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...
This a PCA9665 I2C controller board for the MSKZIO-bus.
In the schematic I use a DS1678+ RTC device, but actually I would encourage to use the DS1307 RTC device - its compatible and the clock is working, even when power is turned off
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...
- 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
Multifunction USB to JTAG / UART / FIFO / SPI / I2C tool
Plugging a CJMCU FT232H board onto the Shukran creates an easy-to-use multi-function bus / device hacking and analysis tool with protected (current limited) 5V power pins, 3.3V power, spare pullup resistors and indicator LEDs, all for around $16/£12 total. The Shukran is designed to be assembled by anyone with moderate soldering skills; all...