Larger 4 digit Serial 7 Segment display which has capability of communicating through SPI / I2C / serial TTL inputs. Smaller version is basic display board with 0.56" display and LEDs for colon and Apos. Larger board is based on same basic design but it adds ports for DS1307/DS3132 RTC boards, ESP8266-01 or 12E/F, DHT11/22 enviromental sensor, LDR light sensor and extra status LED's. Unused pins f...
This is my atmega8 (and ATmega328 compatible) development board.
As it has the uart connector, you can program it in the arduino ide, if you are into that. You just need to download the bootloader through isp programming.
(I personally prefer to do it the expert way)
I added some connectors according to what I usually use:
I2C (also pull ups)
SPI (with an extra pin for devices such as nrf24,...
Simple Z80 test design - single board with all the basics and a few luxuries.
**NOTE EasyEDA shows the most recent WIP for this project, which might be part way through me making changes. Before using the PCB layout please do get in touch (comment or message) so I can let you know if what you're seeing is stable! I create labelled versions of the project, but EasyEDA doesn't allow me to publish a...
Breakout board for the Electronic Assembly eDIP240-7 display for control via an I²C interface.
- I²C addresses can be set via a dip switch.
- I²C pull-up resistors integrated.
- With reset button to avoid annoying plugging in and unplugging.
Use pin headers (2x 1x20) to be able to detach the display from the board
This projects is a device controlled thru i2C, it has a set of instructions to control two leds, two buzzers and a combination of them.
The device uses an ATTiny85 and it connects to an RaspberryPi to send the commands.
The instruction for the device are:
- 0x00 --> Does nothing
- 0x01 --> All Buzzers ON, All LEDs OFF
- 0x10 --> Al Buzzers OFF, All LEDs ON
- 0x11 --> All Buzzers ON, All LEDs O...
I2C/Serial Bi-Directional device to safely connect 5V MCUs to 3.3v Modules
If you've ever tried to connect a 3.3V device to a 5V system, you know what a challenge it can be. This bi-directional logic level converter is a small device that safely steps down 5V signals to 3.3V AND steps up 3.3V to 5V at the same time.
* Standalone module, no external components required
* The level converter is v...
- 无序列表1-wire - Use the upper part of the circuite: U1 and U2.
- Do not solder in U3, R5, R6.
- Can also cut the board by yellow dotted line to make it smaller
- 无序列表UART(RxTx) - use the bottom part: U2 and U3.
1) do not solder in U1, R2, R3, D1, D2
2) short D1 contacts
- 无序列表I2C - use the entire circuite: U1, U2, U3