Toytalker mini v0.2

tomonoriyamazaki·toytalker·devices/KiCad/toytalker_mini_v0.2/toytalker_mini_v0.2.kicad_pcb

About the Toytalker mini v0.2 PCB

Toytalker mini v0.2 is an open source ESP32 PCB design by tomonoriyamazaki, published on GitHub. It is a 2-layer board measuring 40 × 40 mm, with 38 components from 23 distinct parts.

Its main chip is the ESP32-S3-MINI-1-N4R2, from the ESP32 family. Other key parts include the BQ25185DLHR, AP2112K-3.3TRG1 and MAX98357AEWL_T. By type, the board carries 13 resistors, 11 capacitors, 4 ICs, 3 switches, 2 connectors and 1 microphone.

From the project

AI voice companion toy for kids

子供向け音声AIおもちゃ。話しかけると、好きなキャラクターの声で返事をしてくれる。

- 応答約2秒: STT→LLM→TTSを全区間ストリーミングでつなぎ、最初の音声チャンクが生成され次第再生を開始。サーバーレス（AWS Lambda）構成のまま体感レイテンシを最小化 - 相槌: メインの応答を生成している間に「そうだね〜」などの短い繋ぎ応答を先に返し、会話のテンポを保つ - ボイス・キャラクター切替: TTSプロバイダーをプラガブルに切替可能（OpenAI / Google / Gemini / ElevenLabs / Cartesia / FishAudio / ずんだもん / 自前クローンボイス）。キャラクターの人格プロンプトもDBで管理 - スタンドアロン動作: ESP32-S3搭載の専用基板、おもちゃ単体でWiFi経由でAWSと直接通信（設定ではスマホが必要）

Main components on the Toytalker mini v0.2

BQ25185DLHR AP2112K-3.3TRG1 ESP32-S3-MINI-1-N4R2 MAX98357AEWL_T

Toytalker mini v0.2 bill of materials (BOM)

38 components, 23 distinct parts — part numbers from the project's BOM.

Qty	Part	Footprint	Refs
1	BQ25185DLHR	IC_BQ25185DLHR	U1
1	AP2112K-3.3TRG1	SOT95P285X140-5N	U2
1	ESP32-S3-MINI-1-N4R2	XCVR_ESP32-S3-MINI-1-N4R2	U3
1	MAX98357AEWL_T	BGA9N40P3X3_134X143X69N	U4
1	TYPE-C-31-M-12	HRO_TYPE-C-31-M-12	J1
1	C265329 S2B-ZR-SM4A-TF(LF)(SN)	CONN-SMD_S2B-ZR-SM4A	J2
1	SPH0645LM4H-1-8	MIC_SPH0645LM4H-B	MK1
1	MSK12C02G15-B	SW-SMD_MSK12C02G15-B	S1
1	SKRPABE010	SW_SKRPABE010	S2
1	B3U-1000P	SW_B3U-1000P	S3
1	HC-1.25-2PWT	CONN-SMD_2P-P1.25-HC-1.25-2PWT	SP1
2	NCP15XH103F03RC	R0402	TH1, TH2
1	KT-0805W	LED_KT-0805W	D1
3	10UF 10uF	C_0603_1608Metric	C1, C2, C9
3	22UF 22uF	C_0603_1608Metric	C3, C4, C5
5	0.1UF 0.1uF	C_0402_1005Metric	C6, C7, C8, C10, C11
2	5.1K 5.1k	R_0402_1005Metric	R1, R2
1	13K 13k	R_0402_1005Metric	R3
1	620	R_0402_1005Metric	R4
3	10K 10k	R_0402_1005Metric	R6, R7, R14

Show 3 more

Qty	Part	Footprint	Refs
1	470	R_0402_1005Metric	R8
3	100K 100k	R_0402_1005Metric	R9, R12, R13
2	470K 470k	R_0402_1005Metric	R10, R11

Toytalker mini v0.2 design files

The KiCad project lives in the tomonoriyamazaki/toytalker repository on GitHub; these links point at the commit this page was built from.

Toytalker mini v0.2: common questions

What microcontroller does the Toytalker mini v0.2 use?

The Toytalker mini v0.2 is built around the ESP32-S3-MINI-1-N4R2, from the ESP32 family.

How big is the Toytalker mini v0.2 PCB?

The Toytalker mini v0.2 measures 40 × 40 mm, has 2 copper layers and is 1.6 mm thick.

How many components are on the Toytalker mini v0.2?

38 components, from 23 distinct parts, with part numbers taken from the project's own BOM. The full bill of materials is listed on this page.

Where can I download the Toytalker mini v0.2 design files?

From the tomonoriyamazaki/toytalker repository on GitHub, which has the KiCad layout, the schematic and the BOM; the links under Design files point to each one.