├── .gitignore ├── .gitmodules ├── LICENSE ├── README.md ├── case ├── tt06_demo_base.scad ├── tt06_demo_base_m2_insert.stl └── tt06_demo_base_m3_direct.stl ├── doc ├── demoboard-v2-1-2.pdf ├── historic │ ├── README.md │ ├── demoboard-mpw-mb1.jpg │ ├── demoboard-mpw-mb1.pdf │ ├── demoboard-prelim-v1-0-3.pdf │ ├── demoboard-v1-0-5.pdf │ ├── demoboard-v1-1-1.pdf │ ├── demoboard-v1-2-0.pdf │ ├── demoboard-v1-2-2.jpg │ ├── demoboard-v1-2-2.pdf │ ├── demoboard-v1-2-3.jpg │ ├── demoboard-v1-2-3.pdf │ ├── demoboard-v2-0-1.jpg │ ├── demoboard-v2-0-1.pdf │ ├── demoboard-v2-1-0.jpg │ ├── demoboard-v2-1-0.pdf │ └── leaflet │ │ ├── tt03-pinout.png │ │ ├── tt04-pinout.png │ │ ├── tt06-pinout.png │ │ └── tt07-pinout.png └── img │ ├── pmods-io.png │ ├── pmods-mixed.png │ ├── tt07-analogio.jpg │ ├── tt07-demoboard-render.jpg │ ├── tt07-demoboard.jpg │ ├── tt08-demoboard-pinout.jpg │ └── tt08-schematic-preview.jpg ├── fp-info-cache ├── fp-lib-table ├── pcb_extractor.stl ├── rp2040.kicad_sch ├── sym-lib-table ├── tinytapeout-demo.kicad_pcb ├── tinytapeout-demo.kicad_prl ├── tinytapeout-demo.kicad_pro ├── tinytapeout-demo.kicad_pro-bak ├── tinytapeout-demo.kicad_sch ├── tinytapeout-demo.step └── tinytapeout-demo.stl /.gitignore: -------------------------------------------------------------------------------- 1 | # For PCBs designed using KiCad: https://www.kicad.org/ 2 | # Format documentation: https://kicad.org/help/file-formats/ 3 | 4 | # Temporary files 5 | *.000 6 | *.bak 7 | *.bck 8 | *.kicad_pcb-bak 9 | *.kicad_sch-bak 10 | *-backups 11 | *.kicad_prl 12 | *.sch-bak 13 | *.lck 14 | *~ 15 | _autosave-* 16 | *.tmp 17 | *-save.pro 18 | *-save.kicad_pcb 19 | fp-info-cache 20 | 21 | # Netlist files (exported from Eeschema) 22 | *.net 23 | 24 | # Autorouter files (exported from Pcbnew) 25 | *.dsn 26 | *.ses 27 | 28 | # Exported BOM files 29 | *.xml 30 | *.csv 31 | -------------------------------------------------------------------------------- /.gitmodules: -------------------------------------------------------------------------------- 1 | [submodule "tinytapeout-kicad-libs"] 2 | path = tinytapeout-kicad-libs 3 | url = https://github.com/psychogenic/tinytapeout-kicad-libs.git 4 | -------------------------------------------------------------------------------- /LICENSE: -------------------------------------------------------------------------------- 1 | Apache License 2 | Version 2.0, January 2004 3 | http://www.apache.org/licenses/ 4 | 5 | TERMS AND CONDITIONS FOR USE, REPRODUCTION, AND DISTRIBUTION 6 | 7 | 1. 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These, more sensitive, signals are accessed directly through u.fl connectors on the breakout board. 17 | 18 | ![Breakout Board Analog IO](doc/img/tt07-analogio.jpg) 19 | 20 | 21 | ## Pinout Overview 22 | 23 | ![Demoboard Pinout](doc/img/tt08-demoboard-pinout.jpg) 24 | 25 | 26 | ### Previous Demoboard Versions 27 | 28 | The details above are for the latest version of the demoboard. To access leaflets and schematics for prior versions, see [here, in the historic documentation](doc/historic/README.md) 29 | 30 | ## Schematic and Function 31 | 32 | 33 | The full schematic is available as a [PDF](doc/demoboard-v2-1-2.pdf) but the gist of it is: 34 | 35 | ![Demoboard schematic](doc/img/tt08-schematic-preview.jpg) 36 | 37 | The RP2040 is responsible for selecting projects, by controlling the project MUX that's on the ASIC and, under most circumstances, providing the clock for the projects. It may, thereafter, interact with the design via it's connections to the input, output and bidirectional pins. 38 | 39 | Another option is to use the various PMOD and pin headers to tie external circuitry to the design. PMODs are provided in two varieties: straightforward I/O (where one PMOD is dedicated to each of in/out/bidir pins) and "standard" PMODs, that are mapped (mostly) according to specs to allow for SPI, I2C and UART extension boards to be plugged in (this assumes the project has been designed with this in mind, with I/O tasked accordingly). 40 | 41 | 42 | 43 | ## PMODs 44 | 45 | In addition with interfacing directly with projects via the RP2040, extensions and interaction with the ASIC is possible through two sets of [PMODs](https://digilent.com/reference/_media/reference/pmod/pmod-interface-specification-1_2_0.pdf) on the demo boards. 46 | 47 | The three on the bottom provide access to all the project I/O in a logical fashion, with inputs, bidirectional pins and outputs available on their own distinct headers. 48 | 49 | ![IO PMODs](doc/img/pmods-io.png) 50 | 51 | This is nice and orderly and gives you access to all the pins, but extension boards will often need to span at least two, and sometimes three, distinct headers. 52 | 53 | In the hope of providing simpler support for interfacing peripheral modules, an additional set of PMODs pinouts were added on the left side of the PCB. These provide various mixes of in, out and bidirectional pins that should allow a variety of uses 54 | 55 | ![Mixed PMODs](doc/img/pmods-mixed.png) 56 | 57 | It is likely that not all the headers will actually be populated on delivered PCBs, but these are throughole components which makes stuffing them in after the fact relatively easy. 58 | 59 | Both sets of PMODs respect the digilent specification in terms of spacing, and are *host* side pinouts: modules connecting to these must be wired as PMOD peripherals, and can be powered via the supplied 3v3 rails. 60 | 61 | ## RP2040 Pinout 62 | 63 | | TT Pin | RP2040 Pin | I2C | SPI | UART | 64 | | --------- | ---------- | -------- | -------- | -------- | 65 | | ui_in[0] | GPIO9 | | SPI1.cs | | 66 | | ui_in[1] | GPIO10 | | SPI1.sck | | 67 | | ui_in[2] | GPIO11 | | SPI1.tx | UART1.rts| 68 | | ui_in[3] | GPIO12 | | | UART0.tx | 69 | | ui_in[4] | GPIO17 | | SPI0.cs | | 70 | | ui_in[5] | GPIO18 | | SPI0.sck | | 71 | | ui_in[6] | GPIO19 | | SPI0.tx | UART0.rts| 72 | | ui_in[7] | GPIO20 | | | UART1.tx | 73 | | uo_out[0] | GPIO5 | | | UART1.rx | 74 | | uo_out[1] | GPIO6 \* | | | UART1.cts| 75 | | uo_out[2] | GPIO7 \* | | | | 76 | | uo_out[3] | GPIO8 \* | | SPI1.rx | | 77 | | uo_out[4] | GPIO13 | | | UART0.rx | 78 | | uo_out[5] | GPIO14 | | | UART0.cts| 79 | | uo_out[6] | GPIO15 | | | | 80 | | uo_out[7] | GPIO16 | | SPI0.rx | | 81 | | uio[0] | GPIO21 | | SPI0.cs | UART1.rx | 82 | | uio[1] | GPIO22 | I2C1.sda | SPI0.sck | UART1.cts| 83 | | uio[2] | GPIO23 | I2C1.scl | SPI0.tx | UART1.rts| 84 | | uio[3] | GPIO24 | I2C0.sda | SPI1.rx | UART1.tx | 85 | | uio[4] | GPIO25 | I2C0.scl | SPI1.cs | UART1.rx | 86 | | uio[5] | GPIO26 | I2C1.sda | SPI1.sck | UART1.cts| 87 | | uio[6] | GPIO27 | I2C1.scl | SPI1.tx | UART1.rts| 88 | | uio[7] | GPIO28 | | | | 89 | 90 | \* These pins are multiplexed. They are connected to the RP2040 when GPIO1 is high. 91 | 92 | ## Removing the ASIC breakout board 93 | 94 | Be careful removing the breakout board, it's easy to bend the pins or hurt yourself. 95 | 96 | * Lever the breakout board up 1mm at a time by inserting a pen or other lever under the board and gently pressing, 97 | * Keep swapping sides, to evenly push the carrier board away from the demo board. 98 | 99 | 100 | These [levers](pcb_extractor.stl) can be 3D printed and make it easier. This [video](https://discord.com/channels/1009193568256135208/1011201396659474432/1260876742730448907) shows them in use. 101 | 102 | 103 | There are arrows indicating areas that are relatively component-free to assist with placing the levers. 104 | 105 | ## License 106 | 107 | * The PCB is licensed under the [Apache2 License](LICENSE) 108 | * The documentation is licensed under the [CC0](https://creativecommons.org/publicdomain/zero/1.0/) 109 | * OSHWA registration [CA000047](https://certification.oshwa.org/ca000047.html) 110 | -------------------------------------------------------------------------------- /case/tt06_demo_base.scad: -------------------------------------------------------------------------------- 1 | /* 2 | * Base for Tiny Tapeout 06+ Demoboard 3 | * 4 | * Design: hxr.social/@thomasflummer 5 | * 6 | * License: CC-BY-SA 7 | * 8 | */ 9 | 10 | /* 11 | * Variables for Customizer 12 | * ================================================================== 13 | * 14 | */ 15 | 16 | // select type of mounting hardware 17 | Screw_Type = "M2 with insert"; // [M3 direct, M2 with insert] 18 | 19 | //----------------- 20 | /* [AdditionalSettings] */ 21 | 22 | // total height (in mm) 23 | Height = 8; 24 | 25 | module pcb_base(width, length, pcb_thickness, corner_radius, height, mounting_hole_diameter) 26 | { 27 | difference() 28 | { 29 | union() 30 | { 31 | hull() 32 | { 33 | for(x = [-1, 1]) 34 | { 35 | for(y = [-1, 1]) 36 | { 37 | translate([x*(width/2 - corner_radius), y*(length/2 - corner_radius), height/2]) 38 | cylinder(r = corner_radius + 2, h = height, center = true, $fn = 150); 39 | } 40 | } 41 | 42 | for(x = [-1, 1]) 43 | { 44 | for(y = [-1, 1]) 45 | { 46 | translate([x*(width/2 - corner_radius), y*(length/2 - corner_radius), height/2]) 47 | cylinder(r = corner_radius + 2 + 0.5, h = height-1, center = true, $fn = 150); 48 | } 49 | } 50 | } 51 | } 52 | union() 53 | { 54 | // PCB cutout 55 | hull() 56 | { 57 | for(x = [-1, 1]) 58 | { 59 | for(y = [-1, 1]) 60 | { 61 | translate([x*(width/2 - corner_radius), y*(length/2 - corner_radius), height - pcb_thickness/2]) 62 | cylinder(r = corner_radius + 0.4, h = pcb_thickness + 0.01, center = true, $fn = 150); 63 | } 64 | } 65 | } 66 | 67 | // space for PTH pins and rubber feet 68 | hull() 69 | { 70 | for(x = [-1, 1]) 71 | { 72 | for(y = [-1, 1]) 73 | { 74 | translate([x*(width/2 - corner_radius), y*(length/2 - corner_radius), height/2 + 1.5]) 75 | cylinder(r = corner_radius - 1, h = height, center = true, $fn = 150); 76 | } 77 | } 78 | } 79 | } 80 | } 81 | // studs for screws/inserts 82 | 83 | for(x = [-1, 1]) 84 | { 85 | for(y = [-1, 1]) 86 | { 87 | if(x == 1 && y == -1) 88 | { 89 | difference() 90 | { 91 | translate([x*(width/2 - 3.5), y*(length/2 - 8), (height - pcb_thickness)/2]) 92 | cylinder(d = 6, h = height - pcb_thickness, center = true, $fn = 150); 93 | 94 | translate([x*(width/2 - 3.5), y*(length/2 - 8), (height - pcb_thickness)/2]) 95 | cylinder(d = mounting_hole_diameter, h = height - pcb_thickness + 0.01, center = true, $fn = 150); 96 | } 97 | } 98 | else 99 | { 100 | difference() 101 | { 102 | translate([x*(width/2 - 3.5), y*(length/2 - 3.5), (height - pcb_thickness)/2]) 103 | cylinder(d = 6, h = height - pcb_thickness, center = true, $fn = 150); 104 | 105 | translate([x*(width/2 - 3.5), y*(length/2 - 3.5), (height - pcb_thickness)/2]) 106 | cylinder(d = mounting_hole_diameter, h = height - pcb_thickness + 0.01, center = true, $fn = 150); 107 | } 108 | } 109 | } 110 | } 111 | 112 | 113 | } 114 | 115 | 116 | if(Screw_Type == "M2 with insert") 117 | { 118 | pcb_base(99.5, 78, 1.6, 3.0, Height, 3.3); 119 | } 120 | 121 | if(Screw_Type == "M3 direct") 122 | { 123 | pcb_base(99.5, 78, 1.6, 3.0, Height, 2.9); 124 | } -------------------------------------------------------------------------------- /case/tt06_demo_base_m2_insert.stl: -------------------------------------------------------------------------------- https://raw.githubusercontent.com/TinyTapeout/tt-demo-pcb/028a51b1e5c6ff667839e42a188bc87d1115ad95/case/tt06_demo_base_m2_insert.stl -------------------------------------------------------------------------------- /case/tt06_demo_base_m3_direct.stl: -------------------------------------------------------------------------------- https://raw.githubusercontent.com/TinyTapeout/tt-demo-pcb/028a51b1e5c6ff667839e42a188bc87d1115ad95/case/tt06_demo_base_m3_direct.stl -------------------------------------------------------------------------------- /doc/demoboard-v2-1-2.pdf: -------------------------------------------------------------------------------- https://raw.githubusercontent.com/TinyTapeout/tt-demo-pcb/028a51b1e5c6ff667839e42a188bc87d1115ad95/doc/demoboard-v2-1-2.pdf -------------------------------------------------------------------------------- /doc/historic/README.md: -------------------------------------------------------------------------------- 1 | # Schematics for prior demoboard versions 2 | 3 | Though this schematic and layout data is all preserved in the commit history, for ease of reference the major milestones are accessible here, in reverse chronological order. 4 | 5 | These should be the revisions actually sent to production for distribution. The PDF includes the full schematic and the preview gives access to the most important information, as the RP2040 support sheet basically doesn't change. 6 | 7 | 8 | ## TT07 9 | 10 | With the TT07 demoboard, signal naming was uniformized (using *ui_in*, *uo_out*). 11 | 12 | ![TT07 leaflet](leaflet/tt07-pinout.png) 13 | 14 | ![TT07 schematic](demoboard-v2-1-0.jpg) 15 | 16 | 17 | [Version 2.1.0 schematic PDF](demoboard-v2-1-0.pdf) 18 | 19 | 20 | Commit a799acb3886b682b0f86c2f4d6155c08b5c505de from Wed Dec 11, 2024 21 | 22 | 23 | ## TT06 24 | 25 | With TT06, the discreet MUX was dropped (along with Caravel support), the new much more comfortable piano switches were introduced for the input port. The carrier format changed to break compatibility with prior boards, because of a new pinout and analog pin support. 26 | 27 | ![TT06 leaflet](leaflet/tt06-pinout.png) 28 | 29 | ![TT06 schematic](demoboard-v2-0-1.jpg) 30 | 31 | [Version 2.0.1 schematic PDF](demoboard-v2-0-1.pdf) 32 | 33 | Commit 292760e1f727d805be471b7700232c9482b70ae3 from Thu Oct 10, 2024 34 | 35 | ## TT05 36 | 37 | 38 | ![TT04/TT05 leaflet](leaflet/tt04-pinout.png) 39 | 40 | ![TT05 schematic](demoboard-v1-2-3.jpg) 41 | 42 | [Version 1.2.3 schematic PDF](demoboard-v1-2-3.pdf) 43 | 44 | Commit a88cbc08bdef564b16dc113f4489af65ff2ee86b from Tue Jun 11, 2024 45 | 46 | 47 | ## TT04 48 | 49 | The TT04 demoboard introduced the RP2040, to handle selecting the projects through the ASIC project MUX. TT04 boards also used a discreet multiplexer in order to provide enough pinnage to do all the things and have access to the caravel HK SPI safety net. 50 | 51 | ![TT04 schematic](demoboard-v1-2-2.jpg) 52 | 53 | [Version 1.2.2 schematic PDF](demoboard-v1-2-2.pdf) 54 | 55 | Commit cfdd80d7b79a667883998caccc05ebfad5d1b985 from Fri Apr 26, 2024 56 | 57 | 58 | ## TT02/TT03 59 | 60 | Original demoboard used with TT02 and TT03. 61 | 62 | ![TT03 leaflet](leaflet/tt03-pinout.png) 63 | 64 | ![TT03 schematic](demoboard-mpw-mb1.jpg) 65 | 66 | [TT03 demoboard schematic PDF](demoboard-mpw-mb1.pdf) -------------------------------------------------------------------------------- /doc/historic/demoboard-mpw-mb1.jpg: -------------------------------------------------------------------------------- https://raw.githubusercontent.com/TinyTapeout/tt-demo-pcb/028a51b1e5c6ff667839e42a188bc87d1115ad95/doc/historic/demoboard-mpw-mb1.jpg 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"project": { 80 | "files": [] 81 | } 82 | } 83 | -------------------------------------------------------------------------------- /tinytapeout-demo.kicad_pro: -------------------------------------------------------------------------------- 1 | { 2 | "board": { 3 | "3dviewports": [], 4 | "design_settings": { 5 | "defaults": { 6 | "apply_defaults_to_fp_fields": false, 7 | "apply_defaults_to_fp_shapes": false, 8 | "apply_defaults_to_fp_text": false, 9 | "board_outline_line_width": 0.1, 10 | "copper_line_width": 0.2, 11 | "copper_text_italic": false, 12 | "copper_text_size_h": 1.5, 13 | "copper_text_size_v": 1.5, 14 | "copper_text_thickness": 0.3, 15 | "copper_text_upright": false, 16 | "courtyard_line_width": 0.05, 17 | "dimension_precision": 4, 18 | "dimension_units": 3, 19 | "dimensions": { 20 | "arrow_length": 1270000, 21 | "extension_offset": 500000, 22 | "keep_text_aligned": true, 23 | "suppress_zeroes": false, 24 | "text_position": 0, 25 | "units_format": 1 26 | }, 27 | 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"error", 130 | "unconnected_items": "error", 131 | "unresolved_variable": "error", 132 | "via_dangling": "warning", 133 | "zones_intersect": "error" 134 | }, 135 | "rules": { 136 | "allow_blind_buried_vias": false, 137 | "allow_microvias": false, 138 | "max_error": 0.005, 139 | "min_clearance": 0.0, 140 | "min_connection": 0.0, 141 | "min_copper_edge_clearance": 0.3, 142 | "min_hole_clearance": 0.2, 143 | "min_hole_to_hole": 0.25, 144 | "min_microvia_diameter": 0.2, 145 | "min_microvia_drill": 0.1, 146 | "min_resolved_spokes": 1, 147 | "min_silk_clearance": 0.0, 148 | "min_text_height": 0.8, 149 | "min_text_thickness": 0.08, 150 | "min_through_hole_diameter": 0.2, 151 | "min_track_width": 0.16, 152 | "min_via_annular_width": 0.15, 153 | "min_via_diameter": 0.3, 154 | "solder_mask_clearance": 0.0, 155 | "solder_mask_min_width": 0.0, 156 | "solder_mask_to_copper_clearance": 0.0, 157 | "use_height_for_length_calcs": true 158 | }, 159 | "teardrop_options": [ 160 | { 161 | "td_onpadsmd": true, 162 | "td_onroundshapesonly": false, 163 | "td_ontrackend": false, 164 | "td_onviapad": true 165 | } 166 | ], 167 | "teardrop_parameters": [ 168 | { 169 | "td_allow_use_two_tracks": true, 170 | "td_curve_segcount": 0, 171 | "td_height_ratio": 1.0, 172 | "td_length_ratio": 0.5, 173 | "td_maxheight": 2.0, 174 | "td_maxlen": 1.0, 175 | "td_on_pad_in_zone": false, 176 | "td_target_name": "td_round_shape", 177 | "td_width_to_size_filter_ratio": 0.9 178 | }, 179 | { 180 | "td_allow_use_two_tracks": true, 181 | "td_curve_segcount": 0, 182 | "td_height_ratio": 1.0, 183 | "td_length_ratio": 0.5, 184 | "td_maxheight": 2.0, 185 | "td_maxlen": 1.0, 186 | "td_on_pad_in_zone": false, 187 | "td_target_name": "td_rect_shape", 188 | "td_width_to_size_filter_ratio": 0.9 189 | }, 190 | { 191 | "td_allow_use_two_tracks": true, 192 | "td_curve_segcount": 0, 193 | "td_height_ratio": 1.0, 194 | "td_length_ratio": 0.5, 195 | "td_maxheight": 2.0, 196 | "td_maxlen": 1.0, 197 | "td_on_pad_in_zone": false, 198 | "td_target_name": "td_track_end", 199 | "td_width_to_size_filter_ratio": 0.9 200 | } 201 | ], 202 | "track_widths": [ 203 | 0.0, 204 | 0.16, 205 | 0.18, 206 | 0.2, 207 | 0.245, 208 | 0.25, 209 | 0.3, 210 | 0.4 211 | ], 212 | "tuning_pattern_settings": { 213 | "diff_pair_defaults": { 214 | "corner_radius_percentage": 80, 215 | "corner_style": 1, 216 | "max_amplitude": 1.0, 217 | "min_amplitude": 0.2, 218 | "single_sided": false, 219 | "spacing": 1.0 220 | }, 221 | "diff_pair_skew_defaults": { 222 | "corner_radius_percentage": 80, 223 | "corner_style": 1, 224 | "max_amplitude": 1.0, 225 | "min_amplitude": 0.2, 226 | "single_sided": false, 227 | "spacing": 0.6 228 | }, 229 | "single_track_defaults": { 230 | "corner_radius_percentage": 80, 231 | "corner_style": 1, 232 | "max_amplitude": 1.0, 233 | "min_amplitude": 0.2, 234 | "single_sided": false, 235 | "spacing": 0.6 236 | } 237 | }, 238 | "via_dimensions": [ 239 | { 240 | "diameter": 0.0, 241 | "drill": 0.0 242 | }, 243 | { 244 | 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665 | "netclass": "pwrhi", 666 | "pattern": "VBUS" 667 | }, 668 | { 669 | "netclass": "clk", 670 | "pattern": "osc*" 671 | }, 672 | { 673 | "netclass": "clk", 674 | "pattern": "*clk" 675 | }, 676 | { 677 | "netclass": "ioin", 678 | "pattern": "in\\d+" 679 | }, 680 | { 681 | "netclass": "ioout", 682 | "pattern": ".*out\\d+" 683 | }, 684 | { 685 | "netclass": "config", 686 | "pattern": "ctrl_*" 687 | }, 688 | { 689 | "netclass": "config", 690 | "pattern": "HK_*" 691 | }, 692 | { 693 | "netclass": "pwrhi", 694 | "pattern": "+5V" 695 | }, 696 | { 697 | "netclass": "pwr", 698 | "pattern": "+?V?" 699 | }, 700 | { 701 | "netclass": "iobidir", 702 | "pattern": "uio\\d+" 703 | }, 704 | { 705 | "netclass": "usbdiff", 706 | "pattern": "usb_d*" 707 | }, 708 | { 709 | "netclass": "config", 710 | "pattern": "~?ctrl_*" 711 | }, 712 | { 713 | "netclass": "pwrhi", 714 | "pattern": "/vfused" 715 | }, 716 | { 717 | "netclass": "pwrhi", 718 | "pattern": "1v8(A|B)" 719 | } 720 | ] 721 | }, 722 | "pcbnew": 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"20adca1d-43a1-4784-9682-8b7dd1c7d330", 938 | "Root" 939 | ], 940 | [ 941 | "5384e408-8f0c-411c-b558-df35c2e889ec", 942 | "RP2040" 943 | ] 944 | ], 945 | "text_variables": {} 946 | } 947 | -------------------------------------------------------------------------------- /tinytapeout-demo.stl: -------------------------------------------------------------------------------- https://raw.githubusercontent.com/TinyTapeout/tt-demo-pcb/028a51b1e5c6ff667839e42a188bc87d1115ad95/tinytapeout-demo.stl --------------------------------------------------------------------------------