2 layers64 × 38.5 mm
Wafflehw ttgo
Jankyneering/Waffle_hw
Hardware designs for Waffle, a compact Pager and general RF multitool.
13 parts2GPL-3.0
2 layers42 × 66 mm
Wafflehw rev0.1
Jankyneering/Waffle_hw2Hardware designs for Waffle, a compact Pager and general RF multitool.
- Size
- 42 × 66 mm
- Copper layers
- 2
- Thickness
- 1.6 mm
- Parts
- 42
- Nets
- 72
- Pads
- 220
- Tracks, vias
- 567, 104
- Pours
- 1
- Routed
- Yes
- KiCad
- KiCad 8.0 (file 20240108)
- Created
- 13 Sep 2024
- Updated
- 3 May 2026
Overview
Wafflehw rev0.1 is an open-source printed circuit board by Jankyneering, from the Jankyneering/Waffle_hw repository on GitHub, published under the GPL-3.0 licence. It is a 2-layer board of 42 × 66 mm with 42 parts on 72 nets, routed with 567 tracks and 104 vias.
It is built around the ESP32-S3-WROOM-1-N8, MD57E33QA3 and TP4054, with the AO3400A, 1N4148W and GZ2012D601TF among its other parts. Its parts include 14 capacitors, 5 ICs, 4 resistors, 4 connectors and 4 switches. It belongs with the ESP32 boards of this library.
Main components
10
ESP32-S3-WROOM-1-N8
SMD,25.5x18mm-40℃~+85℃ -98.2dBm 2.4GHz 20.5dBm 355mA 3V~3.6V 95mA Bluetooth5.0 ESP32-S3 Chip On-board PCB Antenna UART、SPI、I2C、I2S、USB SMD,25.5x18mm WiFi Modules ROHSEspressif SystemsWiFi Modules
MD57E33QA3
SOT-23-3L-40℃~+85℃ 1 120mV@(300mA) 20uA 20uVrms 3.3V 300mA 5.5V 94dB@(1kHz) Fixed Over Current Protection、Over Temperature Protection、Enable Positive SOT-23-3L Voltage Regulators - Linear, Low Drop Out (LDO) Regulators ROHSShanghai Mingda MicroelectronicsVoltage Regulators - Linear, Low Drop Out (LDO) Regulators
TP4054
SOT-23-5L-40℃~+85℃ 1 25uA 4.2V 4.2V~6.5V 500mA Charging IC Lithium Battery Not supported 恒流充电、恒压充电、涓流充电、自动再充电、充电终止、可编程充电电流、软启动、欠压锁定 SOT-23-5L Battery Management ROHSUMWBattery Management
AO3400A
SOT-23-55℃~+150℃ 1 N-channel 1.45V 1.4W 30V 48mΩ@2.5V 5.7A 50pF 630pF 75pF 7nC@10V N-Channel SOT-23 MOSFETs ROHSAlpha & Omega SemiconductorMOSFETs
1N4148W
SOD-123150mA 1A 1V@50mA 1uA@75V 400mW 4ns 75V Independent SOD-123 Switching Diodes ROHSSTMicroelectronicsSwitching Diodes
GZ2012D601TF
0805-55℃~+125℃ 1 300mΩ 500mA 600Ω@100MHz ±25% 0805 Ferrite Beads ROHSSunlordFerrite Beads
AN1603-433
SMD0.5dBi 1.65mm 16mm 2 3.1mm 433MHz 50Ω 8MHz Patch Antenna SMD Antennas ROHSRainsun microwave TechAntennas
FH34SRJ-30S-0.5SH(50)
SMD,P=0.5mm,卧贴-55℃~+105℃ 0.3mm 0.5mm 1mm 30P Double-Sided Contacts, Top and Bottom Entry Gold Phosphor bronze Surface Mount, Right Angle SMD,P=0.5mm,卧贴 FFC, FPC (Flat Flexible) Connector Assemblies ROHSHirose ElectricFFC, FPC (Flat Flexible) Connector Assemblies
MLT-8530
SMD,8.5x8.5mm-20℃~+70℃ 2.5V~4.5V 2.7kHz 3.3mm 3.6V 8.5mm 8.5mm 80dB 95mA Electromagnetic Passive (Externally Driven) SMD SMD,8.5x8.5mm Buzzers ROHSJiangsu Huaneng ElecBuzzers
TYPE-C16PIN
SMD-25℃~+85℃ 1 10 thousand cycles 16P 3A 5V 7.35mm Black Female Surface Mount, Right Angle Type-C SMD USB Connectors ROHSSHOU HANUSB Connectors
README
README.mdWaffle: a pocket pager, LoRA transceiver and RF experimentation platform
Hardware designs for Waffle, a compact Pager and general RF multitool.
Introduction
This is a reboot of a project started in 2016, aimed at creating a pocket-sized digital radio system. Due to a lack of clear objectives and motivation, this project never got any further. However, there is today a certain revival of POCSAG in the amateur radio community, with the DAPNET project. No open-source pager design exist to this day. This project aims to bridge that gap, and bring an open design that could be adapted to anyone's needs.
Feature list
- UHF (430-440) support
- User interface with three buttons and an easy-to-read display
- Programmable either via the display, or via Wifi and web portal.
Hardware
Uses an ESP32-S3, coupled with an SX1276 for reception and transmission of signals. Battery is a classic 3.7V Li-Ion cell with integrated battery management and charging. USB-C port for programming and charging. OLED or LCD display (TBD).
Hardware revision list
- The initial design from 2016 is known as rev XX
- 0.1a: current version. Aims to validate the basic hardware choices and being dev on software.
Software
The (WIP) software can be found in this repository.
Parts
42| Qty | Value | Footprint | References |
|---|---|---|---|
| 6 | 1u | Capacitor_SMD:C_0805_2012Metric | C3, C8, C9, C11, C13, C14 |
| 3 | 100n | Capacitor_SMD:C_0805_2012Metric | C1, C4, C10 |
| 3 | 10u | Capacitor_SMD:C_0805_2012Metric | C2, C5, C12 |
| 3 | AO3400A | Package_TO_SOT_SMD:SOT-23 | Q1, Q2, Q3 |
| 2 | 1N4148W | Diode_SMD:D_SOD-123 | D1, D2 |
| 2 | 2.2u | Capacitor_SMD:C_0805_2012Metric | C6, C7 |
| 2 | 5K1 | Capacitor_SMD:C_0805_2012Metric | R1, R2 |
| 2 | GZ2012D601TF | Inductor_SMD:L_0805_2012Metric | FB1, FB2 |
| 2 | MD57E33QA3 | easyeda:SOT-23-3_L2.9-W1.6-P1.90-LS2.8-BR | U4, U5 |
| 1 | 10K | Capacitor_SMD:C_0805_2012Metric | R4 |
| 1 | 2K2 | Capacitor_SMD:C_0805_2012Metric | R3 |
| 1 | AN1603-433 | RF_Antenna:Coilcraft_MA5532-AE_RFID | AE1 |
| 1 | Ai-Thinker-Ra-01 | RF_Module:Ai-Thinker-Ra-01-LoRa | U1 |
| 1 | BATT | Waffle2Rev0.1:ER-CON2.0-2P-SMD | J4 |
| 1 | BTN_DN | Button_Switch_SMD:SW_SPST_CK_RS282G05A3 | SW3 |
| 1 | BTN_OK | Button_Switch_SMD:SW_SPST_CK_RS282G05A3 | SW4 |
| 1 | BTN_UP | Button_Switch_SMD:SW_SPST_CK_RS282G05A3 | SW2 |
| 1 | ESP32-S3-WROOM-1 | RF_Module:ESP32-S3-WROOM-1 | U3 |
| 1 | FH34SRJ-30S-0.5SH | Waffle2Rev0.1:ER-CON30HB-1 | J3 |
| 1 | LCD_BL | Waffle2Rev0.1:ER-CON2.0-2P-SMD | J5 |
| 1 | MLT-8530 | easyeda:BUZ-SMD_4P-L8.5-W8.5-P8.50-BR | BUZZER1 |
| 1 | Motor_DC | Jumper:SolderJumper-2_P1.3mm_Open_RoundedPad1.0x1.5mm | M1 |
| 1 | OLED_Disp | Connector_PinHeader_2.54mm:PinHeader_1x04_P2.54mm_Vertical | J2 |
| 1 | SW_Push | Button_Switch_SMD:SW_SPST_CK_RS282G05A3 | SW1 |
| 1 | TP4054 | Package_TO_SOT_SMD:SOT-23-5 | U2 |
| 1 | TYPE-C16PIN | easyeda:USB-C-SMD_TYPE-C16PIN | USB1 |
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Questions
How big is the Wafflehw rev0.1 PCB?
It measures 42 × 66 mm and has 2 copper layers, 1.6 mm thick.
What parts does the Wafflehw rev0.1 use?
42 parts, built around the ESP32-S3-WROOM-1-N8, MD57E33QA3, TP4054 and AO3400A. 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.
Where can I download the Wafflehw rev0.1 KiCad files?
From the Jankyneering/Waffle_hw repository on GitHub, at the commit this page was made from: the board is wafflehw_rev0.1/wafflehw_rev0.1.kicad_pcb and its schematic wafflehw_rev0.1/wafflehw_rev0.1.kicad_sch. PCBKit opens the board in the browser, with nothing to install.
Can I use the Wafflehw rev0.1 design in my own project?
Its repository publishes it under the GPL-3.0 licence: you may reuse it on that licence's terms (keep the author's notice, and for a copyleft licence share your changes alike).