2 layers33.7 × 97.8 mm
HAN ESP TSS721
UtilitechAS/amsreader-firmware
ESP8266 and ESP32 compatible firmware to read, interpret and publish data to MQTT from smart electrical meters, both DLMS and DSMR is supported
29 parts470
2 layers59.7 × 85.1 mm
ESP Cerry
Ranlvor/ESP-Cherry3Little board that connects 4 Cherry Switches and 4 LEDs to a Wemos D1 Mini Board
- Size
- 59.7 × 85.1 mm
- Copper layers
- 2
- Thickness
- 1.6 mm
- Parts
- 24
- Nets
- 15
- Pads
- 67
- Tracks, vias
- 82, 0
- Pours
- 3
- Routed
- Yes
- KiCad
- KiCad 5 (file 20171130)
- Created
- 13 Nov 2018
- Updated
- 23 Apr 2019
Overview
ESP Cerry is an open-source printed circuit board by Ranlvor, from the Ranlvor/ESP-Cherry repository on GitHub. It is a 2-layer board of 59.7 × 85.1 mm with 24 parts on 15 nets, routed with 82 tracks and 0 vias.
It is built around the DS18B20. Its parts include 7 resistors, 4 diodes, 4 switches and 2 ICs.
Main components
1README
README.mdESP-Cherry
Little board that connects 4 Cherry Switches and 4 LEDs to a Wemos D1 Mini Board
Folder Structure:
- ESP-Cerry: KiCad Project of the Board
- gehaeuse: OpenSCAD Project for a 3D printed casing
Parts
- U1: Wemos D1 Mini
- Switches SW1, SW2, SW3, SW4: CHERRY MX-Switches, choose to your liking
- Resistors R1, R2: Pull-Up-Resistors for SW3 and SW4, 1kΩ - 100kΩ should be fine
- LEDs D1, D2, D3, D4: LEDs to iluminate the Keykaps, choose to your liking. Use LEDs which fit your switches. The switches I used fit 3mm LED's but some do not
- Resistors R3, R4, R5, R6: protective resistors for LEDs D1, D2, D3, D4: choose whatever fits your LEDs to be powered from 3.3V.
Optional Parts:
- Add R7 = 4.7kΩ and U2 = DS18B20 for temperature mesurement
Other
- Power the Wemos D1 via USB, it powers the rest of the board (or solder 3.3V or 5V directly to the Wemos)
- Mounting Holes fit M3 screws
- Mounting Holes Positions in mm from the lower left corner of the board:
- 5.08, 20.32
- 5.08, 40.64
- 5.08, 58.42
- 5.08, 78.74
- 52.07, 7.62
- 52.07, 78.74
Software
- Use whatever can control IO pins
- I use Tasmota-Firmware with the following IO-settings:
- Modul type: 18 Generic
- D3 GPIO0: 15 Switch7
- D4 GPIO2: 16 Switch8
- D2 GPIO4: 14 Switch6
- D1 GPIO5: 13 Switch5
- D6 GPIO12: 22 Relay2
- D7 GPIO13: 21 Relay1
- D5 GPIO14: 23 Relay3
- D0 GPIO16: 24 Relay4
- otherwise: 00 None
Parts
24| Qty | Value | Footprint | References |
|---|---|---|---|
| 6 | MountingHole | MountingHole:MountingHole_3.2mm_M3 | MH1, MH2, MH3, MH4, MH5, MH6 |
| 4 | LED | LED_THT:LED_D3.0mm | D1, D2, D3, D4 |
| 4 | R | Resistor_SMD:R_0805_2012Metric_Pad1.15x1.40mm_HandSolder | R3, R4, R5, R6 |
| 4 | SW_Push | Button_Switch_Keyboard:SW_Cherry_MX1A_1.00u_PCB | SW1, SW2, SW3, SW4 |
| 2 | 10k | Resistor_SMD:R_0805_2012Metric_Pad1.15x1.40mm_HandSolder | R1, R2 |
| 1 | logo:RZL-Logo | ||
| 1 | 4.7k | Resistor_SMD:R_0805_2012Metric_Pad1.15x1.40mm_HandSolder | R7 |
| 1 | DS18B20 | Package_TO_SOT_THT:TO-92_Inline | U2 |
| 1 | WeMos_mini | wemos_d1_mini:D1_mini_board | U1 |
Questions
How big is the ESP Cerry PCB?
It measures 59.7 × 85.1 mm and has 2 copper layers, 1.6 mm thick.
What parts does the ESP Cerry use?
24 parts, built around the DS18B20. 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 ESP Cerry KiCad files?
From the Ranlvor/ESP-Cherry repository on GitHub, at the commit this page was made from: the board is ESP-Cerry/ESP-Cerry.kicad_pcb. PCBKit opens the board in the browser, with nothing to install.
Can I use the ESP Cerry design in my own project?
Its repository states no licence, so its author keeps all rights: ask Ranlvor before reusing the design.
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