2 layers64.5 × 17.8 mm
ESP PogoPin Programmer
barn53/ESP-PogoPin-Programmer
ESP Programmer with PogoPins to program ESP-1, ESP-12E/F, ... modules.
36 parts2MIT
2 layers35 × 34 mm
CoinThing
barn53/CoinThing34a coin ticker display
- Size
- 35 × 34 mm
- Copper layers
- 2
- Thickness
- 1.6 mm
- Parts
- 24
- Nets
- 24
- Pads
- 137
- Tracks, vias
- 369, 79
- Pours
- 3
- Routed
- Yes
- KiCad
- KiCad 5 (file 20171130)
- Created
- 28 Dec 2020
- Updated
- 30 May 2026
Overview
CoinThing is an open-source printed circuit board by barn53, from the barn53/CoinThing repository on GitHub, published under the MIT licence. It is a 2-layer board of 35 × 34 mm with 24 parts on 24 nets, routed with 369 tracks and 79 vias.
It is built around the ESP-12E, PMBT2222AYSX and S8050 J3Y. Its parts include 9 capacitors, 5 resistors, 3 ICs, 2 transistors and 1 diode. It belongs with the ESP8266 boards of this library.
Main components
3
ESP-12E
SMD,24x16mm-20℃~+70℃ -90dBm 16dBm 170mA 2.4GHz 3V~3.6V 56mA 802.11b/g/n ESP8266 Chip On-board PCB Antenna Over-the-air (OTA) update UART、SPI、I2C SMD,24x16mm WiFi Modules ROHSAi-ThinkerWiFi Modules
PMBT2222AYSX
TSSOP-6(SOT-363)-55℃~+150℃ 100 10nA 2 NPN 250mW 300MHz 300mV 40V 600mA 6V NPN TSSOP-6(SOT-363) Bipolar (BJT) ROHSNexperiaBipolar (BJT)
S8050 J3Y
SOT-23-55℃~+150℃ 1 NPN 100nA 150MHz 200 25V 300mW 500mA 5V 600mV NPN SOT-23 Bipolar (BJT) ROHSJiangsu Changjing Electronics Technology (CJ)Bipolar (BJT)
README
README.mdCoinThing
a coin ticker display
Parts
24| Qty | Value | Footprint | References |
|---|---|---|---|
| 6 | 100n | Capacitor_SMD:C_0805_2012Metric | C1, C3, C4, C5, C7, C8 |
| 2 | 10k | Resistor_SMD:R_Array_Convex_4x0603 | R1, R2 |
| 2 | 4.7u | Capacitor_SMD:C_0805_2012Metric | C2, C9 |
| 1 | 10 | Resistor_SMD:R_0805_2012Metric | R3 |
| 1 | 10k | Resistor_SMD:R_0805_2012Metric | R4 |
| 1 | 1k | Resistor_SMD:R_0805_2012Metric | R5 |
| 1 | 1u | Capacitor_SMD:C_0805_2012Metric | C6 |
| 1 | BL8565 | Package_TO_SOT_SMD:SOT-89-3 | U3 |
| 1 | CP2102-GMR_NRND | Package_DFN_QFN:QFN-28-1EP_5x5mm_P0.5mm_EP3.35x3.35mm | U2 |
| 1 | ESP-12E | barn53-kicad:ESP-12E | U1 |
| 1 | IPSDisplay_240x240 | barn53-kicad:IPSDisplay_240x240_FPC_80deg | D1 |
| 1 | PMBT2222AYS | Package_TO_SOT_SMD:SOT-363_SC-70-6 | Q2 |
| 1 | S8050_J3Y | Package_TO_SOT_SMD:SOT-23 | Q1 |
| 1 | USB_B_Micro | barn53-kicad:MicroUSB_through_hole_fixing | J1 |
| 1 | https://barn53.github.io/CoinThing/ | https:__barn53.github.io_CoinThing_ | QR***** |
The 22 most common of 24 parts.
Questions
How big is the CoinThing PCB?
It measures 35 × 34 mm and has 2 copper layers, 1.6 mm thick.
What parts does the CoinThing use?
24 parts, built around the ESP-12E, PMBT2222AYSX and S8050 J3Y. 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 CoinThing KiCad files?
From the barn53/CoinThing repository on GitHub, at the commit this page was made from: the board is kicad/standard/cointhing.kicad_pcb. PCBKit opens the board in the browser, with nothing to install.
Can I use the CoinThing design in my own project?
Its repository publishes it under the MIT licence: you may reuse it on that licence's terms (keep the author's notice, and for a copyleft licence share your changes alike).
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