2 layers
Vhf uhf IQ Modulator
antonjan/IQ_Modulator
IQ Modulator for 2M and 70cm from I2C and ALSA PCM Audio on Orange PI Zero (Estimated TX Power 500mW)
88 parts7GPL-3.0
2 layers65.5 × 57.2 mm
Espclock3
victor-chew/espclock33Internet-enabled Analog Clock using ESP8266 and ATtiny85
- Size
- 65.5 × 57.2 mm
- Copper layers
- 2
- Thickness
- 1.6 mm
- Parts
- 26
- Nets
- 17
- Pads
- 77
- Tracks, vias
- 220, 0
- Routed
- Yes
- KiCad
- KiCad 5 (file 20171130)
- Created
- 23 May 2020
- Updated
- 19 Dec 2021
Overview
Espclock3 is an open-source printed circuit board by victor-chew, from the victor-chew/espclock3 repository on GitHub, published under the Apache-2.0 licence. It is a 2-layer board of 65.5 × 57.2 mm with 26 parts on 17 nets, routed with 220 tracks and 0 vias.
It is built around the ATTINY85-20PU, BAT85 and HT7833, with the PCF8563 among its other parts. Its parts include 9 resistors, 5 diodes, 4 capacitors, 3 connectors and 1 IC. It belongs with the lEDs and displays boards and the AVR (ATmega, ATtiny) boards of this library.
Main components
4
ATTINY85-20PU
PDIP-8-40℃~+85℃ 10bit 2.7V~5.5V 20MHz 512Byte 512Byte 6 8 Bit 8KB AVR Built-in FLASH PDIP-8 Microcontrollers (MCU/MPU/SOC) ROHSMicrochip TechnologyMicrocontrollers (MCU/MPU/SOC)
BAT85
DO-341 Independent 200mA 2uA@25V 30V 5A 800mV@100mA DO-34 Schottky Diodes ROHSNexperiaSchottky Diodes
HT7833
SOT-23-5-40℃~+85℃@(Ta) 1 3.3V 500mA 500mV@(500mA) 7uA 8V Fixed Over Current Protection、Over Temperature Protection Positive SOT-89-3 Voltage Regulators - Linear, Low Drop Out (LDO) Regulators ROHSHOLTEKVoltage Regulators - Linear, Low Drop Out (LDO) Regulators
PCF8563
SOP-8-20℃~+85℃ 0.25uA 1.8V~5.5V I2C Programmable clock output、Alarm function、Countdown timer Yes SOP-8 Real Time Clocks ROHSIDCHIPReal Time Clocks
README
README.mdESPCLOCK3
Internet-enabled Analog Clock using ESP8266 and ATtiny85
Description
This is version 3 of my ESPClock project.
The clock gets accurate time information from the Internet and makes sure the physical clock time is up-to-date. It also automatically detects your current timezone via browser geolocation and deals with daylight saving adjustments with no user intervention.
V1 uses the ESP-12E development board to drive a cheap $2 Ikea analog clock.
V2 uses the WeMOS D1 Mini and ATtiny85 to reduce power draw. That design yields a runtime of ~1 month.
V3 uses the ESP-07, ATtiny85 and PCF8563 RTC to reduce the power draw even further. This design yields at least 4 months of runtime on a set of readily-available 4 x 1.2V AA NiMH rechargables.
Links:
Parts
26| Qty | Value | Footprint | References |
|---|---|---|---|
| 4 | 10K | Resistor_THT:R_Axial_DIN0309_L9.0mm_D3.2mm_P12.70mm_Horizontal | R1, R4, R7, R9 |
| 4 | 1N4148 | Diode_THT:D_DO-35_SOD27_P7.62mm_Horizontal | D2, D3, D4, D5 |
| 3 | 4.7K | Resistor_THT:R_Axial_DIN0309_L9.0mm_D3.2mm_P12.70mm_Horizontal | R3, R5, R6 |
| 2 | Conn_01x08_Female | Connector_PinHeader_2.54mm:PinHeader_1x08_P2.54mm_Vertical | ESP07-GND1, ESP07-VCC1 |
| 1 | 0.47F | Capacitor_THT:CP_Radial_D8.0mm_P5.00mm | C4 |
| 1 | 10uF | Capacitor_THT:C_Disc_D3.0mm_W2.0mm_P2.50mm | C3 |
| 1 | 1uF | Capacitor_THT:C_Disc_D3.0mm_W2.0mm_P2.50mm | C1 |
| 1 | 2.2uF | Capacitor_THT:C_Disc_D3.0mm_W2.0mm_P2.50mm | C2 |
| 1 | 4.7k | Resistor_THT:R_Axial_DIN0309_L9.0mm_D3.2mm_P12.70mm_Horizontal | R2 |
| 1 | 47K | Resistor_THT:R_Axial_DIN0309_L9.0mm_D3.2mm_P12.70mm_Horizontal | R8 |
| 1 | ATtiny85-20PU | Package_DIP:DIP-8_W7.62mm | U3 |
| 1 | BAT85 | Diode_THT:D_DO-35_SOD27_P7.62mm_Horizontal | D1 |
| 1 | Battery | Connector_JST:JST_XH_B2B-XH-A_1x02_P2.50mm_Vertical | J2 |
| 1 | HT7833 | HT7333.pretty:ht7333-a | L1 |
| 1 | PCF8563 | Connector_PinHeader_2.54mm:PinHeader_1x06_P2.54mm_Vertical | J5 |
| 1 | Quartz Clock | Connector_JST:JST_XH_B2B-XH-A_1x02_P2.50mm_Vertical | J1 |
| 1 | SW_Push | Button_Switch_THT:SW_PUSH_6mm | SW1 |
Questions
How big is the Espclock3 PCB?
It measures 65.5 × 57.2 mm and has 2 copper layers, 1.6 mm thick.
What parts does the Espclock3 use?
26 parts, built around the ATTINY85-20PU, BAT85, HT7833 and PCF8563. 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 Espclock3 KiCad files?
From the victor-chew/espclock3 repository on GitHub, at the commit this page was made from: the board is kicad/espclock3.kicad_pcb. PCBKit opens the board in the browser, with nothing to install.
Can I use the Espclock3 design in my own project?
Its repository publishes it under the Apache-2.0 licence: you may reuse it on that licence's terms (keep the author's notice, and for a copyleft licence share your changes alike).
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