ThyFriendlyFox/agentcast-prototypeAn HDMI dongle with a far-field mic array. Plug it into any TV; people in the room talk, a cloud agent does the work, and the TV shows the results. The product spec is docs/office-agent-dongle.md.
Agentcast micbar is an open-source printed circuit board by ThyFriendlyFox, from the ThyFriendlyFox/agentcast-prototype repository on GitHub. It is a 2-layer board of 140 × 14 mm with 25 parts on 19 nets, routed with 224 tracks and 41 vias.
It is built around the 74LVC1G34Z, ICS-43434 and PCM12SMTR, with the SM10B-SRSS-TB among its other parts. Its parts include 8 capacitors, 6 resistors, 3 diodes, 2 ICs and 1 connector.
An HDMI dongle with a far-field mic array. Plug it into any TV; people in
the room talk, a cloud agent does the work, and the TV shows the results.
The product spec is docs/office-agent-dongle.md.
| Version | State | Boards | Notes |
|---|---|---|---|
| v0.4 | in work | the v0.3 stick with a male HDMI Type-A plug on its end: plugs straight into the TV | Gates GREEN. Plug footprint awaits the plug's drawing (4 numbers). Not yet ordered. |
| v0.3 | archived | one board, 67 x 46 mm stick: CM5 carrier, HDMI-A at the end, USB-C power and USB-C external mic on the sides, on-board mic, hardware mute | Gates GREEN. CM5 position checked against Raspberry Pi's 3D model. Fab files in hardware/v0.3/dongle/fab/. Not yet ordered. |
| v0.2 | archived | one board, 57 x 50.4 mm: CM5 carrier, HDMI-A, USB-C power, USB-C port for an external mic, on-board mic, hardware mute | Gates GREEN. Fab files in hardware/v0.2/dongle/fab/. Not yet ordered. |
| v0.1 | archived | main (CM5 carrier) and mic bar (4 mics) on a cable | Gates GREEN on both boards. Never ordered. |
The boards are designed as code and checked with the
Via EE Workcenter: KiCad 10,
ngspice and FreeRouting, driven by workcenter. Each board folder holds a
design.py; the KiCad files beside it are generated from it.
make verifyagent-kit/ROUTING.md says which file governs
which job. Agents read CLAUDE.md first.
| Qty | Value | Footprint | References |
|---|---|---|---|
| 6 | 100n | Capacitor_SMD:C_0402_1005Metric | C3, C4, C5, C6, C7, C8 |
| 4 | ICS-43434 | Sensor_Audio:InvenSense_ICS-43434-6_3.5x2.65mm | MK1, MK2, MK3, MK4 |
| 2 | 1k | Resistor_SMD:R_0402_1005Metric | R1, R4 |
| 2 | 33 | Resistor_SMD:R_0402_1005Metric | R2, R3 |
| 2 | 74LVC1G34 | Package_TO_SOT_SMD:SOT-353_SC-70-5 | U1, U2 |
| 1 | 10k | Resistor_SMD:R_0402_1005Metric | R5 |
| 1 | 10u | Capacitor_SMD:C_0603_1608Metric | C2 |
| 1 | 1u | Capacitor_SMD:C_0402_1005Metric | C1 |
| 1 | 330 | Resistor_SMD:R_0402_1005Metric | R6 |
| 1 | PCM12SMTR | Button_Switch_SMD:SW_SPDT_PCM12 | SW1 |
| 1 | SM10B-SRSS-TB | Connector_JST:JST_SH_SM10B-SRSS-TB_1x10-1MP_P1.00mm_Horizontal | J1 |
| 1 | amber STATE | LED_SMD:LED_0603_1608Metric | D3 |
| 1 | green LIVE | LED_SMD:LED_0603_1608Metric | D1 |
| 1 | red MUTED | LED_SMD:LED_0603_1608Metric | D2 |
It measures 140 × 14 mm and has 2 copper layers, 1.6 mm thick.
25 parts, built around the 74LVC1G34Z, ICS-43434, PCM12SMTR and SM10B-SRSS-TB. The full list of its parts is on this page, with links to each part's symbol and footprint where PCBKit's library has them.
From the ThyFriendlyFox/agentcast-prototype repository on GitHub, at the commit this page was made from: the board is hardware/v0.1/micbar/agentcast_micbar.kicad_pcb and its schematic hardware/v0.1/main/agentcast_main.kicad_sch. PCBKit opens the board in the browser, with nothing to install.
Its repository states no licence, so its author keeps all rights: ask ThyFriendlyFox before reusing the design.
ThyFriendlyFox/agentcast-prototype
An HDMI dongle with a far-field mic array. Plug it into any TV; people in the room talk, a cloud agent does the work, and the TV shows the results. The product spec is docs/office-agent-dongle.md.
ThyFriendlyFox/agentcast-prototype
An HDMI dongle with a far-field mic array. Plug it into any TV; people in the room talk, a cloud agent does the work, and the TV shows the results. The product spec is docs/office-agent-dongle.md.
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