/hannabox/hannabox.kicad_pro @@ -232,7 +232,7 @@ "no_connect_dangling": "warning", "pin_not_connected": "error", "pin_not_driven": "error", - "pin_to_pin": "warning", + "pin_to_pin": "error", "power_pin_not_driven": "error", "similar_labels": "warning", "simulation_model_issue": "ignore", diff --git a/schema/hannabox/hannabox.kicad_sch b/schema/hannabox/hannabox.kicad_sch index fec78c2..e7cc5e0 100644 --- a/schema/hannabox/hannabox.kicad_sch +++ b/schema/hannabox/hannabox.kicad_sch @@ -5,6 +5,81 @@ (paper "A4") (lib_symbols + (symbol "Amplifier_Audio_modified:MAX98357" (pin_names (offset 1.016)) (in_bom yes) (on_board yes) + (property "Reference" "U" (at 1.27 13.97 0) + (effects (font (size 1.27 1.27)) (justify left bottom)) + ) + (property "Value" "MAX98357" (at 1.27 11.43 0) + (effects (font (size 1.27 1.27)) (justify left bottom)) + ) + (property "Footprint" "Package_DFN_QFN:TQFN-16-1EP_3x3mm_P0.5mm_EP1.23x1.23mm_ThermalVias" (at -39.37 0 0) + (effects (font (size 1.27 1.27)) (justify left bottom) hide) + ) + (property "Datasheet" "https://datasheets.maximintegrated.com/en/ds/MAX98357A-MAX98357B.pdf" (at -39.37 0 0) + (effects (font (size 1.27 1.27)) (justify left bottom) hide) + ) + (property "ki_description" "PCM Class D Amplifier" (at 0 0 0) + (effects (font (size 1.27 1.27)) hide) + ) + (symbol "MAX98357_0_0" + (rectangle (start -10.16 10.16) (end 10.16 -10.16) + (stroke (width 0.4064) (type default)) + (fill (type background)) + ) + (pin input line (at -15.24 2.54 0) (length 5.08) + (name "DIN" (effects (font (size 1.016 1.016)))) + (number "1" (effects (font (size 1.016 1.016)))) + ) + (pin output line (at 15.24 5.08 180) (length 5.08) + (name "OUT-" (effects (font (size 1.016 1.016)))) + (number "10" (effects (font (size 1.016 1.016)))) + ) + (pin power_in line (at 0 -15.24 90) (length 5.08) + (name "GND" (effects (font (size 1.016 1.016)))) + (number "11" (effects (font (size 1.016 1.016)))) + ) + (pin input clock (at -15.24 -2.54 0) (length 5.08) + (name "LRCLK" (effects (font (size 1.016 1.016)))) + (number "14" (effects (font (size 1.016 1.016)))) + ) + (pin power_in line (at 0 -15.24 90) (length 5.08) + (name "GND" (effects (font (size 1.016 1.016)))) + (number "15" (effects (font (size 1.016 1.016)))) + ) + (pin input clock (at -15.24 5.08 0) (length 5.08) + (name "BCLK" (effects (font (size 1.016 1.016)))) + (number "16" (effects (font (size 1.016 1.016)))) + ) + (pin power_in line (at 15.24 -5.08 180) (length 5.08) + (name "EP" (effects (font (size 1.016 1.016)))) + (number "17" (effects (font (size 1.016 1.016)))) + ) + (pin input line (at -15.24 0 0) (length 5.08) + (name "GAIN" (effects (font (size 1.016 1.016)))) + (number "2" (effects (font (size 1.016 1.016)))) + ) + (pin power_in line (at 0 -15.24 90) (length 5.08) + (name "GND" (effects (font (size 1.016 1.016)))) + (number "3" (effects (font (size 1.016 1.016)))) + ) + (pin input line (at -15.24 -5.08 0) (length 5.08) + (name "~{SHDN}" (effects (font (size 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(font (size 1.27 1.27))) ) - (property "Value" "Conn_01x03_Male" (at 0 -5.08 0) + (property "Value" "Conn_01x03_Pin" (at 0 -5.08 0) (effects (font (size 1.27 1.27))) ) (property "Footprint" "" (at 0 0 0) @@ -75,16 +150,19 @@ (property "Datasheet" "~" (at 0 0 0) (effects (font (size 1.27 1.27)) hide) ) + (property "ki_locked" "" (at 0 0 0) + (effects (font (size 1.27 1.27))) + ) (property "ki_keywords" "connector" (at 0 0 0) (effects (font (size 1.27 1.27)) hide) ) - (property "ki_description" "Generic connector, single row, 01x03, script generated (kicad-library-utils/schlib/autogen/connector/)" (at 0 0 0) + (property "ki_description" "Generic connector, single row, 01x03, script generated" (at 0 0 0) (effects (font (size 1.27 1.27)) hide) ) (property "ki_fp_filters" "Connector*:*_1x??_*" (at 0 0 0) (effects (font (size 1.27 1.27)) hide) ) - (symbol "Conn_01x03_Male_1_1" + (symbol "Conn_01x03_Pin_1_1" (polyline (pts (xy 1.27 -2.54) @@ -324,6 +402,206 @@ ) ) ) + (symbol "GND_2" (power) (pin_names (offset 0)) (in_bom yes) (on_board yes) + (property "Reference" "#PWR" (at 0 -6.35 0) + (effects (font (size 1.27 1.27)) hide) + ) + (property "Value" "GND_2" (at 0 -3.81 0) + (effects (font (size 1.27 1.27))) + ) + (property "Footprint" "" (at 0 0 0) + (effects (font (size 1.27 1.27)) hide) + ) + (property "Datasheet" "" (at 0 0 0) + (effects (font (size 1.27 1.27)) hide) + ) + (property "ki_keywords" "global power" (at 0 0 0) + (effects (font (size 1.27 1.27)) hide) + ) + (property "ki_description" "Power symbol creates a global label with name \"GND\" , ground" (at 0 0 0) + (effects (font (size 1.27 1.27)) hide) + ) + (symbol "GND_2_0_1" + (polyline + (pts + (xy 0 0) + (xy 0 -1.27) + (xy 1.27 -1.27) + (xy 0 -2.54) + (xy -1.27 -1.27) + (xy 0 -1.27) + ) + (stroke (width 0) (type default)) + (fill (type none)) + ) + ) + (symbol "GND_2_1_1" + (pin power_in line (at 0 0 270) (length 0) hide + (name "GND" (effects (font (size 1.27 1.27)))) + (number "1" (effects (font (size 1.27 1.27)))) + ) + ) + ) + (symbol "GND_3" (power) (pin_names (offset 0)) (in_bom yes) (on_board yes) + (property "Reference" "#PWR" (at 0 -6.35 0) + (effects (font (size 1.27 1.27)) hide) + ) + (property "Value" "GND_3" (at 0 -3.81 0) + (effects (font (size 1.27 1.27))) + ) + (property "Footprint" "" (at 0 0 0) + (effects (font (size 1.27 1.27)) hide) + ) + (property "Datasheet" "" (at 0 0 0) + (effects (font (size 1.27 1.27)) hide) + ) + (property "ki_keywords" "global power" (at 0 0 0) + (effects (font (size 1.27 1.27)) hide) + ) + (property "ki_description" "Power symbol creates a global label with name \"GND\" , ground" (at 0 0 0) + (effects (font (size 1.27 1.27)) hide) + ) + (symbol "GND_3_0_1" + (polyline + (pts + (xy 0 0) + (xy 0 -1.27) + (xy 1.27 -1.27) + (xy 0 -2.54) + (xy -1.27 -1.27) + (xy 0 -1.27) + ) + (stroke (width 0) (type default)) + (fill (type none)) + ) + ) + (symbol "GND_3_1_1" + (pin power_in line (at 0 0 270) (length 0) hide + (name "GND" (effects (font (size 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(length 0) hide + (name "GND" (effects (font (size 1.27 1.27)))) + (number "1" (effects (font (size 1.27 1.27)))) + ) + ) + ) + (symbol "GND_5" (power) (pin_names (offset 0)) (in_bom yes) (on_board yes) + (property "Reference" "#PWR" (at 0 -6.35 0) + (effects (font (size 1.27 1.27)) hide) + ) + (property "Value" "GND_5" (at 0 -3.81 0) + (effects (font (size 1.27 1.27))) + ) + (property "Footprint" "" (at 0 0 0) + (effects (font (size 1.27 1.27)) hide) + ) + (property "Datasheet" "" (at 0 0 0) + (effects (font (size 1.27 1.27)) hide) + ) + (property "ki_keywords" "global power" (at 0 0 0) + (effects (font (size 1.27 1.27)) hide) + ) + (property "ki_description" "Power symbol creates a global label with name \"GND\" , ground" (at 0 0 0) + (effects (font (size 1.27 1.27)) hide) + ) + (symbol "GND_5_0_1" + (polyline + (pts + (xy 0 0) + (xy 0 -1.27) + (xy 1.27 -1.27) + (xy 0 -2.54) + (xy -1.27 -1.27) + (xy 0 -1.27) + ) + (stroke (width 0) (type default)) + (fill (type none)) + ) + ) + (symbol "GND_5_1_1" + (pin power_in line (at 0 0 270) (length 0) hide + (name "GND" (effects (font (size 1.27 1.27)))) + (number "1" (effects (font (size 1.27 1.27)))) + ) + ) + ) + (symbol "GND_6" (power) (pin_names (offset 0)) (in_bom yes) (on_board yes) + (property "Reference" "#PWR" (at 0 -6.35 0) + (effects (font (size 1.27 1.27)) hide) + ) + (property "Value" "GND_6" (at 0 -3.81 0) + (effects (font (size 1.27 1.27))) + ) + (property "Footprint" "" (at 0 0 0) + (effects (font (size 1.27 1.27)) hide) + ) + (property "Datasheet" "" (at 0 0 0) + (effects (font (size 1.27 1.27)) hide) + ) + (property "ki_keywords" "global power" (at 0 0 0) + (effects (font (size 1.27 1.27)) hide) + ) + (property "ki_description" "Power symbol creates a global label with name \"GND\" , ground" (at 0 0 0) + (effects (font (size 1.27 1.27)) hide) + ) + (symbol "GND_6_0_1" + (polyline + (pts + (xy 0 0) + (xy 0 -1.27) + (xy 1.27 -1.27) + (xy 0 -2.54) + (xy -1.27 -1.27) + (xy 0 -1.27) + ) + (stroke (width 0) (type default)) + (fill (type none)) + ) + ) + (symbol "GND_6_1_1" + (pin power_in line (at 0 0 270) (length 0) hide + (name "GND" (effects (font (size 1.27 1.27)))) + (number "1" (effects (font (size 1.27 1.27)))) + ) + ) + ) (symbol "RF_Module:ESP32-WROOM-32" (in_bom yes) (on_board yes) (property "Reference" "U" (at -12.7 34.29 0) (effects (font (size 1.27 1.27)) (justify left)) @@ -812,8 +1090,11 @@ (junction (at 72.39 53.34) (diameter 0) (color 0 0 0 0) (uuid 252869bd-d90c-4a8f-9a00-e562e35b7dbc) ) - (junction (at 196.85 93.98) (diameter 0) (color 0 0 0 0) - (uuid 50f6922f-35db-4849-af22-478488a80740) + (junction (at 231.14 50.8) (diameter 0) (color 0 0 0 0) + (uuid 3f989b27-91b6-490b-b7bd-433561da46a1) + ) + (junction (at 254 58.42) (diameter 0) (color 0 0 0 0) + (uuid 6ff6a278-167d-4fb0-9c46-cc1bdb7e9782) ) (junction (at 146.05 50.8) (diameter 0) (color 0 0 0 0) (uuid 776b017b-f2fe-4a9a-ae61-f10450bd72ef) @@ -821,6 +1102,9 @@ (junction (at 109.22 50.8) (diameter 0) (color 0 0 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"Serial") (unit 1) - ) - ) - ) + (label "Vcc" (at 231.14 49.53 0) (fields_autoplaced) + (effects (font (size 1.27 1.27)) (justify left bottom)) + (uuid 0f4241ae-ea56-4baf-8899-a0f4a2bbc2bf) + ) + (label "Vcc" (at 109.22 45.72 0) (fields_autoplaced) + (effects (font (size 1.27 1.27)) (justify left bottom)) + (uuid efef9031-b409-40e0-9519-95aa3a345cbf) ) (symbol (lib_id "power:+BATT") (at 72.39 50.8 0) (unit 1) @@ -1175,6 +1500,31 @@ ) ) + (symbol (lib_name "GND_4") (lib_id "power:GND") (at 231.14 92.71 0) (unit 1) + (in_bom yes) (on_board yes) (dnp no) (fields_autoplaced) + (uuid 32fc2d26-f967-4ef1-bc64-4d709ce5f872) + (property "Reference" "#PWR09" (at 231.14 99.06 0) + (effects (font (size 1.27 1.27)) hide) + ) + (property "Value" "GND" (at 231.14 97.79 0) + (effects (font (size 1.27 1.27))) + ) + (property "Footprint" "" (at 231.14 92.71 0) + (effects (font (size 1.27 1.27)) hide) + ) + (property "Datasheet" "" (at 231.14 92.71 0) + (effects (font (size 1.27 1.27)) hide) + ) + (pin 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no) (fields_autoplaced) + (uuid 5f2d519d-1b71-4daf-ad4c-0ce9a463d1b9) + (property "Reference" "#PWR06" (at 196.85 73.66 0) + (effects (font (size 1.27 1.27)) hide) + ) + (property "Value" "GND" (at 196.85 72.39 0) + (effects (font (size 1.27 1.27))) + ) + (property "Footprint" "" (at 196.85 67.31 0) + (effects (font (size 1.27 1.27)) hide) + ) + (property "Datasheet" "" (at 196.85 67.31 0) + (effects (font (size 1.27 1.27)) hide) + ) + (pin "1" (uuid 835ca49c-48c9-4e7d-86b9-905a09053703)) + (instances + (project "hannabox" + (path "/655e5440-8930-4e5c-9f0c-88fde193e5ea" + (reference "#PWR06") (unit 1) + ) + ) + ) + ) + (symbol (lib_id "RF_Module:ESP32-WROOM-32") (at 146.05 97.79 0) (unit 1) (in_bom yes) (on_board yes) (dnp no) (fields_autoplaced) (uuid 658bac8f-9fd6-4594-a161-64ece0e32213) @@ -1315,6 +1767,31 @@ ) ) + (symbol (lib_name "GND_3") (lib_id "power:GND") (at 181.61 81.28 0) (unit 1) + (in_bom yes) (on_board yes) (dnp no) (fields_autoplaced) + (uuid 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