VMAC v1 specification overview:
- Full size quality two layer Raspberry Pi Hat board to HAT mechanical specification
- Suitable for Raspberry PI 2, 3 or Zero Models Raspberry Family
- Size 85mm x 56mm
- Weight: PCB with connectors 40g, PCB without connectors 20g
- Standard 40 pin Pi GPIO header
- All logic I/O levels are at 3v3
- Impedance Video 75 Ohms and Audio 600 Ohms (Line Level)
- Video input Clamp, Bias and Programmable Gain
- 7 x AV Inputs
- 6 x RCA Sockets – Component configurable for Video or Audio Inputs
- 1 x 3.5mm Jack Socket providing 1 x video and 2 x audio Inputs
- Used to loopback from Pi 2 or 3, 3.5mm Socket
- 4 x AV Outputs
- 4 x RCA Sockets – Component configurable for Video or Audio Outputs
- Pi Zero video connector Pin Header
- 4 x matrix logic control inputs
- Connected to GPIO on Pi GPIO header
- FET switched output
- Connected via GPIO on Pi GPIO header
- DC 6.5v to 27v input to 5v regulator
- To power Pi via Pi GPIO header. Recommend a small heatsink on the regulator if using for long periods.
- PiHat powered from Pi via Pi GPIO header 3v3
- DTMF decoder
- Logic outputs to GPIO on Pi GPIO header
- EEPROM
- Connected to E2 ID on Pi GPIO header
- UART TXD, RXD and RTS
- Connected to GPIO on Pi GPIO header
- Two PiHat boards can be stacked for increased A/V IO
- Require to unpopulate DTMF and E2 IC’s on 2nd board
- Change matrix i2c address via solder jumper
- Mounting holes
- Suitable for Raspberry PI 2, 3 or Zero risers
- Operating Temperature -40°C to 85°C