From 5a1ddae42b1446be58902d1d31d541d63a92d4bc Mon Sep 17 00:00:00 2001
From: Benjamin Koch <bbbsnowball@gmail.com>
Date: Sat, 15 Apr 2023 06:12:34 +0200
Subject: [PATCH] fixup: power rating of resistor was too low
---
Notizen.md | 10 +-
c3pb-heizung/c3pb-heizung.kicad_pcb | 142 ++++++++++++++--------------
c3pb-heizung/c3pb-heizung.kicad_sch | 8 +-
c3pb-heizung/heaters.kicad_sch | 14 ++-
4 files changed, 95 insertions(+), 79 deletions(-)
diff --git a/Notizen.md b/Notizen.md
index 4211306..e66bc07 100644
--- a/Notizen.md
+++ b/Notizen.md
@@ -215,13 +215,21 @@
- Dann nehmen wir den.
- Fun fact: Das untere Ende sind VSS-0.3V, d.h. mit dem hätte man sogar negative Ströme messen können.
- Ich nehme mal Faktor 60, d.h. funktioniert bis 500 mA. Wenn man mehr will, muss man halt den Shunt tauschen.
+ - Wie viel Watt kann ich durch den Widerstand zum Strom messen schicken?
+ - Den 0R1 hatte ich schon größer gemacht, aber der ist harmlos wegen der niedrigen Spannung und bei Kurzschluss kann ich nicht viel machen (sofern die
+ Sicherung vor den 24V den nicht rechtzeitig abfängt).
+ - Die 2.4 kOhm für die 10 mA Messstrom sind aktuell ein 0402WGF2401TCE. Das WG heißt 1/16 Watt. Es fallen aber 240 mW ab. Upps.
+ - In dem Package wäre ok: 24/(1/16)×24 = 9.2 kOhm
+ - Das wären 2 mA. Das wären 16 counts am ADC. Nicht so toll. Aber selbst die 0805 haben nur 1/8 W.
+ - Dann wird's wohl ein Extended Part mit 1206.
+ - Oder auch nicht: Es gibt Basic Parts mit 2k und 4.7k. Wir machen das nicht dauerhaft an und der Motor hat auch noch 100 bis 500 Ohm. Ab 2.3 kOhm passt
+ die Power und wir machen das ja immer nur kurz an. Ich denke, 2k sind ok.
TODO und weitere Gedanken:
- Anschlussplan wird nicht auf die Platine passen, aber kann man in den Deckel kleben.
-- RC-Filter sinnvoll auslegen
- Testpunkte
- OLED als Board kaufen oder irgendwie anders auf eigene Platine?
diff --git a/c3pb-heizung/c3pb-heizung.kicad_pcb b/c3pb-heizung/c3pb-heizung.kicad_pcb
index 6712806..0199f6a 100644
--- a/c3pb-heizung/c3pb-heizung.kicad_pcb
+++ b/c3pb-heizung/c3pb-heizung.kicad_pcb
@@ -242,42 +242,43 @@
)
)
- (footprint "Resistor_SMD:R_0402_1005Metric" (layer "F.Cu")
+ (footprint "Resistor_SMD:R_1206_3216Metric" (layer "F.Cu")
(tedit 5F68FEEE) (tstamp 06ff7a6f-2700-4a1a-8dda-751e1b38ecf7)
- (at 151.892 108.204 90)
- (descr "Resistor SMD 0402 (1005 Metric), square (rectangular) end terminal, IPC_7351 nominal, (Body size source: IPC-SM-782 page 72, https://www.pcb-3d.com/wordpress/wp-content/uploads/ipc-sm-782a_amendment_1_and_2.pdf), generated with kicad-footprint-generator")
+ (at 152.654 106.934 -90)
+ (descr "Resistor SMD 1206 (3216 Metric), square (rectangular) end terminal, IPC_7351 nominal, (Body size source: IPC-SM-782 page 72, https://www.pcb-3d.com/wordpress/wp-content/uploads/ipc-sm-782a_amendment_1_and_2.pdf), generated with kicad-footprint-generator")
(tags "resistor")
+ (property "LCSC" "C17944")
(property "Sheetfile" "heaters.kicad_sch")
(property "Sheetname" "Heaters")
(path "/54f5266d-1777-4e02-bd31-ebf852aa6849/e88e747d-1260-42e6-b44e-8bc38dac7649")
(attr smd)
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(effects (font (size 1 1) (thickness 0.15)))
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(effects (font (size 1 1) (thickness 0.15)))
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(fp_text user "${REFERENCE}" (at 0 0 90) (layer "F.Fab")
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- (model "${KICAD6_3DMODEL_DIR}/Resistor_SMD.3dshapes/R_0402_1005Metric.wrl"
+ (effects (font (size 0.8 0.8) (thickness 0.12)))
+ (tstamp 4eaa1167-9877-4234-84a0-8b00751ccf95)
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+ (fp_line (start 1.6 -0.8) (end 1.6 0.8) (layer "F.Fab") (width 0.1) (tstamp ff7acc5e-96e6-4b15-8d1a-ec6edcba0b66))
+ (pad "1" smd roundrect (at -1.4625 0 270) (size 1.125 1.75) (layers "F.Cu" "F.Paste" "F.Mask") (roundrect_rratio 0.222222)
+ (net 22 "/HEATER1") (pintype "passive") (tstamp bc336ad0-be76-425f-a867-3fd93cd0d47d))
+ (pad "2" smd roundrect (at 1.4625 0 270) (size 1.125 1.75) (layers "F.Cu" "F.Paste" "F.Mask") (roundrect_rratio 0.222222)
+ (net 108 "Net-(Q5-Pad3)") (pintype "passive") (tstamp 3f27d835-54e7-4344-8ec0-035fdc5688e6))
+ (model "${KICAD6_3DMODEL_DIR}/Resistor_SMD.3dshapes/R_1206_3216Metric.wrl"
(offset (xyz 0 0 0))
(scale (xyz 1 1 1))
(rotate (xyz 0 0 0))
@@ -618,7 +619,7 @@
(footprint "Resistor_SMD:R_0603_1608Metric" (layer "F.Cu")
(tedit 5F68FEEE) (tstamp 1ad84c04-691e-496f-a7fb-28d6c137f6f0)
- (at 164.084 107.696 90)
+ (at 166.37 108.458 180)
(descr "Resistor SMD 0603 (1608 Metric), square (rectangular) end terminal, IPC_7351 nominal, (Body size source: IPC-SM-782 page 72, https://www.pcb-3d.com/wordpress/wp-content/uploads/ipc-sm-782a_amendment_1_and_2.pdf), generated with kicad-footprint-generator")
(tags "resistor")
(property "LCSC" "C2757915")
@@ -626,15 +627,15 @@
(property "Sheetname" "IO Protection")
(path "/2f59c195-b3d3-4fd3-a2ef-b308811ae6e7/0216c2d0-8922-4362-aa0f-0c83f0defdd1")
(attr smd)
- (fp_text reference "RV1" (at 0 -1.43 90) (layer "F.SilkS")
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(effects (font (size 1 1) (thickness 0.15)))
(tstamp 741e7712-afb2-462e-9faa-f20b28033d1a)
)
- (fp_text value "30V, SDV1608H300C100NPTF" (at 0 1.43 90) (layer "F.Fab")
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(effects (font (size 1 1) (thickness 0.15)))
(tstamp fb490945-3e18-4f74-a5d0-5fd164ce429c)
)
- (fp_text user "${REFERENCE}" (at 0 0 90) (layer "F.Fab")
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(tstamp 99850b3a-fa17-4d9a-a123-0c1207c7cf6b)
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- (pad "1" smd roundrect (at -0.825 0 90) (size 0.8 0.95) (layers "F.Cu" "F.Paste" "F.Mask") (roundrect_rratio 0.25)
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(net 80 "/IO Protection/24V_EXT") (pintype "passive") (tstamp 6b596c87-fe02-4dd0-9c81-6813d5ff8939))
- (pad "2" smd roundrect (at 0.825 0 90) (size 0.8 0.95) (layers "F.Cu" "F.Paste" "F.Mask") (roundrect_rratio 0.25)
+ (pad "2" smd roundrect (at 0.825 0 180) (size 0.8 0.95) (layers "F.Cu" "F.Paste" "F.Mask") (roundrect_rratio 0.25)
(net 10 "GNDPWR") (pintype "passive") (tstamp aa102de5-2eb8-40e8-ab7c-a3073f814595))
(model "${KICAD6_3DMODEL_DIR}/Resistor_SMD.3dshapes/R_0603_1608Metric.wrl"
(offset (xyz 0 0 0))
@@ -1272,42 +1273,43 @@
)
)
- (footprint "Resistor_SMD:R_0402_1005Metric" (layer "F.Cu")
+ (footprint "Resistor_SMD:R_1206_3216Metric" (layer "F.Cu")
(tedit 5F68FEEE) (tstamp 21815c17-672c-4766-8f5d-6a0837183ffd)
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+ (at 124.714 100.584 90)
+ (descr "Resistor SMD 1206 (3216 Metric), square (rectangular) end terminal, IPC_7351 nominal, (Body size source: IPC-SM-782 page 72, https://www.pcb-3d.com/wordpress/wp-content/uploads/ipc-sm-782a_amendment_1_and_2.pdf), generated with kicad-footprint-generator")
(tags "resistor")
+ (property "LCSC" "C17944")
(property "Sheetfile" "heaters.kicad_sch")
(property "Sheetname" "Heaters")
(path "/54f5266d-1777-4e02-bd31-ebf852aa6849/42515fb5-94d0-402e-8d2a-e9b2b878849e")
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- (model "${KICAD6_3DMODEL_DIR}/Resistor_SMD.3dshapes/R_0402_1005Metric.wrl"
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+ (net 23 "/HEATER2") (pintype "passive") (tstamp ea7520a0-89f5-45e9-aebc-56f64c917ca5))
+ (pad "2" smd roundrect (at 1.4625 0 90) (size 1.125 1.75) (layers "F.Cu" "F.Paste" "F.Mask") (roundrect_rratio 0.222222)
+ (net 109 "Net-(Q6-Pad3)") (pintype "passive") (tstamp 82a8272d-8d78-4811-bb77-3fa74c8dea71))
+ (model "${KICAD6_3DMODEL_DIR}/Resistor_SMD.3dshapes/R_1206_3216Metric.wrl"
(offset (xyz 0 0 0))
(scale (xyz 1 1 1))
(rotate (xyz 0 0 0))
@@ -2709,7 +2711,7 @@
(footprint "Diode_SMD:D_SMA" (layer "F.Cu")
(tedit 586432E5) (tstamp 5c270712-c215-4eb1-bee2-cd8ccf3a9b68)
- (at 152.654 96.52 90)
+ (at 152.654 96.139 90)
(descr "Diode SMA (DO-214AC)")
(tags "Diode SMA (DO-214AC)")
(property "LCSC" "C14996")
@@ -2886,7 +2888,7 @@
(footprint "Resistor_SMD:R_0603_1608Metric" (layer "F.Cu")
(tedit 5F68FEEE) (tstamp 63b0fe22-0eb2-4365-a616-1edf06f96a41)
- (at 164.084 104.648 -90)
+ (at 163.068 104.648)
(descr "Resistor SMD 0603 (1608 Metric), square (rectangular) end terminal, IPC_7351 nominal, (Body size source: IPC-SM-782 page 72, https://www.pcb-3d.com/wordpress/wp-content/uploads/ipc-sm-782a_amendment_1_and_2.pdf), generated with kicad-footprint-generator")
(tags "resistor")
(property "LCSC" "C2757915")
@@ -2894,15 +2896,15 @@
(property "Sheetname" "IO Protection")
(path "/2f59c195-b3d3-4fd3-a2ef-b308811ae6e7/3595c8fc-05e2-4738-b579-63e96f8d2e92")
(attr smd)
- (fp_text reference "RV2" (at 0 -1.43 90) (layer "F.SilkS")
+ (fp_text reference "RV2" (at 0 -1.43) (layer "F.SilkS")
(effects (font (size 1 1) (thickness 0.15)))
(tstamp 5fa2c9bb-54ab-4a27-bda7-32372d044858)
)
- (fp_text value "30V, SDV1608H300C100NPTF" (at 0 1.43 90) (layer "F.Fab")
+ (fp_text value "30V, SDV1608H300C100NPTF" (at 0 1.43) (layer "F.Fab")
(effects (font (size 1 1) (thickness 0.15)))
(tstamp 48f0b019-f318-4be5-a1f4-c2cdb99a8dc2)
)
- (fp_text user "${REFERENCE}" (at 0 0 90) (layer "F.Fab")
+ (fp_text user "${REFERENCE}" (at 0 0) (layer "F.Fab")
(effects (font (size 0.4 0.4) (thickness 0.06)))
(tstamp 7a779213-4031-4dcb-9d0a-450840d320fe)
)
@@ -2916,9 +2918,9 @@
(fp_line (start 0.8 0.4125) (end -0.8 0.4125) (layer "F.Fab") (width 0.1) (tstamp 413838a4-e2f3-4298-a56d-25b7354eddb1))
(fp_line (start 0.8 -0.4125) (end 0.8 0.4125) (layer "F.Fab") (width 0.1) (tstamp 46225502-32a8-4049-a747-fa1110cf4b49))
(fp_line (start -0.8 -0.4125) (end 0.8 -0.4125) (layer "F.Fab") (width 0.1) (tstamp 7c08f837-c9bf-41e7-bde3-d77c820f18c0))
- (pad "1" smd roundrect (at -0.825 0 270) (size 0.8 0.95) (layers "F.Cu" "F.Paste" "F.Mask") (roundrect_rratio 0.25)
+ (pad "1" smd roundrect (at -0.825 0) (size 0.8 0.95) (layers "F.Cu" "F.Paste" "F.Mask") (roundrect_rratio 0.25)
(net 9 "+24V") (pintype "passive") (tstamp b9a0e8c9-f939-44ca-8389-d3952c9ff19a))
- (pad "2" smd roundrect (at 0.825 0 270) (size 0.8 0.95) (layers "F.Cu" "F.Paste" "F.Mask") (roundrect_rratio 0.25)
+ (pad "2" smd roundrect (at 0.825 0) (size 0.8 0.95) (layers "F.Cu" "F.Paste" "F.Mask") (roundrect_rratio 0.25)
(net 10 "GNDPWR") (pintype "passive") (tstamp d7f2035d-abe8-41e0-913d-ca8f1459b2c6))
(model "${KICAD6_3DMODEL_DIR}/Resistor_SMD.3dshapes/R_0603_1608Metric.wrl"
(offset (xyz 0 0 0))
@@ -2971,7 +2973,7 @@
(footprint "Package_SO:SOIC-8_3.9x4.9mm_P1.27mm" (layer "F.Cu")
(tedit 5D9F72B1) (tstamp 641bc0a7-e047-4f1e-a64d-bceac3d2854e)
- (at 179.324 98.044 -90)
+ (at 179.324 97.536 -90)
(descr "SOIC, 8 Pin (JEDEC MS-012AA, https://www.analog.com/media/en/package-pcb-resources/package/pkg_pdf/soic_narrow-r/r_8.pdf), generated with kicad-footprint-generator ipc_gullwing_generator.py")
(tags "SOIC SO")
(property "LCSC" "C94609")
@@ -3495,7 +3497,7 @@
(footprint "Resistor_SMD:R_0402_1005Metric" (layer "F.Cu")
(tedit 5F68FEEE) (tstamp 74bf0370-1641-4a37-a2d5-76705c84972b)
- (at 176.022 100.838 -90)
+ (at 176.022 100.33 -90)
(descr "Resistor SMD 0402 (1005 Metric), square (rectangular) end terminal, IPC_7351 nominal, (Body size source: IPC-SM-782 page 72, https://www.pcb-3d.com/wordpress/wp-content/uploads/ipc-sm-782a_amendment_1_and_2.pdf), generated with kicad-footprint-generator")
(tags "resistor")
(property "Sheetfile" "c3pb-heizung.kicad_sch")
@@ -3700,7 +3702,7 @@
(footprint "Connector_IDC:IDC-Header_2x05_P2.54mm_Vertical" (layer "F.Cu")
(tedit 5EAC9A07) (tstamp 7c721f3b-eb92-49db-8da6-0ddbdc58b768)
- (at 171.196 102.362 180)
+ (at 171.196 102.108 180)
(descr "Through hole IDC box header, 2x05, 2.54mm pitch, DIN 41651 / IEC 60603-13, double rows, https://docs.google.com/spreadsheets/d/16SsEcesNF15N3Lb4niX7dcUr-NY5_MFPQhobNuNppn4/edit#gid=0")
(tags "Through hole vertical IDC box header THT 2x05 2.54mm double row")
(property "LCSC" "C429962")
@@ -3826,7 +3828,7 @@
(footprint "Capacitor_SMD:C_1206_3216Metric" (layer "F.Cu")
(tedit 5F68FEEE) (tstamp 7f2829ab-e649-4c6b-a4ac-1ab738528c5e)
- (at 152.654 102.616 90)
+ (at 152.654 102.235 90)
(descr "Capacitor SMD 1206 (3216 Metric), square (rectangular) end terminal, IPC_7351 nominal, (Body size source: IPC-SM-782 page 76, https://www.pcb-3d.com/wordpress/wp-content/uploads/ipc-sm-782a_amendment_1_and_2.pdf), generated with kicad-footprint-generator")
(tags "capacitor")
(property "LCSC" "C29823")
@@ -4675,7 +4677,7 @@
(footprint "Package_TO_SOT_SMD:SOT-23" (layer "F.Cu")
(tedit 5FA16958) (tstamp 9c12ab3f-c973-47eb-b592-f62a9b501f04)
- (at 154.178 107.188 -90)
+ (at 155.702 107.188 -90)
(descr "SOT, 3 Pin (https://www.jedec.org/system/files/docs/to-236h.pdf variant AB), generated with kicad-footprint-generator ipc_gullwing_generator.py")
(tags "SOT TO_SOT_SMD")
(property "LCSC" "C75882")
@@ -7249,7 +7251,7 @@
(footprint "Diode_SMD:D_SMA" (layer "F.Cu")
(tedit 586432E5) (tstamp ef77da4b-120d-4229-a524-2ee53ab4f805)
- (at 159.512 107.188)
+ (at 161.036 107.188)
(descr "Diode SMA (DO-214AC)")
(tags "Diode SMA (DO-214AC)")
(property "LCSC" "C14996")
diff --git a/c3pb-heizung/c3pb-heizung.kicad_sch b/c3pb-heizung/c3pb-heizung.kicad_sch
index f01039a..4d3fc89 100644
--- a/c3pb-heizung/c3pb-heizung.kicad_sch
+++ b/c3pb-heizung/c3pb-heizung.kicad_sch
@@ -3001,8 +3001,8 @@
(effects (font (size 1.27 1.27)) (justify left bottom))
(uuid 1c8334ef-763c-431d-a42d-0321d1347bd4)
)
- (text "2.5×(1+2.2e3/10e3)+2.2e3×1e−6 = 3.0522\nWe have at most 1% accuracy because of Vref.\nWe have 1% error for 150 uA through 200R, i.e. plus 0.03 V.\nCurrent consumption is 1.5 mA. Cut jumper to\navoid that consumption."
- (at 162.56 77.47 0)
+ (text "RP2040 datasheets suggests a regulated\nreference voltage and the price is\nreasonable so why not.\n\n2.5×(1+2.2e3/10e3)+2.2e3×1e−6 = 3.0522\nWe have at most 1% accuracy because of Vref.\nWe have 1% error for 150 uA through 200R, i.e. plus 0.03 V.\nCurrent consumption is 1.5 mA. Cut jumper to\navoid that consumption."
+ (at 162.56 86.36 0)
(effects (font (size 1.27 1.27)) (justify left bottom))
(uuid 4cbcd124-3ae5-4bab-a041-3f9f0a224a5e)
)
@@ -6810,10 +6810,10 @@
(reference "R46") (unit 1) (value "5.1k") (footprint "Resistor_SMD:R_0402_1005Metric")
)
(path "/54f5266d-1777-4e02-bd31-ebf852aa6849/e88e747d-1260-42e6-b44e-8bc38dac7649"
- (reference "R47") (unit 1) (value "2.4k") (footprint "Resistor_SMD:R_0402_1005Metric")
+ (reference "R47") (unit 1) (value "2.0k") (footprint "Resistor_SMD:R_1206_3216Metric")
)
(path "/54f5266d-1777-4e02-bd31-ebf852aa6849/42515fb5-94d0-402e-8d2a-e9b2b878849e"
- (reference "R48") (unit 1) (value "2.4k") (footprint "Resistor_SMD:R_0402_1005Metric")
+ (reference "R48") (unit 1) (value "2.0k") (footprint "Resistor_SMD:R_1206_3216Metric")
)
(path "/54f5266d-1777-4e02-bd31-ebf852aa6849/cac38dc4-0efc-4e7f-b364-a11cd6e7aece"
(reference "R49") (unit 1) (value "DNP / 1k") (footprint "Resistor_SMD:R_0402_1005Metric")
diff --git a/c3pb-heizung/heaters.kicad_sch b/c3pb-heizung/heaters.kicad_sch
index db1eb43..289f411 100644
--- a/c3pb-heizung/heaters.kicad_sch
+++ b/c3pb-heizung/heaters.kicad_sch
@@ -1403,13 +1403,16 @@
(in_bom yes) (on_board yes) (fields_autoplaced)
(uuid 42515fb5-94d0-402e-8d2a-e9b2b878849e)
(property "Reference" "R48" (id 0) (at 73.66 102.87 90))
- (property "Value" "2.4k" (id 1) (at 73.66 105.41 90))
- (property "Footprint" "Resistor_SMD:R_0402_1005Metric" (id 2) (at 73.66 110.998 90)
+ (property "Value" "2.0k" (id 1) (at 73.66 105.41 90))
+ (property "Footprint" "Resistor_SMD:R_1206_3216Metric" (id 2) (at 73.66 110.998 90)
(effects (font (size 1.27 1.27)) hide)
)
(property "Datasheet" "~" (id 3) (at 73.66 109.22 0)
(effects (font (size 1.27 1.27)) hide)
)
+ (property "LCSC" "C17944" (id 4) (at 73.66 109.22 90)
+ (effects (font (size 1.27 1.27)) hide)
+ )
(pin "1" (uuid 72f6f5ba-561d-4791-a0a3-79a945e41dd6))
(pin "2" (uuid c2e1adf1-2e37-4811-b380-6cfb6cea7c79))
)
@@ -1981,13 +1984,16 @@
(in_bom yes) (on_board yes) (fields_autoplaced)
(uuid e88e747d-1260-42e6-b44e-8bc38dac7649)
(property "Reference" "R47" (id 0) (at 73.66 44.45 90))
- (property "Value" "2.4k" (id 1) (at 73.66 46.99 90))
- (property "Footprint" "Resistor_SMD:R_0402_1005Metric" (id 2) (at 73.66 52.578 90)
+ (property "Value" "2.0k" (id 1) (at 73.66 46.99 90))
+ (property "Footprint" "Resistor_SMD:R_1206_3216Metric" (id 2) (at 73.66 52.578 90)
(effects (font (size 1.27 1.27)) hide)
)
(property "Datasheet" "~" (id 3) (at 73.66 50.8 0)
(effects (font (size 1.27 1.27)) hide)
)
+ (property "LCSC" "C17944" (id 4) (at 73.66 50.8 90)
+ (effects (font (size 1.27 1.27)) hide)
+ )
(pin "1" (uuid e005e929-ea90-4330-b9e6-379fdabb4581))
(pin "2" (uuid 9616d908-7d21-4eb5-9386-b95426426c2b))
)
--
GitLab